./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/theatreSquare.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/theatreSquare.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 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:24:35,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:24:35,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:24:35,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:24:35,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:24:35,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:24:35,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:24:35,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:24:35,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:24:35,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:24:35,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:24:35,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:24:35,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:24:35,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:24:35,194 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:24:35,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:24:35,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:24:35,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:24:35,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:24:35,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:24:35,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:24:35,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:24:35,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:24:35,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:24:35,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:24:35,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:24:35,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:24:35,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:24:35,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:24:35,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:24:35,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:24:35,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:24:35,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:24:35,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:24:35,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:24:35,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:24:35,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:24:35,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:24:35,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:24:35,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:24:35,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:24:35,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:24:35,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 [2024-11-18 13:24:35,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:24:35,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:24:35,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:24:35,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:24:35,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:24:35,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-11-18 13:24:36,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:24:36,858 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:24:36,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-11-18 13:24:36,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743f5e439/dddda76bbf2444b8ae52e900509c156c/FLAGf0bf207bb [2024-11-18 13:24:36,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743f5e439/dddda76bbf2444b8ae52e900509c156c [2024-11-18 13:24:36,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:24:36,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:24:36,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:24:36,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:24:36,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:24:36,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:24:36" (1/1) ... [2024-11-18 13:24:36,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38613b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:36, skipping insertion in model container [2024-11-18 13:24:36,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:24:36" (1/1) ... [2024-11-18 13:24:36,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:24:37,069 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/theatreSquare.c[370,383] [2024-11-18 13:24:37,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:24:37,105 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:24:37,115 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/theatreSquare.c[370,383] [2024-11-18 13:24:37,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:24:37,133 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:24:37,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37 WrapperNode [2024-11-18 13:24:37,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:24:37,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:24:37,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:24:37,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:24:37,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,161 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 103 [2024-11-18 13:24:37,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:24:37,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:24:37,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:24:37,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:24:37,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,189 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 13:24:37,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:24:37,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:24:37,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:24:37,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:24:37,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (1/1) ... [2024-11-18 13:24:37,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:24:37,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:37,234 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 13:24:37,236 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 13:24:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:24:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:24:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:24:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:24:37,327 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:24:37,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:24:37,455 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-18 13:24:37,455 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:24:37,466 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:24:37,466 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 13:24:37,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:24:37 BoogieIcfgContainer [2024-11-18 13:24:37,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:24:37,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:24:37,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:24:37,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:24:37,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:24:36" (1/3) ... [2024-11-18 13:24:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628cd7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:24:37, skipping insertion in model container [2024-11-18 13:24:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:24:37" (2/3) ... [2024-11-18 13:24:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628cd7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:24:37, skipping insertion in model container [2024-11-18 13:24:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:24:37" (3/3) ... [2024-11-18 13:24:37,475 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-11-18 13:24:37,490 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:24:37,490 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:24:37,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:24:37,542 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;@3f280dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:24:37,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:24:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 13:24:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-18 13:24:37,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:37,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-18 13:24:37,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:37,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 891969447, now seen corresponding path program 1 times [2024-11-18 13:24:37,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:37,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167525836] [2024-11-18 13:24:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:37,825 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 13:24:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:37,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167525836] [2024-11-18 13:24:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167525836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:24:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904974426] [2024-11-18 13:24:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:37,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:24:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:24:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:37,859 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 13:24:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:37,899 INFO L93 Difference]: Finished difference Result 44 states and 68 transitions. [2024-11-18 13:24:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:24:37,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-18 13:24:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:37,909 INFO L225 Difference]: With dead ends: 44 [2024-11-18 13:24:37,909 INFO L226 Difference]: Without dead ends: 19 [2024-11-18 13:24:37,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:37,916 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:37,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 65 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-18 13:24:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-18 13:24:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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 13:24:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-18 13:24:37,948 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 6 [2024-11-18 13:24:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:37,949 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-18 13:24:37,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 13:24:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-18 13:24:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:24:37,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:37,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:37,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:24:37,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:37,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 535820783, now seen corresponding path program 1 times [2024-11-18 13:24:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658565287] [2024-11-18 13:24:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,190 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 13:24:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658565287] [2024-11-18 13:24:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658565287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 13:24:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008862737] [2024-11-18 13:24:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:24:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:24:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:24:38,195 INFO L87 Difference]: Start difference. First operand 19 states and 24 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 13:24:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,344 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-18 13:24:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:24:38,344 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 18 [2024-11-18 13:24:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,345 INFO L225 Difference]: With dead ends: 36 [2024-11-18 13:24:38,345 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 13:24:38,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:24:38,346 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:38,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 123 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 13:24:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2024-11-18 13:24:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 13:24:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2024-11-18 13:24:38,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 18 [2024-11-18 13:24:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,352 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-11-18 13:24:38,352 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 13:24:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2024-11-18 13:24:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 13:24:38,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:24:38,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1031838486, now seen corresponding path program 1 times [2024-11-18 13:24:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101362807] [2024-11-18 13:24:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,426 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 13:24:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101362807] [2024-11-18 13:24:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101362807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:24:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662057475] [2024-11-18 13:24:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:24:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:24:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,429 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,445 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-11-18 13:24:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:24:38,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-18 13:24:38,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,446 INFO L225 Difference]: With dead ends: 41 [2024-11-18 13:24:38,446 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 13:24:38,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,447 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 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 13:24:38,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 13:24:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-18 13:24:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:24:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-11-18 13:24:38,454 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 19 [2024-11-18 13:24:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,455 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-11-18 13:24:38,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-11-18 13:24:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 13:24:38,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:24:38,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1782670069, now seen corresponding path program 1 times [2024-11-18 13:24:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503182267] [2024-11-18 13:24:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,513 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 13:24:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503182267] [2024-11-18 13:24:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503182267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:24:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320609647] [2024-11-18 13:24:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:24:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:24:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,515 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,530 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-11-18 13:24:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:24:38,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-18 13:24:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,532 INFO L225 Difference]: With dead ends: 52 [2024-11-18 13:24:38,533 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:24:38,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,534 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 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 13:24:38,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:24:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-18 13:24:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 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 13:24:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2024-11-18 13:24:38,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 19 [2024-11-18 13:24:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,542 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2024-11-18 13:24:38,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2024-11-18 13:24:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:24:38,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 13:24:38,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1545632287, now seen corresponding path program 1 times [2024-11-18 13:24:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436714253] [2024-11-18 13:24:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:38,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436714253] [2024-11-18 13:24:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436714253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:24:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246447028] [2024-11-18 13:24:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:24:38,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:24:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:24:38,588 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,601 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-18 13:24:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:24:38,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 13:24:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,603 INFO L225 Difference]: With dead ends: 49 [2024-11-18 13:24:38,603 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 13:24:38,604 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 13:24:38,604 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:38,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 13:24:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-18 13:24:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 13:24:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-18 13:24:38,613 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 20 [2024-11-18 13:24:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,613 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-18 13:24:38,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-18 13:24:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:24:38,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 13:24:38,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1312537087, now seen corresponding path program 1 times [2024-11-18 13:24:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498557147] [2024-11-18 13:24:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498557147] [2024-11-18 13:24:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498557147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:24:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136947769] [2024-11-18 13:24:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:24:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:24:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:24:38,666 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,680 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2024-11-18 13:24:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:24:38,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 13:24:38,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,683 INFO L225 Difference]: With dead ends: 59 [2024-11-18 13:24:38,683 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 13:24:38,683 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 13:24:38,684 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:38,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 13:24:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 13:24:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-18 13:24:38,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2024-11-18 13:24:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,694 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-18 13:24:38,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-18 13:24:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:24:38,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 13:24:38,695 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1130312570, now seen corresponding path program 1 times [2024-11-18 13:24:38,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456432327] [2024-11-18 13:24:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:24:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456432327] [2024-11-18 13:24:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456432327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:24:38,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411280972] [2024-11-18 13:24:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:24:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:24:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,750 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 13:24:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,764 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-18 13:24:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:24:38,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2024-11-18 13:24:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,765 INFO L225 Difference]: With dead ends: 39 [2024-11-18 13:24:38,765 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 13:24:38,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:38,766 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:38,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 13:24:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 13:24:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-11-18 13:24:38,771 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 21 [2024-11-18 13:24:38,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,772 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-18 13:24:38,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 13:24:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-11-18 13:24:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:24:38,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 13:24:38,773 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1437483694, now seen corresponding path program 1 times [2024-11-18 13:24:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304890854] [2024-11-18 13:24:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:24:38,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304890854] [2024-11-18 13:24:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304890854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23275422] [2024-11-18 13:24:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:38,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:38,817 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 13:24:38,819 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 13:24:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:38,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:24:38,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:24:38,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:24:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23275422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:24:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-18 13:24:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202051477] [2024-11-18 13:24:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:38,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:24:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:24:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:24:38,957 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 13:24:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:38,971 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-11-18 13:24:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:24:38,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 22 [2024-11-18 13:24:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:38,974 INFO L225 Difference]: With dead ends: 37 [2024-11-18 13:24:38,974 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 13:24:38,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:24:38,975 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:38,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 39 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 13:24:38,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 13:24:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-18 13:24:38,982 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 22 [2024-11-18 13:24:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:38,983 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-18 13:24:38,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 13:24:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-18 13:24:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:24:38,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:38,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:38,997 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 13:24:39,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:39,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:39,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1965889039, now seen corresponding path program 1 times [2024-11-18 13:24:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427728281] [2024-11-18 13:24:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427728281] [2024-11-18 13:24:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427728281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:24:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:24:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541303570] [2024-11-18 13:24:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:39,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:24:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:24:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:39,237 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 13:24:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:39,248 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-11-18 13:24:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:24:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 22 [2024-11-18 13:24:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:39,249 INFO L225 Difference]: With dead ends: 32 [2024-11-18 13:24:39,251 INFO L226 Difference]: Without dead ends: 24 [2024-11-18 13:24:39,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:24:39,252 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:39,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-18 13:24:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-18 13:24:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 13:24:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-18 13:24:39,256 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 22 [2024-11-18 13:24:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:39,256 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-18 13:24:39,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 13:24:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-18 13:24:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 13:24:39,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:39,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:39,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 13:24:39,257 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:39,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1829813877, now seen corresponding path program 1 times [2024-11-18 13:24:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912804607] [2024-11-18 13:24:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:39,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:39,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912804607] [2024-11-18 13:24:39,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912804607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:39,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603549660] [2024-11-18 13:24:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:39,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:39,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:39,305 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 13:24:39,307 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 13:24:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:39,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:24:39,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:39,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:24:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603549660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:24:39,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:24:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-18 13:24:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981587303] [2024-11-18 13:24:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:24:39,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:24:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:24:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:24:39,381 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 13:24:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:39,392 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-18 13:24:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:24:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) Word has length 23 [2024-11-18 13:24:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:39,393 INFO L225 Difference]: With dead ends: 31 [2024-11-18 13:24:39,393 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 13:24:39,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:24:39,394 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:39,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 13:24:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 13:24:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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 13:24:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 13:24:39,397 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-18 13:24:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:39,397 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 13:24:39,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 13:24:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 13:24:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:24:39,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:39,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:39,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:24:39,598 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,SelfDestructingSolverStorable9 [2024-11-18 13:24:39,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:39,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1804048560, now seen corresponding path program 1 times [2024-11-18 13:24:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261679064] [2024-11-18 13:24:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261679064] [2024-11-18 13:24:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261679064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488582625] [2024-11-18 13:24:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:24:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:39,768 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 13:24:39,770 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 13:24:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:39,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 13:24:39,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:39,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488582625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:40,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:40,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-18 13:24:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295450045] [2024-11-18 13:24:40,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:40,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 13:24:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 13:24:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:24:40,079 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 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 13:24:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:40,266 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-11-18 13:24:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:24:40,267 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 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 24 [2024-11-18 13:24:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:40,267 INFO L225 Difference]: With dead ends: 50 [2024-11-18 13:24:40,267 INFO L226 Difference]: Without dead ends: 44 [2024-11-18 13:24:40,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:24:40,268 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:40,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 232 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-18 13:24:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-11-18 13:24:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 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 13:24:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-18 13:24:40,274 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 24 [2024-11-18 13:24:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:40,275 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-18 13:24:40,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 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 13:24:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-18 13:24:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:24:40,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:40,275 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:40,292 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 13:24:40,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:40,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:40,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash 571706934, now seen corresponding path program 2 times [2024-11-18 13:24:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713631534] [2024-11-18 13:24:40,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:40,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:40,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:40,591 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 13:24:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713631534] [2024-11-18 13:24:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713631534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053022404] [2024-11-18 13:24:40,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:40,593 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 13:24:40,594 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 13:24:40,646 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:40,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:40,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:24:40,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:40,725 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 13:24:40,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:40,796 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 13:24:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053022404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:40,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 13:24:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675620316] [2024-11-18 13:24:40,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:40,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:24:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:24:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:24:40,798 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:40,858 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2024-11-18 13:24:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:24:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-18 13:24:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:40,859 INFO L225 Difference]: With dead ends: 54 [2024-11-18 13:24:40,859 INFO L226 Difference]: Without dead ends: 44 [2024-11-18 13:24:40,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:24:40,861 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:40,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-18 13:24:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-18 13:24:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:24:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-18 13:24:40,869 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 25 [2024-11-18 13:24:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:40,869 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-18 13:24:40,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-18 13:24:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:24:40,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:40,870 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:40,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:24:41,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:41,072 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:41,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1510332885, now seen corresponding path program 3 times [2024-11-18 13:24:41,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:41,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910553324] [2024-11-18 13:24:41,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:41,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:41,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:24:41,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:41,128 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 13:24:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910553324] [2024-11-18 13:24:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910553324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165796645] [2024-11-18 13:24:41,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:41,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:41,130 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 13:24:41,135 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 13:24:41,195 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:24:41,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:41,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:24:41,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:41,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:41,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165796645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:41,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:41,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 13:24:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097780468] [2024-11-18 13:24:41,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:41,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:24:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:24:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:24:41,261 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 13:24:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:41,280 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-11-18 13:24:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:24:41,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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) Word has length 25 [2024-11-18 13:24:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:41,281 INFO L225 Difference]: With dead ends: 66 [2024-11-18 13:24:41,281 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 13:24:41,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:24:41,281 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:41,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 13:24:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-18 13:24:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 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 13:24:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-18 13:24:41,295 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 25 [2024-11-18 13:24:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:41,296 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-18 13:24:41,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 13:24:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-18 13:24:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:24:41,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:41,297 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:41,309 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 13:24:41,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 13:24:41,498 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:41,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 595735960, now seen corresponding path program 4 times [2024-11-18 13:24:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:41,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556275514] [2024-11-18 13:24:41,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:41,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:41,506 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:41,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556275514] [2024-11-18 13:24:41,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556275514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419506326] [2024-11-18 13:24:41,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:41,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:41,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:41,545 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 13:24:41,549 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 13:24:41,622 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:41,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:41,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:24:41,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:41,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419506326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:41,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-18 13:24:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373722363] [2024-11-18 13:24:41,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:41,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:24:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:24:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:24:41,673 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:41,694 INFO L93 Difference]: Finished difference Result 96 states and 122 transitions. [2024-11-18 13:24:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:24:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-18 13:24:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:41,695 INFO L225 Difference]: With dead ends: 96 [2024-11-18 13:24:41,695 INFO L226 Difference]: Without dead ends: 64 [2024-11-18 13:24:41,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:24:41,696 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:41,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:41,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-18 13:24:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-18 13:24:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:24:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-11-18 13:24:41,708 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 25 [2024-11-18 13:24:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:41,709 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-11-18 13:24:41,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-11-18 13:24:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:24:41,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:41,709 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:41,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:41,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:41,911 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:41,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1299373655, now seen corresponding path program 5 times [2024-11-18 13:24:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:41,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711440265] [2024-11-18 13:24:41,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:41,922 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:41,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:41,979 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 13:24:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711440265] [2024-11-18 13:24:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711440265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123243461] [2024-11-18 13:24:41,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:41,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:41,981 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 13:24:41,982 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 13:24:42,026 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:42,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:42,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:24:42,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:42,088 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 13:24:42,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:42,151 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 13:24:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123243461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:42,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:42,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-18 13:24:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078991489] [2024-11-18 13:24:42,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:42,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:24:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:24:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:24:42,154 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:42,203 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-18 13:24:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:24:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-18 13:24:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:42,204 INFO L225 Difference]: With dead ends: 78 [2024-11-18 13:24:42,204 INFO L226 Difference]: Without dead ends: 66 [2024-11-18 13:24:42,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:24:42,205 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:42,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-18 13:24:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-18 13:24:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:24:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2024-11-18 13:24:42,212 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 25 [2024-11-18 13:24:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:42,212 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2024-11-18 13:24:42,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2024-11-18 13:24:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:24:42,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:42,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:42,225 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 13:24:42,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:42,413 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:42,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:42,414 INFO L85 PathProgramCache]: Analyzing trace with hash -120572194, now seen corresponding path program 6 times [2024-11-18 13:24:42,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:42,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326020008] [2024-11-18 13:24:42,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:42,422 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-18 13:24:42,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:24:42,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326020008] [2024-11-18 13:24:42,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326020008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190128359] [2024-11-18 13:24:42,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:42,534 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 13:24:42,535 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 13:24:42,582 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-18 13:24:42,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:42,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:24:42,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:42,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190128359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:42,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-18 13:24:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841736743] [2024-11-18 13:24:42,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:42,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:24:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:24:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:24:42,714 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 13:24:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:42,776 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2024-11-18 13:24:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:24:42,776 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 13:24:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:42,777 INFO L225 Difference]: With dead ends: 92 [2024-11-18 13:24:42,777 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 13:24:42,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:24:42,777 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:42,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 13:24:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-18 13:24:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:24:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2024-11-18 13:24:42,790 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 26 [2024-11-18 13:24:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:42,790 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2024-11-18 13:24:42,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 13:24:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2024-11-18 13:24:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:24:42,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:42,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:42,803 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 13:24:42,991 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,SelfDestructingSolverStorable15 [2024-11-18 13:24:42,992 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:42,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2006452209, now seen corresponding path program 7 times [2024-11-18 13:24:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:42,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928929759] [2024-11-18 13:24:42,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:43,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928929759] [2024-11-18 13:24:43,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928929759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:43,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615856103] [2024-11-18 13:24:43,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:43,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:43,175 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 13:24:43,176 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 13:24:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:43,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 13:24:43,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:43,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615856103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:43,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2024-11-18 13:24:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904055848] [2024-11-18 13:24:43,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:43,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 13:24:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 13:24:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:24:43,487 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:43,707 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2024-11-18 13:24:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:24:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 13:24:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:43,708 INFO L225 Difference]: With dead ends: 108 [2024-11-18 13:24:43,708 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 13:24:43,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:24:43,709 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 48 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:43,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 329 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 13:24:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2024-11-18 13:24:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2024-11-18 13:24:43,716 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 26 [2024-11-18 13:24:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:43,716 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2024-11-18 13:24:43,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2024-11-18 13:24:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:24:43,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:43,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:43,730 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 13:24:43,917 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,SelfDestructingSolverStorable16 [2024-11-18 13:24:43,918 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:43,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -216163038, now seen corresponding path program 8 times [2024-11-18 13:24:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116818307] [2024-11-18 13:24:43,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:43,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:43,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:24:44,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:44,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116818307] [2024-11-18 13:24:44,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116818307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:44,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769265441] [2024-11-18 13:24:44,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:44,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:44,033 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 13:24:44,035 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 13:24:44,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:44,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:44,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:24:44,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:44,144 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 13:24:44,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:44,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769265441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:44,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:44,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-18 13:24:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181982147] [2024-11-18 13:24:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:44,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:24:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:24:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:24:44,216 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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 13:24:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:44,278 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2024-11-18 13:24:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:24:44,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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 26 [2024-11-18 13:24:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:44,279 INFO L225 Difference]: With dead ends: 101 [2024-11-18 13:24:44,279 INFO L226 Difference]: Without dead ends: 86 [2024-11-18 13:24:44,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:24:44,280 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:44,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-18 13:24:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-18 13:24:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.223529411764706) internal successors, (104), 85 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-18 13:24:44,295 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 26 [2024-11-18 13:24:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:44,295 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-18 13:24:44,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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 13:24:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-18 13:24:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:24:44,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:44,296 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:44,309 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 13:24:44,500 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,SelfDestructingSolverStorable17 [2024-11-18 13:24:44,501 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:44,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1407838889, now seen corresponding path program 9 times [2024-11-18 13:24:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34764818] [2024-11-18 13:24:44,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:44,513 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:24:44,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:44,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:44,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34764818] [2024-11-18 13:24:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34764818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:44,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247031398] [2024-11-18 13:24:44,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:44,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:44,626 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 13:24:44,627 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 13:24:44,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:24:44,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:44,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:24:44,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:44,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247031398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:44,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:44,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-18 13:24:44,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072936219] [2024-11-18 13:24:44,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:44,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 13:24:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:44,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 13:24:44,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:24:44,904 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:24:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:45,031 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2024-11-18 13:24:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:24:45,032 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:24:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:45,032 INFO L225 Difference]: With dead ends: 111 [2024-11-18 13:24:45,032 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 13:24:45,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:24:45,033 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:45,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 180 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 13:24:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-11-18 13:24:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2317073170731707) internal successors, (101), 82 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-18 13:24:45,042 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 27 [2024-11-18 13:24:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:45,042 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-18 13:24:45,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:24:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-18 13:24:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:24:45,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:45,042 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:45,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 13:24:45,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:45,243 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash -325007018, now seen corresponding path program 10 times [2024-11-18 13:24:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049295056] [2024-11-18 13:24:45,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:45,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:45,253 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:45,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049295056] [2024-11-18 13:24:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049295056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479520108] [2024-11-18 13:24:45,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:45,336 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 13:24:45,337 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 13:24:45,395 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:45,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:45,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:24:45,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:45,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:45,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479520108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:45,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-18 13:24:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926351548] [2024-11-18 13:24:45,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:45,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:24:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:24:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:24:45,656 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:45,776 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2024-11-18 13:24:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:24:45,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-18 13:24:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:45,777 INFO L225 Difference]: With dead ends: 97 [2024-11-18 13:24:45,777 INFO L226 Difference]: Without dead ends: 85 [2024-11-18 13:24:45,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:24:45,778 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:45,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-18 13:24:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-18 13:24:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 84 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2024-11-18 13:24:45,786 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 27 [2024-11-18 13:24:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:45,786 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2024-11-18 13:24:45,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2024-11-18 13:24:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:24:45,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:45,787 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:45,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 13:24:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:45,988 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:45,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 480362644, now seen corresponding path program 11 times [2024-11-18 13:24:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437287907] [2024-11-18 13:24:45,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:45,995 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:45,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437287907] [2024-11-18 13:24:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437287907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491012745] [2024-11-18 13:24:46,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:46,029 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 13:24:46,030 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 13:24:46,078 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:46,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:46,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 13:24:46,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491012745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:46,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-18 13:24:46,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738089155] [2024-11-18 13:24:46,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:46,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:24:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:46,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:24:46,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:24:46,131 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:46,160 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2024-11-18 13:24:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:24:46,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-18 13:24:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:46,161 INFO L225 Difference]: With dead ends: 104 [2024-11-18 13:24:46,161 INFO L226 Difference]: Without dead ends: 71 [2024-11-18 13:24:46,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:24:46,161 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:46,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 62 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-18 13:24:46,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-18 13:24:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:24:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-18 13:24:46,170 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 27 [2024-11-18 13:24:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:46,170 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-18 13:24:46,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-18 13:24:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:24:46,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:46,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:46,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 13:24:46,371 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,SelfDestructingSolverStorable20 [2024-11-18 13:24:46,371 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:46,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash 400247189, now seen corresponding path program 12 times [2024-11-18 13:24:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:46,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675977784] [2024-11-18 13:24:46,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:46,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:46,383 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-18 13:24:46,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:46,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675977784] [2024-11-18 13:24:46,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675977784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:46,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738796930] [2024-11-18 13:24:46,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:46,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:46,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:46,428 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 13:24:46,429 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 13:24:46,477 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-18 13:24:46,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:46,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 13:24:46,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738796930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:46,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 13:24:46,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75960487] [2024-11-18 13:24:46,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:46,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:24:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:24:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:24:46,535 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 13:24:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:46,565 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2024-11-18 13:24:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:24:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) Word has length 27 [2024-11-18 13:24:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:46,566 INFO L225 Difference]: With dead ends: 78 [2024-11-18 13:24:46,566 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 13:24:46,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:24:46,567 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:46,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 98 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 13:24:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 13:24:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 71 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 13:24:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2024-11-18 13:24:46,575 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 27 [2024-11-18 13:24:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:46,576 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2024-11-18 13:24:46,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 13:24:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2024-11-18 13:24:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:24:46,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:46,576 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:46,597 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 13:24:46,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:46,781 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:46,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -822645520, now seen corresponding path program 13 times [2024-11-18 13:24:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915108912] [2024-11-18 13:24:46,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915108912] [2024-11-18 13:24:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915108912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523634836] [2024-11-18 13:24:46,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:46,998 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 13:24:47,000 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 13:24:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:47,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 13:24:47,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:47,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:47,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523634836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:47,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2024-11-18 13:24:47,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401026823] [2024-11-18 13:24:47,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:47,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 13:24:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 13:24:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2024-11-18 13:24:47,283 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:24:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:47,509 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-11-18 13:24:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:24:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:24:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:47,510 INFO L225 Difference]: With dead ends: 100 [2024-11-18 13:24:47,510 INFO L226 Difference]: Without dead ends: 91 [2024-11-18 13:24:47,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:24:47,511 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:47,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 440 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-18 13:24:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2024-11-18 13:24:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:24:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-18 13:24:47,519 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 28 [2024-11-18 13:24:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:47,519 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-18 13:24:47,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:24:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-18 13:24:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:24:47,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:47,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:47,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:47,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:47,723 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:47,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1124024368, now seen corresponding path program 14 times [2024-11-18 13:24:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684273008] [2024-11-18 13:24:47,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:47,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:47,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:47,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684273008] [2024-11-18 13:24:47,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684273008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:47,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871925297] [2024-11-18 13:24:47,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:47,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:47,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:47,938 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 13:24:47,939 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 13:24:47,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:47,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:47,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 13:24:47,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:48,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871925297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:48,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:48,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-11-18 13:24:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989931494] [2024-11-18 13:24:48,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:48,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:24:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:24:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:24:48,224 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:48,407 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2024-11-18 13:24:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:24:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-18 13:24:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:48,408 INFO L225 Difference]: With dead ends: 102 [2024-11-18 13:24:48,408 INFO L226 Difference]: Without dead ends: 96 [2024-11-18 13:24:48,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:24:48,409 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:48,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 343 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-18 13:24:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2024-11-18 13:24:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.2) internal successors, (108), 90 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2024-11-18 13:24:48,417 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 28 [2024-11-18 13:24:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:48,417 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2024-11-18 13:24:48,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2024-11-18 13:24:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:24:48,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:48,418 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:48,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 13:24:48,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 13:24:48,622 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:48,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash 930430102, now seen corresponding path program 15 times [2024-11-18 13:24:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:48,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095878951] [2024-11-18 13:24:48,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:48,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:24:48,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:48,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095878951] [2024-11-18 13:24:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095878951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920187910] [2024-11-18 13:24:48,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:48,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:48,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:48,758 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 13:24:48,758 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 13:24:48,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:24:48,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:48,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:24:48,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:48,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920187910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:49,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-18 13:24:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100686478] [2024-11-18 13:24:49,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:49,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 13:24:49,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 13:24:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:24:49,135 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:24:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:49,289 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2024-11-18 13:24:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:24:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:24:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:49,291 INFO L225 Difference]: With dead ends: 125 [2024-11-18 13:24:49,291 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 13:24:49,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:24:49,292 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:49,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 268 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 13:24:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-18 13:24:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 93 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 13:24:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2024-11-18 13:24:49,302 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 29 [2024-11-18 13:24:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:49,302 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2024-11-18 13:24:49,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:24:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2024-11-18 13:24:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:24:49,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:49,303 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:49,316 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 13:24:49,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:49,507 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:49,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 138479735, now seen corresponding path program 16 times [2024-11-18 13:24:49,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:49,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381532341] [2024-11-18 13:24:49,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:49,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:49,516 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:49,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381532341] [2024-11-18 13:24:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381532341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451538245] [2024-11-18 13:24:49,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:49,629 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 13:24:49,630 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 13:24:49,681 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:49,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:49,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:24:49,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:49,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451538245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:49,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-18 13:24:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793004832] [2024-11-18 13:24:49,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:49,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 13:24:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 13:24:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:24:49,976 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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 13:24:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:50,159 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2024-11-18 13:24:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:24:50,160 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) Word has length 29 [2024-11-18 13:24:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:50,160 INFO L225 Difference]: With dead ends: 109 [2024-11-18 13:24:50,160 INFO L226 Difference]: Without dead ends: 96 [2024-11-18 13:24:50,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:24:50,161 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:50,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-18 13:24:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-18 13:24:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 95 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 13:24:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2024-11-18 13:24:50,172 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 29 [2024-11-18 13:24:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:50,172 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2024-11-18 13:24:50,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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 13:24:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2024-11-18 13:24:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:24:50,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:50,173 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:50,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:50,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:50,373 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:50,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2086280437, now seen corresponding path program 17 times [2024-11-18 13:24:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603914145] [2024-11-18 13:24:50,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:50,380 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:24:50,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603914145] [2024-11-18 13:24:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603914145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100910723] [2024-11-18 13:24:50,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:50,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:50,428 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 13:24:50,429 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 13:24:50,481 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:24:50,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:50,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:24:50,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:50,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100910723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:50,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:50,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-11-18 13:24:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441889227] [2024-11-18 13:24:50,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:50,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:24:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:24:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:24:50,570 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 13:24:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:50,619 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2024-11-18 13:24:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:24:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 29 [2024-11-18 13:24:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:50,620 INFO L225 Difference]: With dead ends: 127 [2024-11-18 13:24:50,620 INFO L226 Difference]: Without dead ends: 114 [2024-11-18 13:24:50,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:24:50,621 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:50,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 141 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-18 13:24:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2024-11-18 13:24:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 111 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 13:24:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2024-11-18 13:24:50,638 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 29 [2024-11-18 13:24:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:50,638 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2024-11-18 13:24:50,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 13:24:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2024-11-18 13:24:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:24:50,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:50,639 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:50,651 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 13:24:50,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:50,839 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:50,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:50,840 INFO L85 PathProgramCache]: Analyzing trace with hash -397298668, now seen corresponding path program 18 times [2024-11-18 13:24:50,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:50,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72409611] [2024-11-18 13:24:50,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:50,847 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:24:50,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72409611] [2024-11-18 13:24:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72409611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799684866] [2024-11-18 13:24:50,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:50,905 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 13:24:50,906 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 13:24:50,961 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:24:50,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:50,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:24:50,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:51,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:24:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799684866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:51,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-18 13:24:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873219410] [2024-11-18 13:24:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:51,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:24:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:51,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:24:51,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:24:51,030 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 13:24:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:51,087 INFO L93 Difference]: Finished difference Result 194 states and 241 transitions. [2024-11-18 13:24:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:24:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 29 [2024-11-18 13:24:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:51,088 INFO L225 Difference]: With dead ends: 194 [2024-11-18 13:24:51,088 INFO L226 Difference]: Without dead ends: 134 [2024-11-18 13:24:51,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:24:51,089 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:51,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-18 13:24:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-18 13:24:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2255639097744362) internal successors, (163), 133 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2024-11-18 13:24:51,105 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 29 [2024-11-18 13:24:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:51,105 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2024-11-18 13:24:51,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 13:24:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2024-11-18 13:24:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:24:51,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:51,105 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:51,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:51,305 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,SelfDestructingSolverStorable27 [2024-11-18 13:24:51,306 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:51,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 660541935, now seen corresponding path program 19 times [2024-11-18 13:24:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247996513] [2024-11-18 13:24:51,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247996513] [2024-11-18 13:24:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247996513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248996358] [2024-11-18 13:24:51,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:51,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:51,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:51,516 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 13:24:51,517 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 13:24:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:51,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 13:24:51,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:51,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:51,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248996358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:51,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:51,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-11-18 13:24:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852438730] [2024-11-18 13:24:51,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:51,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 13:24:51,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 13:24:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2024-11-18 13:24:51,835 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:52,159 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2024-11-18 13:24:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:24:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-18 13:24:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:52,160 INFO L225 Difference]: With dead ends: 168 [2024-11-18 13:24:52,160 INFO L226 Difference]: Without dead ends: 159 [2024-11-18 13:24:52,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:24:52,161 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 60 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:52,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 701 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:24:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-18 13:24:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2024-11-18 13:24:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.2183098591549295) internal successors, (173), 142 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 13:24:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2024-11-18 13:24:52,180 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 30 [2024-11-18 13:24:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:52,180 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2024-11-18 13:24:52,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2024-11-18 13:24:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:24:52,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:52,181 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:52,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:52,381 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,SelfDestructingSolverStorable28 [2024-11-18 13:24:52,382 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:52,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 283195298, now seen corresponding path program 20 times [2024-11-18 13:24:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:52,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813006698] [2024-11-18 13:24:52,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:52,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:52,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:24:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813006698] [2024-11-18 13:24:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813006698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795693055] [2024-11-18 13:24:52,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:52,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:52,548 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 13:24:52,549 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 13:24:52,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:52,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:52,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:24:52,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:24:52,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:24:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795693055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:52,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-18 13:24:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141597116] [2024-11-18 13:24:52,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:52,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 13:24:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 13:24:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:24:52,791 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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 13:24:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:52,898 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2024-11-18 13:24:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:24:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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 30 [2024-11-18 13:24:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:52,899 INFO L225 Difference]: With dead ends: 190 [2024-11-18 13:24:52,899 INFO L226 Difference]: Without dead ends: 154 [2024-11-18 13:24:52,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:24:52,900 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:52,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 176 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-18 13:24:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-18 13:24:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.196078431372549) internal successors, (183), 153 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 13:24:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2024-11-18 13:24:52,917 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 30 [2024-11-18 13:24:52,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:52,917 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2024-11-18 13:24:52,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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 13:24:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2024-11-18 13:24:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:24:52,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:52,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:52,930 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 13:24:53,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:53,118 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:53,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1226887537, now seen corresponding path program 21 times [2024-11-18 13:24:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590622142] [2024-11-18 13:24:53,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:53,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:24:53,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590622142] [2024-11-18 13:24:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590622142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21861445] [2024-11-18 13:24:53,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:53,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:53,364 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 13:24:53,365 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 13:24:53,415 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:24:53,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:53,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 13:24:53,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:53,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:53,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21861445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:53,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:53,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-18 13:24:53,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639711095] [2024-11-18 13:24:53,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:53,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 13:24:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 13:24:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:24:53,662 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 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 13:24:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:53,905 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2024-11-18 13:24:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:24:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 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) Word has length 30 [2024-11-18 13:24:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:53,907 INFO L225 Difference]: With dead ends: 184 [2024-11-18 13:24:53,907 INFO L226 Difference]: Without dead ends: 162 [2024-11-18 13:24:53,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 13:24:53,907 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:53,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 420 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-18 13:24:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2024-11-18 13:24:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 152 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 13:24:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2024-11-18 13:24:53,926 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 30 [2024-11-18 13:24:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:53,927 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2024-11-18 13:24:53,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 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 13:24:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2024-11-18 13:24:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:24:53,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:53,927 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:53,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 13:24:54,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:54,128 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:54,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash 628770462, now seen corresponding path program 22 times [2024-11-18 13:24:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788891861] [2024-11-18 13:24:54,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:54,135 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:54,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:24:54,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788891861] [2024-11-18 13:24:54,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788891861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167489187] [2024-11-18 13:24:54,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:54,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:54,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:54,211 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:54,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 13:24:54,270 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:54,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:54,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:24:54,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:24:54,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:24:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167489187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:54,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:54,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-18 13:24:54,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368505431] [2024-11-18 13:24:54,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:54,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:24:54,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:24:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:24:54,450 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:54,554 INFO L93 Difference]: Finished difference Result 172 states and 202 transitions. [2024-11-18 13:24:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:24:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-18 13:24:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:54,556 INFO L225 Difference]: With dead ends: 172 [2024-11-18 13:24:54,556 INFO L226 Difference]: Without dead ends: 153 [2024-11-18 13:24:54,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:24:54,556 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:54,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-18 13:24:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-18 13:24:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 152 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2024-11-18 13:24:54,585 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 30 [2024-11-18 13:24:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:54,585 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2024-11-18 13:24:54,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2024-11-18 13:24:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 13:24:54,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:54,586 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:54,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:54,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:54,787 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:54,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -335399049, now seen corresponding path program 23 times [2024-11-18 13:24:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536338588] [2024-11-18 13:24:54,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:54,795 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:24:54,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536338588] [2024-11-18 13:24:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536338588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301566626] [2024-11-18 13:24:54,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:24:54,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:54,918 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:54,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 13:24:54,979 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:24:54,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:54,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:24:54,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:55,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301566626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:55,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-18 13:24:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712333802] [2024-11-18 13:24:55,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:55,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 13:24:55,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 13:24:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:24:55,308 INFO L87 Difference]: Start difference. First operand 153 states and 179 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:55,514 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2024-11-18 13:24:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:24:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-18 13:24:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:55,515 INFO L225 Difference]: With dead ends: 213 [2024-11-18 13:24:55,515 INFO L226 Difference]: Without dead ends: 183 [2024-11-18 13:24:55,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:24:55,516 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:55,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 322 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-18 13:24:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2024-11-18 13:24:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.1796407185628743) internal successors, (197), 167 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 13:24:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 197 transitions. [2024-11-18 13:24:55,538 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 197 transitions. Word has length 31 [2024-11-18 13:24:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:55,538 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 197 transitions. [2024-11-18 13:24:55,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:24:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 197 transitions. [2024-11-18 13:24:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 13:24:55,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:55,539 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:55,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:55,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-18 13:24:55,739 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:55,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash 883943350, now seen corresponding path program 24 times [2024-11-18 13:24:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002654990] [2024-11-18 13:24:55,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:55,756 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:24:55,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002654990] [2024-11-18 13:24:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002654990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617709721] [2024-11-18 13:24:55,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:24:55,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:55,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 13:24:55,968 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:24:55,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:55,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:24:55,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:56,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:24:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617709721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:56,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:56,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-11-18 13:24:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694781509] [2024-11-18 13:24:56,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:56,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 13:24:56,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 13:24:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:24:56,350 INFO L87 Difference]: Start difference. First operand 168 states and 197 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 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 13:24:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:56,636 INFO L93 Difference]: Finished difference Result 186 states and 218 transitions. [2024-11-18 13:24:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:24:56,636 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 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 31 [2024-11-18 13:24:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:56,637 INFO L225 Difference]: With dead ends: 186 [2024-11-18 13:24:56,637 INFO L226 Difference]: Without dead ends: 171 [2024-11-18 13:24:56,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:24:56,638 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:56,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 326 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:24:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-18 13:24:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-18 13:24:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.1764705882352942) internal successors, (200), 170 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 13:24:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2024-11-18 13:24:56,662 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 31 [2024-11-18 13:24:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:56,662 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2024-11-18 13:24:56,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 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 13:24:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2024-11-18 13:24:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 13:24:56,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:56,662 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:56,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-18 13:24:56,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-18 13:24:56,863 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:56,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:56,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2026567256, now seen corresponding path program 25 times [2024-11-18 13:24:56,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:56,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867442908] [2024-11-18 13:24:56,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:56,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:56,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867442908] [2024-11-18 13:24:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867442908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131910004] [2024-11-18 13:24:56,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:24:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:56,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:56,922 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:56,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 13:24:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:24:56,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:24:56,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:57,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131910004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:57,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:57,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 13:24:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965897300] [2024-11-18 13:24:57,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:57,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:24:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:24:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:24:57,068 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 13:24:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:57,135 INFO L93 Difference]: Finished difference Result 213 states and 249 transitions. [2024-11-18 13:24:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:24:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 31 [2024-11-18 13:24:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:57,136 INFO L225 Difference]: With dead ends: 213 [2024-11-18 13:24:57,136 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 13:24:57,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:24:57,137 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:57,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 93 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 13:24:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-18 13:24:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 156 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 13:24:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-18 13:24:57,171 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 31 [2024-11-18 13:24:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:57,171 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-18 13:24:57,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 13:24:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-18 13:24:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 13:24:57,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:57,172 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:57,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:57,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-18 13:24:57,373 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:57,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1679203531, now seen corresponding path program 26 times [2024-11-18 13:24:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216246225] [2024-11-18 13:24:57,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:57,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:57,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216246225] [2024-11-18 13:24:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216246225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:57,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310109178] [2024-11-18 13:24:57,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:24:57,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:57,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:57,436 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:57,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 13:24:57,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:24:57,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:57,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:24:57,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:57,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:24:57,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310109178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:57,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:57,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 13:24:57,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742992824] [2024-11-18 13:24:57,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:57,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:24:57,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:24:57,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:24:57,572 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 13:24:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:57,634 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2024-11-18 13:24:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:24:57,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 31 [2024-11-18 13:24:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:57,635 INFO L225 Difference]: With dead ends: 166 [2024-11-18 13:24:57,635 INFO L226 Difference]: Without dead ends: 160 [2024-11-18 13:24:57,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:24:57,636 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:57,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 159 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:24:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-18 13:24:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-11-18 13:24:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1656050955414012) internal successors, (183), 157 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 13:24:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2024-11-18 13:24:57,659 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 31 [2024-11-18 13:24:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:57,660 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2024-11-18 13:24:57,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 13:24:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2024-11-18 13:24:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:24:57,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:57,660 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:57,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-18 13:24:57,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:57,861 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:57,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1999889776, now seen corresponding path program 27 times [2024-11-18 13:24:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324177132] [2024-11-18 13:24:57,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:57,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:24:57,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:58,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324177132] [2024-11-18 13:24:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324177132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476688673] [2024-11-18 13:24:58,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:24:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:58,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:58,194 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:58,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 13:24:58,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:24:58,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:58,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 13:24:58,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:58,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:24:58,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476688673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:58,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:58,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2024-11-18 13:24:58,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952820361] [2024-11-18 13:24:58,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:58,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 13:24:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 13:24:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:24:58,578 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 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 13:24:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:24:58,890 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2024-11-18 13:24:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:24:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 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 13:24:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:24:58,891 INFO L225 Difference]: With dead ends: 196 [2024-11-18 13:24:58,891 INFO L226 Difference]: Without dead ends: 187 [2024-11-18 13:24:58,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1930, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:24:58,892 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:24:58,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 747 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:24:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-18 13:24:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2024-11-18 13:24:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.1626506024096386) internal successors, (193), 166 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 13:24:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2024-11-18 13:24:58,917 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 32 [2024-11-18 13:24:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:24:58,917 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2024-11-18 13:24:58,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 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 13:24:58,918 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2024-11-18 13:24:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:24:58,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:24:58,924 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:24:58,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-18 13:24:59,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 13:24:59,125 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:24:59,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:24:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash -120192688, now seen corresponding path program 28 times [2024-11-18 13:24:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:24:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123046210] [2024-11-18 13:24:59,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:24:59,132 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:59,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:59,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:24:59,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123046210] [2024-11-18 13:24:59,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123046210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:24:59,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182910963] [2024-11-18 13:24:59,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:24:59,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:24:59,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:24:59,366 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:24:59,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 13:24:59,427 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:24:59,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:24:59,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 13:24:59,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:24:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:59,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:24:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:24:59,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182910963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:24:59,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:24:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-11-18 13:24:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471201770] [2024-11-18 13:24:59,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:24:59,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 13:24:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:24:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 13:24:59,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2024-11-18 13:24:59,730 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:25:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:00,041 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions. [2024-11-18 13:25:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:25:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:00,042 INFO L225 Difference]: With dead ends: 181 [2024-11-18 13:25:00,042 INFO L226 Difference]: Without dead ends: 158 [2024-11-18 13:25:00,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:25:00,043 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:00,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 709 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-18 13:25:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-18 13:25:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1656050955414012) internal successors, (183), 157 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 13:25:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2024-11-18 13:25:00,073 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 32 [2024-11-18 13:25:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:00,073 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2024-11-18 13:25:00,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:25:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2024-11-18 13:25:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:25:00,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:00,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:00,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:00,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-18 13:25:00,275 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:00,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1085561488, now seen corresponding path program 29 times [2024-11-18 13:25:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756840377] [2024-11-18 13:25:00,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:00,282 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:00,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:00,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:00,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756840377] [2024-11-18 13:25:00,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756840377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:00,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292976455] [2024-11-18 13:25:00,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:00,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:00,446 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:00,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 13:25:00,501 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:00,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:00,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 13:25:00,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:00,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292976455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:00,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-18 13:25:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433641977] [2024-11-18 13:25:00,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:00,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 13:25:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 13:25:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:25:00,736 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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 13:25:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:00,948 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2024-11-18 13:25:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:25:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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 32 [2024-11-18 13:25:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:00,949 INFO L225 Difference]: With dead ends: 181 [2024-11-18 13:25:00,949 INFO L226 Difference]: Without dead ends: 175 [2024-11-18 13:25:00,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 13:25:00,950 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:00,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 341 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-18 13:25:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2024-11-18 13:25:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.1666666666666667) internal successors, (196), 168 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 13:25:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2024-11-18 13:25:00,988 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 32 [2024-11-18 13:25:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:00,988 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2024-11-18 13:25:00,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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 13:25:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2024-11-18 13:25:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:25:00,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:00,989 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:01,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-18 13:25:01,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-18 13:25:01,189 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:01,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1204403466, now seen corresponding path program 30 times [2024-11-18 13:25:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299543551] [2024-11-18 13:25:01,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:01,199 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:01,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299543551] [2024-11-18 13:25:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299543551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939031225] [2024-11-18 13:25:01,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:01,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:01,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:01,364 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:01,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 13:25:01,429 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:01,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:01,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:25:01,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:01,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939031225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:01,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:01,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-11-18 13:25:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26550473] [2024-11-18 13:25:01,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:01,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:25:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:25:01,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:25:01,895 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:02,196 INFO L93 Difference]: Finished difference Result 236 states and 272 transitions. [2024-11-18 13:25:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:25:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-18 13:25:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:02,197 INFO L225 Difference]: With dead ends: 236 [2024-11-18 13:25:02,197 INFO L226 Difference]: Without dead ends: 204 [2024-11-18 13:25:02,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:02,198 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:02,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 336 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-18 13:25:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 185. [2024-11-18 13:25:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.1684782608695652) internal successors, (215), 184 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 215 transitions. [2024-11-18 13:25:02,228 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 215 transitions. Word has length 33 [2024-11-18 13:25:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:02,228 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 215 transitions. [2024-11-18 13:25:02,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 215 transitions. [2024-11-18 13:25:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:25:02,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:02,229 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:02,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:02,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-18 13:25:02,429 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:02,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2059494761, now seen corresponding path program 31 times [2024-11-18 13:25:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034441622] [2024-11-18 13:25:02,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034441622] [2024-11-18 13:25:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034441622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753506563] [2024-11-18 13:25:02,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:02,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:02,604 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:02,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 13:25:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:02,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:25:02,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:02,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:03,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753506563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:03,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:03,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-11-18 13:25:03,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945177049] [2024-11-18 13:25:03,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:03,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 13:25:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 13:25:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:25:03,098 INFO L87 Difference]: Start difference. First operand 185 states and 215 transitions. Second operand has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:03,509 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2024-11-18 13:25:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 13:25:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-18 13:25:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:03,510 INFO L225 Difference]: With dead ends: 204 [2024-11-18 13:25:03,510 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 13:25:03,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:03,511 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:03,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 380 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 13:25:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-18 13:25:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.1657754010695187) internal successors, (218), 187 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 13:25:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2024-11-18 13:25:03,543 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 33 [2024-11-18 13:25:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:03,543 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2024-11-18 13:25:03,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2024-11-18 13:25:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:25:03,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:03,544 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:03,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:03,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-18 13:25:03,745 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:03,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 893931157, now seen corresponding path program 32 times [2024-11-18 13:25:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985400305] [2024-11-18 13:25:03,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:03,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:03,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985400305] [2024-11-18 13:25:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985400305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057101137] [2024-11-18 13:25:03,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:03,810 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:03,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 13:25:03,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:03,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:03,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:25:03,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:03,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057101137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:03,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-18 13:25:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318399069] [2024-11-18 13:25:03,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:03,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 13:25:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 13:25:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:25:03,967 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:04,080 INFO L93 Difference]: Finished difference Result 229 states and 268 transitions. [2024-11-18 13:25:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:25:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-18 13:25:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:04,081 INFO L225 Difference]: With dead ends: 229 [2024-11-18 13:25:04,082 INFO L226 Difference]: Without dead ends: 215 [2024-11-18 13:25:04,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:25:04,084 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:04,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-18 13:25:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 210. [2024-11-18 13:25:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.1818181818181819) internal successors, (247), 209 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 13:25:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 247 transitions. [2024-11-18 13:25:04,120 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 247 transitions. Word has length 33 [2024-11-18 13:25:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:04,120 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 247 transitions. [2024-11-18 13:25:04,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 247 transitions. [2024-11-18 13:25:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:25:04,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:04,122 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:04,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:04,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:04,323 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:04,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1979153752, now seen corresponding path program 33 times [2024-11-18 13:25:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969508069] [2024-11-18 13:25:04,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:04,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:04,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:25:04,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969508069] [2024-11-18 13:25:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969508069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411293654] [2024-11-18 13:25:04,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:04,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:04,396 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:04,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-18 13:25:04,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:25:04,461 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:04,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:25:04,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:04,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:25:04,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411293654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:04,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-18 13:25:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064447489] [2024-11-18 13:25:04,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:04,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 13:25:04,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:04,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 13:25:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:25:04,556 INFO L87 Difference]: Start difference. First operand 210 states and 247 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:04,655 INFO L93 Difference]: Finished difference Result 338 states and 408 transitions. [2024-11-18 13:25:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:25:04,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-18 13:25:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:04,657 INFO L225 Difference]: With dead ends: 338 [2024-11-18 13:25:04,657 INFO L226 Difference]: Without dead ends: 248 [2024-11-18 13:25:04,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:25:04,658 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:04,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 176 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-18 13:25:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-18 13:25:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.1821862348178138) internal successors, (292), 247 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 13:25:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 292 transitions. [2024-11-18 13:25:04,701 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 292 transitions. Word has length 33 [2024-11-18 13:25:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:04,701 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 292 transitions. [2024-11-18 13:25:04,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 292 transitions. [2024-11-18 13:25:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:25:04,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:04,702 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:04,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:04,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-18 13:25:04,903 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:04,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:04,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1242809295, now seen corresponding path program 34 times [2024-11-18 13:25:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:04,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944326555] [2024-11-18 13:25:04,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:04,911 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:04,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:05,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944326555] [2024-11-18 13:25:05,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944326555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747007925] [2024-11-18 13:25:05,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:05,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:05,156 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:05,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-18 13:25:05,214 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:05,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:05,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:25:05,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:05,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:05,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747007925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:05,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:05,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-11-18 13:25:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342401939] [2024-11-18 13:25:05,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:05,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 13:25:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 13:25:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:25:05,520 INFO L87 Difference]: Start difference. First operand 248 states and 292 transitions. Second operand has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:25:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:05,951 INFO L93 Difference]: Finished difference Result 293 states and 342 transitions. [2024-11-18 13:25:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:25:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:25:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:05,953 INFO L225 Difference]: With dead ends: 293 [2024-11-18 13:25:05,953 INFO L226 Difference]: Without dead ends: 284 [2024-11-18 13:25:05,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:25:05,954 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 77 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:05,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1023 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-18 13:25:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 257. [2024-11-18 13:25:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.1796875) internal successors, (302), 256 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 13:25:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2024-11-18 13:25:05,999 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 34 [2024-11-18 13:25:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:06,000 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2024-11-18 13:25:06,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:25:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2024-11-18 13:25:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:25:06,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:06,000 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:06,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-18 13:25:06,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:06,201 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:06,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 489303023, now seen corresponding path program 35 times [2024-11-18 13:25:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42891172] [2024-11-18 13:25:06,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:06,209 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:06,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42891172] [2024-11-18 13:25:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42891172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330551905] [2024-11-18 13:25:06,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:06,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:06,430 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:06,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-18 13:25:06,490 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:06,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:06,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 13:25:06,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:06,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330551905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:06,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2024-11-18 13:25:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313095395] [2024-11-18 13:25:06,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:06,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 13:25:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 13:25:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1104, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:25:06,753 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:07,084 INFO L93 Difference]: Finished difference Result 272 states and 316 transitions. [2024-11-18 13:25:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 13:25:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:07,089 INFO L225 Difference]: With dead ends: 272 [2024-11-18 13:25:07,089 INFO L226 Difference]: Without dead ends: 248 [2024-11-18 13:25:07,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1926, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:25:07,090 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 53 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:07,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 705 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-18 13:25:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-18 13:25:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.1821862348178138) internal successors, (292), 247 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 13:25:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 292 transitions. [2024-11-18 13:25:07,153 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 292 transitions. Word has length 34 [2024-11-18 13:25:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:07,153 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 292 transitions. [2024-11-18 13:25:07,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 292 transitions. [2024-11-18 13:25:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:25:07,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:07,154 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:07,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-18 13:25:07,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-18 13:25:07,355 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:07,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2122819938, now seen corresponding path program 36 times [2024-11-18 13:25:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984085834] [2024-11-18 13:25:07,356 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:07,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:07,366 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:25:07,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:25:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984085834] [2024-11-18 13:25:07,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984085834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756323456] [2024-11-18 13:25:07,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:07,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:07,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:07,486 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:07,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-18 13:25:07,546 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:25:07,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:07,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:25:07,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:25:07,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:25:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756323456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:07,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-18 13:25:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43665681] [2024-11-18 13:25:07,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:07,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 13:25:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 13:25:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:25:07,768 INFO L87 Difference]: Start difference. First operand 248 states and 292 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 13:25:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:07,954 INFO L93 Difference]: Finished difference Result 318 states and 374 transitions. [2024-11-18 13:25:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:25:07,955 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 34 [2024-11-18 13:25:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:07,956 INFO L225 Difference]: With dead ends: 318 [2024-11-18 13:25:07,956 INFO L226 Difference]: Without dead ends: 273 [2024-11-18 13:25:07,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-18 13:25:07,956 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:07,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 277 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-18 13:25:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-11-18 13:25:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.161764705882353) internal successors, (316), 272 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 13:25:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 316 transitions. [2024-11-18 13:25:08,004 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 316 transitions. Word has length 34 [2024-11-18 13:25:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:08,004 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 316 transitions. [2024-11-18 13:25:08,004 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 13:25:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 316 transitions. [2024-11-18 13:25:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:25:08,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:08,005 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:08,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:08,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-18 13:25:08,206 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:08,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1302431921, now seen corresponding path program 37 times [2024-11-18 13:25:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610835910] [2024-11-18 13:25:08,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610835910] [2024-11-18 13:25:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610835910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437960107] [2024-11-18 13:25:08,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:08,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:08,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:08,433 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:08,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-18 13:25:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:08,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 13:25:08,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:08,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437960107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:08,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-11-18 13:25:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199873294] [2024-11-18 13:25:08,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:08,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:25:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:25:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:25:08,849 INFO L87 Difference]: Start difference. First operand 273 states and 316 transitions. Second operand has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:25:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:09,139 INFO L93 Difference]: Finished difference Result 306 states and 353 transitions. [2024-11-18 13:25:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:25:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:09,140 INFO L225 Difference]: With dead ends: 306 [2024-11-18 13:25:09,140 INFO L226 Difference]: Without dead ends: 281 [2024-11-18 13:25:09,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=1745, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:09,141 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:09,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 418 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-18 13:25:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 271. [2024-11-18 13:25:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.1666666666666667) internal successors, (315), 270 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 13:25:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 315 transitions. [2024-11-18 13:25:09,190 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 315 transitions. Word has length 34 [2024-11-18 13:25:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:09,190 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 315 transitions. [2024-11-18 13:25:09,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:25:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 315 transitions. [2024-11-18 13:25:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:25:09,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:09,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:09,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:09,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-18 13:25:09,392 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:09,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -266355998, now seen corresponding path program 38 times [2024-11-18 13:25:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721559884] [2024-11-18 13:25:09,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:09,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:09,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:25:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721559884] [2024-11-18 13:25:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721559884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715475629] [2024-11-18 13:25:09,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:09,540 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:09,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-18 13:25:09,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:09,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:09,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:25:09,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:25:09,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:25:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715475629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:09,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:09,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-18 13:25:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617045028] [2024-11-18 13:25:09,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:09,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 13:25:09,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 13:25:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:25:09,880 INFO L87 Difference]: Start difference. First operand 271 states and 315 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:25:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:10,100 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2024-11-18 13:25:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:25:10,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:25:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:10,101 INFO L225 Difference]: With dead ends: 295 [2024-11-18 13:25:10,101 INFO L226 Difference]: Without dead ends: 271 [2024-11-18 13:25:10,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:25:10,103 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:10,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-18 13:25:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-18 13:25:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.1444444444444444) internal successors, (309), 270 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 13:25:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 309 transitions. [2024-11-18 13:25:10,162 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 309 transitions. Word has length 34 [2024-11-18 13:25:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:10,163 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 309 transitions. [2024-11-18 13:25:10,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:25:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 309 transitions. [2024-11-18 13:25:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 13:25:10,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:10,163 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:10,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-18 13:25:10,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-18 13:25:10,368 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:10,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash 535019927, now seen corresponding path program 39 times [2024-11-18 13:25:10,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:10,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887748780] [2024-11-18 13:25:10,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:10,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:10,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 13:25:10,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:10,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887748780] [2024-11-18 13:25:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887748780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436604501] [2024-11-18 13:25:10,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:10,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:10,553 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:10,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-18 13:25:10,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 13:25:10,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:10,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 13:25:10,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:10,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436604501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:11,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-18 13:25:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703017022] [2024-11-18 13:25:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:11,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 13:25:11,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 13:25:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 13:25:11,174 INFO L87 Difference]: Start difference. First operand 271 states and 309 transitions. Second operand has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:11,567 INFO L93 Difference]: Finished difference Result 380 states and 430 transitions. [2024-11-18 13:25:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:25:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 13:25:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:11,569 INFO L225 Difference]: With dead ends: 380 [2024-11-18 13:25:11,569 INFO L226 Difference]: Without dead ends: 344 [2024-11-18 13:25:11,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:25:11,570 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:11,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 398 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-18 13:25:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 301. [2024-11-18 13:25:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.1433333333333333) internal successors, (343), 300 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 13:25:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 343 transitions. [2024-11-18 13:25:11,634 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 343 transitions. Word has length 35 [2024-11-18 13:25:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 343 transitions. [2024-11-18 13:25:11,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 343 transitions. [2024-11-18 13:25:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 13:25:11,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:11,635 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:11,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-18 13:25:11,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-18 13:25:11,836 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:11,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash -203006442, now seen corresponding path program 40 times [2024-11-18 13:25:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:11,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221875018] [2024-11-18 13:25:11,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:11,844 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:11,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221875018] [2024-11-18 13:25:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221875018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012444565] [2024-11-18 13:25:11,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:11,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:11,987 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-18 13:25:12,048 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:12,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:12,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 13:25:12,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:12,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:12,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012444565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:12,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:12,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2024-11-18 13:25:12,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394898276] [2024-11-18 13:25:12,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:12,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 13:25:12,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 13:25:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:25:12,576 INFO L87 Difference]: Start difference. First operand 301 states and 343 transitions. Second operand has 38 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:13,017 INFO L93 Difference]: Finished difference Result 323 states and 369 transitions. [2024-11-18 13:25:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:25:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 13:25:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:13,018 INFO L225 Difference]: With dead ends: 323 [2024-11-18 13:25:13,018 INFO L226 Difference]: Without dead ends: 305 [2024-11-18 13:25:13,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=2158, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:25:13,019 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:13,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-18 13:25:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-18 13:25:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.1414473684210527) internal successors, (347), 304 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 13:25:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 347 transitions. [2024-11-18 13:25:13,088 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 347 transitions. Word has length 35 [2024-11-18 13:25:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:13,088 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 347 transitions. [2024-11-18 13:25:13,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 347 transitions. [2024-11-18 13:25:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 13:25:13,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:13,089 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:13,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:13,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-18 13:25:13,289 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:13,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1280821844, now seen corresponding path program 41 times [2024-11-18 13:25:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978133353] [2024-11-18 13:25:13,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:13,296 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:13,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978133353] [2024-11-18 13:25:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978133353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955105868] [2024-11-18 13:25:13,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:13,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:13,360 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:13,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-18 13:25:13,431 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:13,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:13,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:25:13,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:13,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955105868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:13,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:13,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-18 13:25:13,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405425247] [2024-11-18 13:25:13,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:13,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:25:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:25:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:25:13,507 INFO L87 Difference]: Start difference. First operand 305 states and 347 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 13:25:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:13,627 INFO L93 Difference]: Finished difference Result 371 states and 424 transitions. [2024-11-18 13:25:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:25:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 13:25:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:13,629 INFO L225 Difference]: With dead ends: 371 [2024-11-18 13:25:13,629 INFO L226 Difference]: Without dead ends: 291 [2024-11-18 13:25:13,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:25:13,629 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:13,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 163 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-18 13:25:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-18 13:25:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.1344827586206896) internal successors, (329), 290 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 13:25:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 329 transitions. [2024-11-18 13:25:13,696 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 329 transitions. Word has length 35 [2024-11-18 13:25:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:13,696 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 329 transitions. [2024-11-18 13:25:13,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 13:25:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 329 transitions. [2024-11-18 13:25:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 13:25:13,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:13,697 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:13,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:13,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-18 13:25:13,897 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:13,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash 365909845, now seen corresponding path program 42 times [2024-11-18 13:25:13,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:13,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311659870] [2024-11-18 13:25:13,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:13,904 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:25:13,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311659870] [2024-11-18 13:25:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311659870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57063012] [2024-11-18 13:25:13,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:13,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:13,960 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:13,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-18 13:25:14,021 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:25:14,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:14,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:25:14,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:14,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57063012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:14,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:14,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-18 13:25:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515012011] [2024-11-18 13:25:14,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:14,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 13:25:14,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 13:25:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:25:14,109 INFO L87 Difference]: Start difference. First operand 291 states and 329 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:14,236 INFO L93 Difference]: Finished difference Result 303 states and 341 transitions. [2024-11-18 13:25:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:25:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 13:25:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:14,238 INFO L225 Difference]: With dead ends: 303 [2024-11-18 13:25:14,238 INFO L226 Difference]: Without dead ends: 297 [2024-11-18 13:25:14,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:25:14,238 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:14,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 166 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-18 13:25:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 292. [2024-11-18 13:25:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.134020618556701) internal successors, (330), 291 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 13:25:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 330 transitions. [2024-11-18 13:25:14,304 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 330 transitions. Word has length 35 [2024-11-18 13:25:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:14,304 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 330 transitions. [2024-11-18 13:25:14,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 330 transitions. [2024-11-18 13:25:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:25:14,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:14,305 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:14,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-18 13:25:14,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:14,506 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:14,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:14,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1335594960, now seen corresponding path program 43 times [2024-11-18 13:25:14,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:14,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480979905] [2024-11-18 13:25:14,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:14,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480979905] [2024-11-18 13:25:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480979905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576878526] [2024-11-18 13:25:14,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:14,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:14,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:14,777 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:14,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-18 13:25:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:14,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 13:25:14,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:15,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576878526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:15,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 41 [2024-11-18 13:25:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771341681] [2024-11-18 13:25:15,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:15,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-18 13:25:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-18 13:25:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1541, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 13:25:15,172 INFO L87 Difference]: Start difference. First operand 292 states and 330 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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 13:25:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:15,629 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2024-11-18 13:25:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 13:25:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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 36 [2024-11-18 13:25:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:15,630 INFO L225 Difference]: With dead ends: 341 [2024-11-18 13:25:15,630 INFO L226 Difference]: Without dead ends: 332 [2024-11-18 13:25:15,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=2700, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 13:25:15,631 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 89 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:15,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1077 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-18 13:25:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 301. [2024-11-18 13:25:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.1333333333333333) internal successors, (340), 300 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 13:25:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 340 transitions. [2024-11-18 13:25:15,699 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 340 transitions. Word has length 36 [2024-11-18 13:25:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:15,699 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 340 transitions. [2024-11-18 13:25:15,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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 13:25:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 340 transitions. [2024-11-18 13:25:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:25:15,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:15,699 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:15,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:15,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-18 13:25:15,900 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:15,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1858622864, now seen corresponding path program 44 times [2024-11-18 13:25:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811238443] [2024-11-18 13:25:15,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:15,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:15,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811238443] [2024-11-18 13:25:16,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811238443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137507268] [2024-11-18 13:25:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:16,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:16,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:16,164 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:16,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-18 13:25:16,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:16,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:16,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:25:16,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:16,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137507268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:16,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:16,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-11-18 13:25:16,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519302280] [2024-11-18 13:25:16,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:16,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 13:25:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 13:25:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 13:25:16,553 INFO L87 Difference]: Start difference. First operand 301 states and 340 transitions. Second operand has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 13:25:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:16,962 INFO L93 Difference]: Finished difference Result 317 states and 355 transitions. [2024-11-18 13:25:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:25:16,962 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 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 36 [2024-11-18 13:25:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:16,963 INFO L225 Difference]: With dead ends: 317 [2024-11-18 13:25:16,963 INFO L226 Difference]: Without dead ends: 292 [2024-11-18 13:25:16,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:25:16,964 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 63 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:16,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 978 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-18 13:25:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2024-11-18 13:25:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.134020618556701) internal successors, (330), 291 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 13:25:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 330 transitions. [2024-11-18 13:25:17,025 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 330 transitions. Word has length 36 [2024-11-18 13:25:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:17,025 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 330 transitions. [2024-11-18 13:25:17,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 13:25:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 330 transitions. [2024-11-18 13:25:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:25:17,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:17,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:17,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:17,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:17,226 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:17,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1659359184, now seen corresponding path program 45 times [2024-11-18 13:25:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945392781] [2024-11-18 13:25:17,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:17,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:25:17,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:17,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945392781] [2024-11-18 13:25:17,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945392781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:17,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463275185] [2024-11-18 13:25:17,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:17,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:17,470 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:17,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-18 13:25:17,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:25:17,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:17,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 13:25:17,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:17,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:17,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463275185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:17,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:17,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-11-18 13:25:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895115675] [2024-11-18 13:25:17,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:17,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 13:25:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 13:25:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:25:17,847 INFO L87 Difference]: Start difference. First operand 292 states and 330 transitions. Second operand has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 13:25:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:18,175 INFO L93 Difference]: Finished difference Result 307 states and 344 transitions. [2024-11-18 13:25:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 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 36 [2024-11-18 13:25:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:18,176 INFO L225 Difference]: With dead ends: 307 [2024-11-18 13:25:18,176 INFO L226 Difference]: Without dead ends: 281 [2024-11-18 13:25:18,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=2098, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 13:25:18,177 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:18,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 686 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-18 13:25:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-18 13:25:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1357142857142857) internal successors, (318), 280 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 13:25:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 318 transitions. [2024-11-18 13:25:18,235 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 318 transitions. Word has length 36 [2024-11-18 13:25:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:18,235 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 318 transitions. [2024-11-18 13:25:18,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 13:25:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 318 transitions. [2024-11-18 13:25:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:25:18,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:18,236 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:18,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-18 13:25:18,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:18,436 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:18,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash 59566704, now seen corresponding path program 46 times [2024-11-18 13:25:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:18,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536330410] [2024-11-18 13:25:18,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:18,443 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:18,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536330410] [2024-11-18 13:25:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536330410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995247882] [2024-11-18 13:25:18,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:18,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:18,628 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:18,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-18 13:25:18,691 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:18,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:18,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 13:25:18,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:18,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:18,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995247882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:18,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:18,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-11-18 13:25:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036491557] [2024-11-18 13:25:18,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:18,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:25:18,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:25:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:25:18,974 INFO L87 Difference]: Start difference. First operand 281 states and 318 transitions. Second operand has 34 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:19,242 INFO L93 Difference]: Finished difference Result 306 states and 346 transitions. [2024-11-18 13:25:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:19,242 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 13:25:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:19,243 INFO L225 Difference]: With dead ends: 306 [2024-11-18 13:25:19,244 INFO L226 Difference]: Without dead ends: 300 [2024-11-18 13:25:19,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:19,244 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:19,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 410 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-18 13:25:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 293. [2024-11-18 13:25:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.1369863013698631) internal successors, (332), 292 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 13:25:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 332 transitions. [2024-11-18 13:25:19,310 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 332 transitions. Word has length 36 [2024-11-18 13:25:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:19,310 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 332 transitions. [2024-11-18 13:25:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 332 transitions. [2024-11-18 13:25:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:25:19,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:19,311 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:19,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-18 13:25:19,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-18 13:25:19,511 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:19,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2086100650, now seen corresponding path program 47 times [2024-11-18 13:25:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535364360] [2024-11-18 13:25:19,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:19,520 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:25:19,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:19,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535364360] [2024-11-18 13:25:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535364360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:19,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998176046] [2024-11-18 13:25:19,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:19,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:19,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:19,692 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:19,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-18 13:25:19,756 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:25:19,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:19,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 13:25:19,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:20,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:20,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998176046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:20,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:20,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 43 [2024-11-18 13:25:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832926528] [2024-11-18 13:25:20,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:20,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:25:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:25:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:25:20,375 INFO L87 Difference]: Start difference. First operand 293 states and 332 transitions. Second operand has 43 states, 43 states have (on average 1.627906976744186) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 13:25:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:20,845 INFO L93 Difference]: Finished difference Result 414 states and 465 transitions. [2024-11-18 13:25:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:25:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.627906976744186) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 13:25:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:20,846 INFO L225 Difference]: With dead ends: 414 [2024-11-18 13:25:20,846 INFO L226 Difference]: Without dead ends: 376 [2024-11-18 13:25:20,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=368, Invalid=2824, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 13:25:20,847 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:20,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 444 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-18 13:25:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 324. [2024-11-18 13:25:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.1362229102167183) internal successors, (367), 323 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 13:25:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 367 transitions. [2024-11-18 13:25:20,921 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 367 transitions. Word has length 37 [2024-11-18 13:25:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:20,921 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 367 transitions. [2024-11-18 13:25:20,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.627906976744186) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 13:25:20,921 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 367 transitions. [2024-11-18 13:25:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:25:20,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:20,922 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:20,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:21,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-18 13:25:21,122 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:21,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 804885687, now seen corresponding path program 48 times [2024-11-18 13:25:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295625875] [2024-11-18 13:25:21,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:21,132 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 13:25:21,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295625875] [2024-11-18 13:25:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295625875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215609118] [2024-11-18 13:25:21,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:21,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:21,338 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:21,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-18 13:25:21,410 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 13:25:21,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:21,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 13:25:21,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:21,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215609118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:22,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:22,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-11-18 13:25:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921712157] [2024-11-18 13:25:22,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 13:25:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 13:25:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:22,101 INFO L87 Difference]: Start difference. First operand 324 states and 367 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:25:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:22,736 INFO L93 Difference]: Finished difference Result 347 states and 394 transitions. [2024-11-18 13:25:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:25:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 13:25:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:22,738 INFO L225 Difference]: With dead ends: 347 [2024-11-18 13:25:22,738 INFO L226 Difference]: Without dead ends: 328 [2024-11-18 13:25:22,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=234, Invalid=2958, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 13:25:22,739 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:22,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-18 13:25:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-11-18 13:25:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.1345565749235473) internal successors, (371), 327 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 13:25:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 371 transitions. [2024-11-18 13:25:22,818 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 371 transitions. Word has length 37 [2024-11-18 13:25:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:22,818 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 371 transitions. [2024-11-18 13:25:22,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:25:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 371 transitions. [2024-11-18 13:25:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:25:22,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:22,819 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:23,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-18 13:25:23,020 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:23,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -847136075, now seen corresponding path program 49 times [2024-11-18 13:25:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:23,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530868120] [2024-11-18 13:25:23,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:23,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530868120] [2024-11-18 13:25:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530868120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805998946] [2024-11-18 13:25:23,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:23,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:23,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:23,099 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:23,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-18 13:25:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:23,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:25:23,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805998946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:23,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-11-18 13:25:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407089315] [2024-11-18 13:25:23,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:23,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 13:25:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 13:25:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:25:23,279 INFO L87 Difference]: Start difference. First operand 328 states and 371 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:23,436 INFO L93 Difference]: Finished difference Result 380 states and 434 transitions. [2024-11-18 13:25:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:23,436 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 13:25:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:23,437 INFO L225 Difference]: With dead ends: 380 [2024-11-18 13:25:23,437 INFO L226 Difference]: Without dead ends: 365 [2024-11-18 13:25:23,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:25:23,438 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:23,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 156 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-18 13:25:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 356. [2024-11-18 13:25:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.1492957746478873) internal successors, (408), 355 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 13:25:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 408 transitions. [2024-11-18 13:25:23,522 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 408 transitions. Word has length 37 [2024-11-18 13:25:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:23,523 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 408 transitions. [2024-11-18 13:25:23,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 408 transitions. [2024-11-18 13:25:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:25:23,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:23,523 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:23,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-18 13:25:23,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-18 13:25:23,724 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:23,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 855363028, now seen corresponding path program 50 times [2024-11-18 13:25:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758246139] [2024-11-18 13:25:23,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:23,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:23,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758246139] [2024-11-18 13:25:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758246139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154611038] [2024-11-18 13:25:23,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:23,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:23,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:23,789 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:23,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-18 13:25:23,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:23,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:23,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:25:23,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:25:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154611038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:23,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:23,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-11-18 13:25:23,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265150730] [2024-11-18 13:25:23,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:23,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 13:25:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 13:25:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:25:23,948 INFO L87 Difference]: Start difference. First operand 356 states and 408 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:24,133 INFO L93 Difference]: Finished difference Result 538 states and 633 transitions. [2024-11-18 13:25:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 13:25:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:24,134 INFO L225 Difference]: With dead ends: 538 [2024-11-18 13:25:24,134 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 13:25:24,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:25:24,135 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:24,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 207 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 13:25:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-18 13:25:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.1501210653753027) internal successors, (475), 413 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 13:25:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 475 transitions. [2024-11-18 13:25:24,239 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 475 transitions. Word has length 37 [2024-11-18 13:25:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:24,239 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 475 transitions. [2024-11-18 13:25:24,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 475 transitions. [2024-11-18 13:25:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:24,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:24,240 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:24,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:24,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-18 13:25:24,441 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:24,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash -155710033, now seen corresponding path program 51 times [2024-11-18 13:25:24,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:24,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007116561] [2024-11-18 13:25:24,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:24,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 13:25:24,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:24,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007116561] [2024-11-18 13:25:24,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007116561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124237935] [2024-11-18 13:25:24,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:24,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:24,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:24,805 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:24,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-18 13:25:24,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 13:25:24,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:24,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:25:24,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:25,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:25,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124237935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:25,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:25,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-11-18 13:25:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960635327] [2024-11-18 13:25:25,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:25,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 13:25:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 13:25:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:25,248 INFO L87 Difference]: Start difference. First operand 414 states and 475 transitions. Second operand has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:25,862 INFO L93 Difference]: Finished difference Result 471 states and 538 transitions. [2024-11-18 13:25:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 13:25:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 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 38 [2024-11-18 13:25:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:25,864 INFO L225 Difference]: With dead ends: 471 [2024-11-18 13:25:25,864 INFO L226 Difference]: Without dead ends: 462 [2024-11-18 13:25:25,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 13:25:25,864 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 100 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:25,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1487 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-18 13:25:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 423. [2024-11-18 13:25:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.1492890995260663) internal successors, (485), 422 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 13:25:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 485 transitions. [2024-11-18 13:25:25,965 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 485 transitions. Word has length 38 [2024-11-18 13:25:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:25,965 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 485 transitions. [2024-11-18 13:25:25,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 485 transitions. [2024-11-18 13:25:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:25,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:25,965 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:25,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-18 13:25:26,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:26,166 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:26,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1493827249, now seen corresponding path program 52 times [2024-11-18 13:25:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097065341] [2024-11-18 13:25:26,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:26,174 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:26,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097065341] [2024-11-18 13:25:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097065341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825979336] [2024-11-18 13:25:26,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:26,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:26,482 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:26,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-18 13:25:26,549 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:26,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:26,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 13:25:26,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:26,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:26,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825979336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:26,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:26,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-11-18 13:25:26,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603914209] [2024-11-18 13:25:26,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:26,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:25:26,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:25:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1698, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:25:26,952 INFO L87 Difference]: Start difference. First operand 423 states and 485 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 13:25:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:27,504 INFO L93 Difference]: Finished difference Result 440 states and 501 transitions. [2024-11-18 13:25:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 13:25:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2024-11-18 13:25:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:27,506 INFO L225 Difference]: With dead ends: 440 [2024-11-18 13:25:27,506 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 13:25:27,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=2906, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 13:25:27,506 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 74 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:27,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1209 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 13:25:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-18 13:25:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.1501210653753027) internal successors, (475), 413 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 13:25:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 475 transitions. [2024-11-18 13:25:27,615 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 475 transitions. Word has length 38 [2024-11-18 13:25:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:27,615 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 475 transitions. [2024-11-18 13:25:27,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 13:25:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 475 transitions. [2024-11-18 13:25:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:27,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:27,615 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:27,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-18 13:25:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:27,816 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:27,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -375561937, now seen corresponding path program 53 times [2024-11-18 13:25:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:27,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334429211] [2024-11-18 13:25:27,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:27,825 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:27,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334429211] [2024-11-18 13:25:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334429211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2519830] [2024-11-18 13:25:28,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:28,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:28,052 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:28,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-18 13:25:28,120 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:25:28,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:28,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:25:28,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:28,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2519830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:28,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-11-18 13:25:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230653864] [2024-11-18 13:25:28,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:28,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 13:25:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 13:25:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 13:25:28,461 INFO L87 Difference]: Start difference. First operand 414 states and 475 transitions. Second operand has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:25:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:28,907 INFO L93 Difference]: Finished difference Result 430 states and 490 transitions. [2024-11-18 13:25:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:25:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 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 38 [2024-11-18 13:25:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:28,909 INFO L225 Difference]: With dead ends: 430 [2024-11-18 13:25:28,909 INFO L226 Difference]: Without dead ends: 403 [2024-11-18 13:25:28,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=2386, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:25:28,910 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:28,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 869 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-18 13:25:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2024-11-18 13:25:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.1517412935323383) internal successors, (463), 402 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 13:25:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 463 transitions. [2024-11-18 13:25:29,010 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 463 transitions. Word has length 38 [2024-11-18 13:25:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:29,010 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 463 transitions. [2024-11-18 13:25:29,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:25:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 463 transitions. [2024-11-18 13:25:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:29,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:29,011 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:29,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:29,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:29,211 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:29,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1552999778, now seen corresponding path program 54 times [2024-11-18 13:25:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:29,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108877347] [2024-11-18 13:25:29,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:29,219 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:29,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:25:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108877347] [2024-11-18 13:25:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108877347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19463809] [2024-11-18 13:25:29,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:29,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:29,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:29,321 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:29,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-18 13:25:29,400 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:29,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:29,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:25:29,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:25:29,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:25:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19463809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:29,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:29,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-18 13:25:29,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682776374] [2024-11-18 13:25:29,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:29,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 13:25:29,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:29,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 13:25:29,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-18 13:25:29,712 INFO L87 Difference]: Start difference. First operand 403 states and 463 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:29,977 INFO L93 Difference]: Finished difference Result 500 states and 576 transitions. [2024-11-18 13:25:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:25:29,977 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-18 13:25:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:29,979 INFO L225 Difference]: With dead ends: 500 [2024-11-18 13:25:29,979 INFO L226 Difference]: Without dead ends: 446 [2024-11-18 13:25:29,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:25:29,979 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:29,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-18 13:25:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-11-18 13:25:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.1348314606741574) internal successors, (505), 445 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 13:25:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 505 transitions. [2024-11-18 13:25:30,093 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 505 transitions. Word has length 38 [2024-11-18 13:25:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 505 transitions. [2024-11-18 13:25:30,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 505 transitions. [2024-11-18 13:25:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:30,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:30,094 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:30,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-18 13:25:30,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:30,294 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:30,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1465831985, now seen corresponding path program 55 times [2024-11-18 13:25:30,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:30,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146730513] [2024-11-18 13:25:30,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146730513] [2024-11-18 13:25:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146730513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038266388] [2024-11-18 13:25:30,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:30,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:30,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:30,525 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:30,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-18 13:25:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:30,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 13:25:30,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:30,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038266388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:30,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2024-11-18 13:25:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673923349] [2024-11-18 13:25:30,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:30,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 13:25:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 13:25:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:25:30,941 INFO L87 Difference]: Start difference. First operand 446 states and 505 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 13:25:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:31,324 INFO L93 Difference]: Finished difference Result 482 states and 545 transitions. [2024-11-18 13:25:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 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 38 [2024-11-18 13:25:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:31,326 INFO L225 Difference]: With dead ends: 482 [2024-11-18 13:25:31,326 INFO L226 Difference]: Without dead ends: 454 [2024-11-18 13:25:31,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:25:31,327 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:31,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 561 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-18 13:25:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 443. [2024-11-18 13:25:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.1380090497737556) internal successors, (503), 442 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 13:25:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2024-11-18 13:25:31,437 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 38 [2024-11-18 13:25:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:31,437 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2024-11-18 13:25:31,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 13:25:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2024-11-18 13:25:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:25:31,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:31,438 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:31,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-18 13:25:31,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-18 13:25:31,638 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:31,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1135200674, now seen corresponding path program 56 times [2024-11-18 13:25:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351092640] [2024-11-18 13:25:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:31,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:31,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:25:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351092640] [2024-11-18 13:25:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351092640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276820217] [2024-11-18 13:25:31,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:31,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:31,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:31,806 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:31,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-18 13:25:31,876 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:31,876 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:31,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:25:31,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:25:32,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:25:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276820217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:32,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2024-11-18 13:25:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515895297] [2024-11-18 13:25:32,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 13:25:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 13:25:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-11-18 13:25:32,194 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 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 13:25:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:32,544 INFO L93 Difference]: Finished difference Result 472 states and 532 transitions. [2024-11-18 13:25:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:25:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 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 38 [2024-11-18 13:25:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:32,546 INFO L225 Difference]: With dead ends: 472 [2024-11-18 13:25:32,546 INFO L226 Difference]: Without dead ends: 443 [2024-11-18 13:25:32,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:25:32,546 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:32,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 385 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-18 13:25:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2024-11-18 13:25:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.1199095022624435) internal successors, (495), 442 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 13:25:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 495 transitions. [2024-11-18 13:25:32,659 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 495 transitions. Word has length 38 [2024-11-18 13:25:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:32,659 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 495 transitions. [2024-11-18 13:25:32,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 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 13:25:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 495 transitions. [2024-11-18 13:25:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:25:32,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:32,660 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:32,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:32,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-18 13:25:32,860 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:32,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash 130593719, now seen corresponding path program 57 times [2024-11-18 13:25:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217838370] [2024-11-18 13:25:32,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:32,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:25:32,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217838370] [2024-11-18 13:25:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217838370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871509246] [2024-11-18 13:25:33,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:33,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:33,164 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:33,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-18 13:25:33,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:25:33,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:33,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 13:25:33,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:33,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871509246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:34,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-18 13:25:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699388303] [2024-11-18 13:25:34,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:34,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 13:25:34,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 13:25:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:25:34,030 INFO L87 Difference]: Start difference. First operand 443 states and 495 transitions. Second operand has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:34,699 INFO L93 Difference]: Finished difference Result 628 states and 695 transitions. [2024-11-18 13:25:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:34,700 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-18 13:25:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:34,701 INFO L225 Difference]: With dead ends: 628 [2024-11-18 13:25:34,701 INFO L226 Difference]: Without dead ends: 586 [2024-11-18 13:25:34,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=450, Invalid=3710, Unknown=0, NotChecked=0, Total=4160 [2024-11-18 13:25:34,702 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:34,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 470 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-18 13:25:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 490. [2024-11-18 13:25:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.1186094069529653) internal successors, (547), 489 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 13:25:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 547 transitions. [2024-11-18 13:25:34,835 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 547 transitions. Word has length 39 [2024-11-18 13:25:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:34,835 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 547 transitions. [2024-11-18 13:25:34,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 547 transitions. [2024-11-18 13:25:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:25:34,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:34,836 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:34,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:35,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-18 13:25:35,036 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:35,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -443143050, now seen corresponding path program 58 times [2024-11-18 13:25:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247216502] [2024-11-18 13:25:35,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:35,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:35,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:35,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247216502] [2024-11-18 13:25:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247216502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007894858] [2024-11-18 13:25:35,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:35,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:35,289 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:35,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-18 13:25:35,371 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:35,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:35,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 13:25:35,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:35,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007894858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:36,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 48 [2024-11-18 13:25:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682874687] [2024-11-18 13:25:36,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:36,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-18 13:25:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-18 13:25:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 13:25:36,167 INFO L87 Difference]: Start difference. First operand 490 states and 547 transitions. Second operand has 48 states, 48 states have (on average 1.5625) internal successors, (75), 48 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:36,892 INFO L93 Difference]: Finished difference Result 516 states and 578 transitions. [2024-11-18 13:25:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:25:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5625) internal successors, (75), 48 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-18 13:25:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:36,893 INFO L225 Difference]: With dead ends: 516 [2024-11-18 13:25:36,893 INFO L226 Difference]: Without dead ends: 495 [2024-11-18 13:25:36,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 41 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=270, Invalid=3636, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 13:25:36,894 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:36,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-18 13:25:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-18 13:25:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.1174089068825912) internal successors, (552), 494 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 13:25:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 552 transitions. [2024-11-18 13:25:37,027 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 552 transitions. Word has length 39 [2024-11-18 13:25:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:37,027 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 552 transitions. [2024-11-18 13:25:37,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5625) internal successors, (75), 48 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 552 transitions. [2024-11-18 13:25:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:25:37,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:37,028 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:37,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:37,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:37,228 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:37,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -24932840, now seen corresponding path program 59 times [2024-11-18 13:25:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095044709] [2024-11-18 13:25:37,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:37,236 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:25:37,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095044709] [2024-11-18 13:25:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095044709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044298218] [2024-11-18 13:25:37,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:37,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:37,305 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:37,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-18 13:25:37,382 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:25:37,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:37,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:25:37,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:37,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044298218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:37,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-18 13:25:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169308867] [2024-11-18 13:25:37,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:37,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:25:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:25:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:25:37,481 INFO L87 Difference]: Start difference. First operand 495 states and 552 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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 13:25:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:37,713 INFO L93 Difference]: Finished difference Result 589 states and 661 transitions. [2024-11-18 13:25:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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 39 [2024-11-18 13:25:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:37,715 INFO L225 Difference]: With dead ends: 589 [2024-11-18 13:25:37,715 INFO L226 Difference]: Without dead ends: 481 [2024-11-18 13:25:37,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:25:37,716 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:37,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-18 13:25:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-18 13:25:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.1125) internal successors, (534), 480 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 13:25:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 534 transitions. [2024-11-18 13:25:37,853 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 534 transitions. Word has length 39 [2024-11-18 13:25:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:37,853 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 534 transitions. [2024-11-18 13:25:37,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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 13:25:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 534 transitions. [2024-11-18 13:25:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:25:37,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:37,853 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:37,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:38,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:38,054 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:38,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -601397259, now seen corresponding path program 60 times [2024-11-18 13:25:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320195257] [2024-11-18 13:25:38,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:38,062 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:38,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:38,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320195257] [2024-11-18 13:25:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320195257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077074685] [2024-11-18 13:25:38,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:38,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:38,133 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:38,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-18 13:25:38,205 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:38,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:38,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:25:38,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:38,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077074685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:38,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-18 13:25:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985842669] [2024-11-18 13:25:38,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:38,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 13:25:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 13:25:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:25:38,310 INFO L87 Difference]: Start difference. First operand 481 states and 534 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:38,539 INFO L93 Difference]: Finished difference Result 497 states and 550 transitions. [2024-11-18 13:25:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 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 39 [2024-11-18 13:25:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:38,541 INFO L225 Difference]: With dead ends: 497 [2024-11-18 13:25:38,541 INFO L226 Difference]: Without dead ends: 491 [2024-11-18 13:25:38,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:25:38,541 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:38,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 161 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:25:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-18 13:25:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 482. [2024-11-18 13:25:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.1122661122661122) internal successors, (535), 481 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 13:25:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 535 transitions. [2024-11-18 13:25:38,674 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 535 transitions. Word has length 39 [2024-11-18 13:25:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:38,674 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 535 transitions. [2024-11-18 13:25:38,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 13:25:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 535 transitions. [2024-11-18 13:25:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:25:38,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:38,675 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:38,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-18 13:25:38,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-18 13:25:38,875 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:38,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash -189895216, now seen corresponding path program 61 times [2024-11-18 13:25:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322132248] [2024-11-18 13:25:38,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322132248] [2024-11-18 13:25:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322132248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140389070] [2024-11-18 13:25:39,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:39,211 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:39,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-18 13:25:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:39,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-18 13:25:39,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:39,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140389070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:39,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2024-11-18 13:25:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583187939] [2024-11-18 13:25:39,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:39,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 13:25:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 13:25:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 13:25:39,689 INFO L87 Difference]: Start difference. First operand 482 states and 535 transitions. Second operand has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:25:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:40,453 INFO L93 Difference]: Finished difference Result 543 states and 602 transitions. [2024-11-18 13:25:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 13:25:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 0 states have call successors, (0), 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 40 [2024-11-18 13:25:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:40,455 INFO L225 Difference]: With dead ends: 543 [2024-11-18 13:25:40,455 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 13:25:40,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=3598, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 13:25:40,455 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 106 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:40,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1827 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:25:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 13:25:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 491. [2024-11-18 13:25:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.1122448979591837) internal successors, (545), 490 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 13:25:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 545 transitions. [2024-11-18 13:25:40,589 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 545 transitions. Word has length 40 [2024-11-18 13:25:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:40,589 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 545 transitions. [2024-11-18 13:25:40,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:25:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 545 transitions. [2024-11-18 13:25:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:25:40,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:40,590 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:40,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:40,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:40,791 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:40,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1171113072, now seen corresponding path program 62 times [2024-11-18 13:25:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198156783] [2024-11-18 13:25:40,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:40,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:40,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198156783] [2024-11-18 13:25:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198156783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382719514] [2024-11-18 13:25:41,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:41,130 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:41,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-18 13:25:41,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:41,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:41,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:25:41,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:41,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382719514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:41,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2024-11-18 13:25:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98376260] [2024-11-18 13:25:41,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:41,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 13:25:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 13:25:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1868, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 13:25:41,653 INFO L87 Difference]: Start difference. First operand 491 states and 545 transitions. Second operand has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:42,247 INFO L93 Difference]: Finished difference Result 509 states and 562 transitions. [2024-11-18 13:25:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 13:25:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-18 13:25:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:42,249 INFO L225 Difference]: With dead ends: 509 [2024-11-18 13:25:42,249 INFO L226 Difference]: Without dead ends: 482 [2024-11-18 13:25:42,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:25:42,250 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 81 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:42,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1343 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-18 13:25:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2024-11-18 13:25:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.1122661122661122) internal successors, (535), 481 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 13:25:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 535 transitions. [2024-11-18 13:25:42,378 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 535 transitions. Word has length 40 [2024-11-18 13:25:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:42,378 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 535 transitions. [2024-11-18 13:25:42,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 535 transitions. [2024-11-18 13:25:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:25:42,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:42,379 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:42,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-18 13:25:42,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:42,579 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:42,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 722054608, now seen corresponding path program 63 times [2024-11-18 13:25:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081823558] [2024-11-18 13:25:42,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:42,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:25:42,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081823558] [2024-11-18 13:25:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081823558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277521736] [2024-11-18 13:25:42,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:42,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:42,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:42,929 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:42,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-18 13:25:43,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:25:43,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:43,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 13:25:43,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:43,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277521736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:43,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-11-18 13:25:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020055763] [2024-11-18 13:25:43,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:43,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:25:43,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:25:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:25:43,396 INFO L87 Difference]: Start difference. First operand 482 states and 535 transitions. Second operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:43,947 INFO L93 Difference]: Finished difference Result 499 states and 551 transitions. [2024-11-18 13:25:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 13:25:43,947 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 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 40 [2024-11-18 13:25:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:43,949 INFO L225 Difference]: With dead ends: 499 [2024-11-18 13:25:43,949 INFO L226 Difference]: Without dead ends: 471 [2024-11-18 13:25:43,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 13:25:43,949 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 64 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:43,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1148 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:25:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-18 13:25:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2024-11-18 13:25:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.1127659574468085) internal successors, (523), 470 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 13:25:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 523 transitions. [2024-11-18 13:25:44,078 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 523 transitions. Word has length 40 [2024-11-18 13:25:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:44,078 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 523 transitions. [2024-11-18 13:25:44,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 523 transitions. [2024-11-18 13:25:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:25:44,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:44,079 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:44,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-18 13:25:44,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-18 13:25:44,279 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:44,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash -923927664, now seen corresponding path program 64 times [2024-11-18 13:25:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237338034] [2024-11-18 13:25:44,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:44,287 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:44,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:44,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237338034] [2024-11-18 13:25:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237338034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253970905] [2024-11-18 13:25:44,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:44,562 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:44,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-18 13:25:44,635 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:44,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:44,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:25:44,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:44,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:25:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253970905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:45,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2024-11-18 13:25:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594380551] [2024-11-18 13:25:45,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:45,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 13:25:45,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 13:25:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:25:45,068 INFO L87 Difference]: Start difference. First operand 471 states and 523 transitions. Second operand has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:45,583 INFO L93 Difference]: Finished difference Result 487 states and 538 transitions. [2024-11-18 13:25:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:25:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 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 40 [2024-11-18 13:25:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:45,585 INFO L225 Difference]: With dead ends: 487 [2024-11-18 13:25:45,585 INFO L226 Difference]: Without dead ends: 458 [2024-11-18 13:25:45,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=2891, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 13:25:45,586 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:45,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 869 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-18 13:25:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2024-11-18 13:25:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.113785557986871) internal successors, (509), 457 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 13:25:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 509 transitions. [2024-11-18 13:25:45,714 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 509 transitions. Word has length 40 [2024-11-18 13:25:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:45,714 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 509 transitions. [2024-11-18 13:25:45,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:25:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 509 transitions. [2024-11-18 13:25:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:25:45,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:45,715 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:45,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-18 13:25:45,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:45,915 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:45,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 137817552, now seen corresponding path program 65 times [2024-11-18 13:25:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255313116] [2024-11-18 13:25:45,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:45,923 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:25:45,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:25:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255313116] [2024-11-18 13:25:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255313116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827239216] [2024-11-18 13:25:46,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:46,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:46,129 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:46,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-18 13:25:46,207 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:25:46,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:46,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:25:46,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:25:46,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:25:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827239216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:46,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 22] total 43 [2024-11-18 13:25:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924657131] [2024-11-18 13:25:46,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:46,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:25:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:25:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1687, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:25:46,654 INFO L87 Difference]: Start difference. First operand 458 states and 509 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 13:25:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:47,149 INFO L93 Difference]: Finished difference Result 485 states and 539 transitions. [2024-11-18 13:25:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 13:25:47,149 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 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 40 [2024-11-18 13:25:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:47,151 INFO L225 Difference]: With dead ends: 485 [2024-11-18 13:25:47,151 INFO L226 Difference]: Without dead ends: 479 [2024-11-18 13:25:47,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=3206, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:25:47,151 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:47,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 540 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-18 13:25:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 471. [2024-11-18 13:25:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.1148936170212767) internal successors, (524), 470 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 13:25:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 524 transitions. [2024-11-18 13:25:47,285 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 524 transitions. Word has length 40 [2024-11-18 13:25:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:47,285 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 524 transitions. [2024-11-18 13:25:47,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 13:25:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 524 transitions. [2024-11-18 13:25:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 13:25:47,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:47,286 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:47,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-18 13:25:47,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-18 13:25:47,486 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:47,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -929146954, now seen corresponding path program 66 times [2024-11-18 13:25:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094586475] [2024-11-18 13:25:47,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:47,496 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 13:25:47,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094586475] [2024-11-18 13:25:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094586475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:47,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517025035] [2024-11-18 13:25:47,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:47,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:47,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:47,816 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-18 13:25:47,903 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 13:25:47,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:47,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 13:25:47,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:48,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517025035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:48,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:48,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-18 13:25:48,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61186041] [2024-11-18 13:25:48,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:48,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-18 13:25:48,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-18 13:25:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 13:25:48,912 INFO L87 Difference]: Start difference. First operand 471 states and 524 transitions. Second operand has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 13:25:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:49,870 INFO L93 Difference]: Finished difference Result 675 states and 743 transitions. [2024-11-18 13:25:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 41 [2024-11-18 13:25:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:49,872 INFO L225 Difference]: With dead ends: 675 [2024-11-18 13:25:49,872 INFO L226 Difference]: Without dead ends: 631 [2024-11-18 13:25:49,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=527, Invalid=4585, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 13:25:49,872 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:49,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 634 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:25:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-18 13:25:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 519. [2024-11-18 13:25:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.113899613899614) internal successors, (577), 518 states have internal predecessors, (577), 0 states have call successors, (0), 0 states 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 13:25:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 577 transitions. [2024-11-18 13:25:50,032 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 577 transitions. Word has length 41 [2024-11-18 13:25:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:50,032 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 577 transitions. [2024-11-18 13:25:50,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 13:25:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 577 transitions. [2024-11-18 13:25:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 13:25:50,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:50,032 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:50,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:50,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-18 13:25:50,233 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:50,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1535117609, now seen corresponding path program 67 times [2024-11-18 13:25:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255958162] [2024-11-18 13:25:50,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255958162] [2024-11-18 13:25:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255958162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612182848] [2024-11-18 13:25:50,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:25:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:50,506 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:50,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-18 13:25:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:25:50,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 13:25:50,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:51,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:25:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612182848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:51,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-18 13:25:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936600632] [2024-11-18 13:25:51,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:51,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-18 13:25:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-18 13:25:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2714, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 13:25:51,621 INFO L87 Difference]: Start difference. First operand 519 states and 577 transitions. Second operand has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 13:25:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:52,746 INFO L93 Difference]: Finished difference Result 546 states and 609 transitions. [2024-11-18 13:25:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:25:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 41 [2024-11-18 13:25:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:52,748 INFO L225 Difference]: With dead ends: 546 [2024-11-18 13:25:52,748 INFO L226 Difference]: Without dead ends: 524 [2024-11-18 13:25:52,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=314, Invalid=4656, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 13:25:52,748 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:52,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 753 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:25:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-18 13:25:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-18 13:25:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.112810707456979) internal successors, (582), 523 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 13:25:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 582 transitions. [2024-11-18 13:25:52,909 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 582 transitions. Word has length 41 [2024-11-18 13:25:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:52,909 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 582 transitions. [2024-11-18 13:25:52,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 54 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 13:25:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 582 transitions. [2024-11-18 13:25:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 13:25:52,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:52,909 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:52,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-11-18 13:25:53,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:53,110 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:53,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1578640213, now seen corresponding path program 68 times [2024-11-18 13:25:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:53,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391443197] [2024-11-18 13:25:53,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:53,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:53,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391443197] [2024-11-18 13:25:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391443197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373819462] [2024-11-18 13:25:53,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:25:53,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:53,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:53,198 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:53,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-18 13:25:53,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:25:53,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:53,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:25:53,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:53,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373819462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:53,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-11-18 13:25:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896348941] [2024-11-18 13:25:53,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:53,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 13:25:53,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 13:25:53,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:25:53,390 INFO L87 Difference]: Start difference. First operand 524 states and 582 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 13:25:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:53,697 INFO L93 Difference]: Finished difference Result 588 states and 659 transitions. [2024-11-18 13:25:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 13:25:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 41 [2024-11-18 13:25:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:53,700 INFO L225 Difference]: With dead ends: 588 [2024-11-18 13:25:53,700 INFO L226 Difference]: Without dead ends: 572 [2024-11-18 13:25:53,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:25:53,700 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:53,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 177 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-18 13:25:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 558. [2024-11-18 13:25:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 1.125673249551167) internal successors, (627), 557 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 13:25:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 627 transitions. [2024-11-18 13:25:53,871 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 627 transitions. Word has length 41 [2024-11-18 13:25:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:53,871 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 627 transitions. [2024-11-18 13:25:53,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 13:25:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 627 transitions. [2024-11-18 13:25:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 13:25:53,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:53,872 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:53,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-18 13:25:54,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:54,072 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 888112408, now seen corresponding path program 69 times [2024-11-18 13:25:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427338219] [2024-11-18 13:25:54,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:54,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:54,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:25:54,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427338219] [2024-11-18 13:25:54,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427338219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578329589] [2024-11-18 13:25:54,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:25:54,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:54,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:54,165 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:54,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-18 13:25:54,242 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:25:54,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:54,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:25:54,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:54,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:25:54,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578329589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:54,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:54,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-11-18 13:25:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772815914] [2024-11-18 13:25:54,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:54,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 13:25:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 13:25:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:25:54,367 INFO L87 Difference]: Start difference. First operand 558 states and 627 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 13:25:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:54,697 INFO L93 Difference]: Finished difference Result 802 states and 924 transitions. [2024-11-18 13:25:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 13:25:54,698 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 41 [2024-11-18 13:25:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:54,699 INFO L225 Difference]: With dead ends: 802 [2024-11-18 13:25:54,699 INFO L226 Difference]: Without dead ends: 640 [2024-11-18 13:25:54,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:25:54,700 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:54,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 187 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:25:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-18 13:25:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-18 13:25:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.1267605633802817) internal successors, (720), 639 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 13:25:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 720 transitions. [2024-11-18 13:25:54,901 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 720 transitions. Word has length 41 [2024-11-18 13:25:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:54,901 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 720 transitions. [2024-11-18 13:25:54,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 13:25:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 720 transitions. [2024-11-18 13:25:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:25:54,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:54,902 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:54,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-18 13:25:55,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-18 13:25:55,103 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:55,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 318631823, now seen corresponding path program 70 times [2024-11-18 13:25:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96787401] [2024-11-18 13:25:55,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:55,114 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:55,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96787401] [2024-11-18 13:25:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96787401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091470597] [2024-11-18 13:25:55,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:25:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:55,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:55,480 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:55,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-18 13:25:55,560 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:25:55,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:55,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-18 13:25:55,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:55,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:25:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091470597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:56,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-11-18 13:25:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286862769] [2024-11-18 13:25:56,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:56,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 13:25:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 13:25:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2237, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:25:56,006 INFO L87 Difference]: Start difference. First operand 640 states and 720 transitions. Second operand has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:25:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:56,845 INFO L93 Difference]: Finished difference Result 710 states and 797 transitions. [2024-11-18 13:25:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 13:25:56,846 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:25:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:56,848 INFO L225 Difference]: With dead ends: 710 [2024-11-18 13:25:56,848 INFO L226 Difference]: Without dead ends: 701 [2024-11-18 13:25:56,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=3970, Unknown=0, NotChecked=0, Total=4160 [2024-11-18 13:25:56,848 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 120 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:56,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1788 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:25:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-18 13:25:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 649. [2024-11-18 13:25:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.126543209876543) internal successors, (730), 648 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 13:25:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 730 transitions. [2024-11-18 13:25:57,056 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 730 transitions. Word has length 42 [2024-11-18 13:25:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:57,056 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 730 transitions. [2024-11-18 13:25:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:25:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 730 transitions. [2024-11-18 13:25:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:25:57,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:57,057 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:57,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-18 13:25:57,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-18 13:25:57,257 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:57,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -225136977, now seen corresponding path program 71 times [2024-11-18 13:25:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229053013] [2024-11-18 13:25:57,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:57,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:25:57,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229053013] [2024-11-18 13:25:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229053013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130293862] [2024-11-18 13:25:57,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:25:57,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:57,600 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:57,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-18 13:25:57,679 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:25:57,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:57,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-18 13:25:57,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:25:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:58,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:25:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:25:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130293862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:25:58,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:25:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2024-11-18 13:25:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109510285] [2024-11-18 13:25:58,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:25:58,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 13:25:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:25:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 13:25:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2048, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 13:25:58,110 INFO L87 Difference]: Start difference. First operand 649 states and 730 transitions. Second operand has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:25:58,902 INFO L93 Difference]: Finished difference Result 668 states and 748 transitions. [2024-11-18 13:25:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 13:25:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:25:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:25:58,904 INFO L225 Difference]: With dead ends: 668 [2024-11-18 13:25:58,904 INFO L226 Difference]: Without dead ends: 640 [2024-11-18 13:25:58,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=3594, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 13:25:58,904 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 92 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:25:58,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1694 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:25:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-18 13:25:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-18 13:25:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.1267605633802817) internal successors, (720), 639 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 13:25:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 720 transitions. [2024-11-18 13:25:59,103 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 720 transitions. Word has length 42 [2024-11-18 13:25:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:25:59,103 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 720 transitions. [2024-11-18 13:25:59,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:25:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 720 transitions. [2024-11-18 13:25:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:25:59,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:25:59,104 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:25:59,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-18 13:25:59,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:59,304 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:25:59,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:25:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -284040433, now seen corresponding path program 72 times [2024-11-18 13:25:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:25:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389411895] [2024-11-18 13:25:59,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:25:59,314 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:59,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:25:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:25:59,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389411895] [2024-11-18 13:25:59,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389411895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:25:59,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580787931] [2024-11-18 13:25:59,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:25:59,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:25:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:25:59,688 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:25:59,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-18 13:25:59,766 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:25:59,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:25:59,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:25:59,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:26:00,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:26:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580787931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:00,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2024-11-18 13:26:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919999652] [2024-11-18 13:26:00,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:00,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-18 13:26:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-18 13:26:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:26:00,200 INFO L87 Difference]: Start difference. First operand 640 states and 720 transitions. Second operand has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:26:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:00,869 INFO L93 Difference]: Finished difference Result 658 states and 737 transitions. [2024-11-18 13:26:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 13:26:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:26:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:00,871 INFO L225 Difference]: With dead ends: 658 [2024-11-18 13:26:00,871 INFO L226 Difference]: Without dead ends: 629 [2024-11-18 13:26:00,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=3349, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 13:26:00,871 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 72 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:00,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1296 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:26:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-18 13:26:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2024-11-18 13:26:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 1.127388535031847) internal successors, (708), 628 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 13:26:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 708 transitions. [2024-11-18 13:26:01,071 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 708 transitions. Word has length 42 [2024-11-18 13:26:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:01,071 INFO L471 AbstractCegarLoop]: Abstraction has 629 states and 708 transitions. [2024-11-18 13:26:01,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:26:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 708 transitions. [2024-11-18 13:26:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:26:01,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:01,072 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:01,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-18 13:26:01,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:01,273 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:01,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2122368209, now seen corresponding path program 73 times [2024-11-18 13:26:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11859279] [2024-11-18 13:26:01,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:26:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:26:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:26:01,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:01,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11859279] [2024-11-18 13:26:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11859279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:01,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891651747] [2024-11-18 13:26:01,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:26:01,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:01,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:01,546 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:01,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-18 13:26:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:26:01,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 13:26:01,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:26:01,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:26:02,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891651747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:02,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:02,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-11-18 13:26:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881503387] [2024-11-18 13:26:02,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:02,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 13:26:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 13:26:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:26:02,048 INFO L87 Difference]: Start difference. First operand 629 states and 708 transitions. Second operand has 44 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:26:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:02,646 INFO L93 Difference]: Finished difference Result 646 states and 724 transitions. [2024-11-18 13:26:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 13:26:02,646 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:26:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:02,648 INFO L225 Difference]: With dead ends: 646 [2024-11-18 13:26:02,648 INFO L226 Difference]: Without dead ends: 616 [2024-11-18 13:26:02,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 13:26:02,648 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 57 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:02,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 798 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:26:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-18 13:26:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-11-18 13:26:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.1284552845528455) internal successors, (694), 615 states have internal predecessors, (694), 0 states have call successors, (0), 0 states 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 13:26:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 694 transitions. [2024-11-18 13:26:02,841 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 694 transitions. Word has length 42 [2024-11-18 13:26:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:02,841 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 694 transitions. [2024-11-18 13:26:02,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:26:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 694 transitions. [2024-11-18 13:26:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:26:02,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:02,841 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:02,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-11-18 13:26:03,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-11-18 13:26:03,042 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:03,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -147720610, now seen corresponding path program 74 times [2024-11-18 13:26:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277152017] [2024-11-18 13:26:03,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:26:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:03,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:26:03,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 13:26:03,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:03,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277152017] [2024-11-18 13:26:03,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277152017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:03,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982920986] [2024-11-18 13:26:03,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:26:03,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:03,198 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:03,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-18 13:26:03,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:26:03,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:03,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:26:03,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:26:03,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:26:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982920986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:03,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-11-18 13:26:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072502439] [2024-11-18 13:26:03,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:03,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 13:26:03,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:03,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 13:26:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:26:03,701 INFO L87 Difference]: Start difference. First operand 616 states and 694 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 13:26:04,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:04,218 INFO L93 Difference]: Finished difference Result 744 states and 842 transitions. [2024-11-18 13:26:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:26:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:26:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:04,220 INFO L225 Difference]: With dead ends: 744 [2024-11-18 13:26:04,220 INFO L226 Difference]: Without dead ends: 681 [2024-11-18 13:26:04,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=1819, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:26:04,222 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:04,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 419 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:26:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-18 13:26:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2024-11-18 13:26:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.1147058823529412) internal successors, (758), 680 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 13:26:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 758 transitions. [2024-11-18 13:26:04,430 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 758 transitions. Word has length 42 [2024-11-18 13:26:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:04,430 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 758 transitions. [2024-11-18 13:26:04,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 13:26:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 758 transitions. [2024-11-18 13:26:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:26:04,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:04,431 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:04,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-11-18 13:26:04,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:04,631 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:04,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1018615439, now seen corresponding path program 75 times [2024-11-18 13:26:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241615768] [2024-11-18 13:26:04,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:26:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:04,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:26:04,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:26:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241615768] [2024-11-18 13:26:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241615768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629095914] [2024-11-18 13:26:04,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:26:04,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:04,944 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:04,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-18 13:26:05,035 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:26:05,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:05,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:26:05,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:26:05,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:26:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629095914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:05,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:05,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2024-11-18 13:26:05,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508394140] [2024-11-18 13:26:05,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:05,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 13:26:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 13:26:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:26:05,508 INFO L87 Difference]: Start difference. First operand 681 states and 758 transitions. Second operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 13:26:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:06,073 INFO L93 Difference]: Finished difference Result 720 states and 801 transitions. [2024-11-18 13:26:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:26:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:26:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:06,075 INFO L225 Difference]: With dead ends: 720 [2024-11-18 13:26:06,075 INFO L226 Difference]: Without dead ends: 689 [2024-11-18 13:26:06,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=2675, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 13:26:06,076 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:06,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 742 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:26:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-18 13:26:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2024-11-18 13:26:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.1168639053254439) internal successors, (755), 676 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 13:26:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 755 transitions. [2024-11-18 13:26:06,290 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 755 transitions. Word has length 42 [2024-11-18 13:26:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:06,290 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 755 transitions. [2024-11-18 13:26:06,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 13:26:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 755 transitions. [2024-11-18 13:26:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:26:06,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:06,291 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:06,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-11-18 13:26:06,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:06,494 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:06,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1114544290, now seen corresponding path program 76 times [2024-11-18 13:26:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:06,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203709934] [2024-11-18 13:26:06,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:26:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:06,502 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:26:06,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:26:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203709934] [2024-11-18 13:26:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203709934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114822259] [2024-11-18 13:26:06,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:26:06,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:06,641 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:06,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-18 13:26:06,719 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:26:06,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:06,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:26:06,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:26:06,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:26:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114822259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:07,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:07,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2024-11-18 13:26:07,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441062662] [2024-11-18 13:26:07,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:07,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 13:26:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:07,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 13:26:07,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 13:26:07,086 INFO L87 Difference]: Start difference. First operand 677 states and 755 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:26:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:07,568 INFO L93 Difference]: Finished difference Result 711 states and 789 transitions. [2024-11-18 13:26:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:26:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:26:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:07,571 INFO L225 Difference]: With dead ends: 711 [2024-11-18 13:26:07,571 INFO L226 Difference]: Without dead ends: 677 [2024-11-18 13:26:07,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:26:07,571 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:07,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:26:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-18 13:26:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-11-18 13:26:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.1020710059171597) internal successors, (745), 676 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 13:26:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 745 transitions. [2024-11-18 13:26:07,786 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 745 transitions. Word has length 42 [2024-11-18 13:26:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:07,786 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 745 transitions. [2024-11-18 13:26:07,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:26:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 745 transitions. [2024-11-18 13:26:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 13:26:07,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:07,787 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:07,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-11-18 13:26:07,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:07,988 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:07,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1950289367, now seen corresponding path program 77 times [2024-11-18 13:26:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982774144] [2024-11-18 13:26:07,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:26:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:07,998 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 13:26:07,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:08,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982774144] [2024-11-18 13:26:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982774144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:08,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126009352] [2024-11-18 13:26:08,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:26:08,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:08,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:08,273 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:08,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-18 13:26:08,359 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 13:26:08,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:08,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 13:26:08,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:08,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126009352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:09,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:09,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 58 [2024-11-18 13:26:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400964064] [2024-11-18 13:26:09,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:09,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-18 13:26:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-18 13:26:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3138, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 13:26:09,453 INFO L87 Difference]: Start difference. First operand 677 states and 745 transitions. Second operand has 58 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:26:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:26:10,466 INFO L93 Difference]: Finished difference Result 973 states and 1059 transitions. [2024-11-18 13:26:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:26:10,467 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-18 13:26:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:26:10,469 INFO L225 Difference]: With dead ends: 973 [2024-11-18 13:26:10,469 INFO L226 Difference]: Without dead ends: 925 [2024-11-18 13:26:10,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 42 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=623, Invalid=5383, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 13:26:10,470 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:26:10,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 608 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:26:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-18 13:26:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 743. [2024-11-18 13:26:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.101078167115903) internal successors, (817), 742 states have internal predecessors, (817), 0 states have call successors, (0), 0 states 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 13:26:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 817 transitions. [2024-11-18 13:26:10,715 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 817 transitions. Word has length 43 [2024-11-18 13:26:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:26:10,715 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 817 transitions. [2024-11-18 13:26:10,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:26:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 817 transitions. [2024-11-18 13:26:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 13:26:10,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:26:10,716 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:26:10,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-11-18 13:26:10,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-11-18 13:26:10,917 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:26:10,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:26:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash 345068246, now seen corresponding path program 78 times [2024-11-18 13:26:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:26:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160695826] [2024-11-18 13:26:10,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:26:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:26:10,930 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 13:26:10,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:26:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160695826] [2024-11-18 13:26:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160695826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:26:11,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2232063] [2024-11-18 13:26:11,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:26:11,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:26:11,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:26:11,278 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:26:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-18 13:26:11,361 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 13:26:11,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:26:11,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 13:26:11,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:26:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:11,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:26:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:26:12,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2232063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:26:12,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:26:12,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-11-18 13:26:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330641275] [2024-11-18 13:26:12,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:26:12,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-18 13:26:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:26:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-18 13:26:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:26:12,438 INFO L87 Difference]: Start difference. First operand 743 states and 817 transitions. Second operand has 59 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 59 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)