./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 23:38:07,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 23:38:07,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 23:38:07,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 23:38:07,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 23:38:07,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 23:38:07,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 23:38:07,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 23:38:07,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 23:38:07,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 23:38:07,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 23:38:07,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 23:38:07,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 23:38:07,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 23:38:07,810 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 23:38:07,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 23:38:07,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 23:38:07,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 23:38:07,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 23:38:07,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 23:38:07,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 23:38:07,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 23:38:07,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 23:38:07,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 23:38:07,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 23:38:07,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 23:38:07,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 23:38:07,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 23:38:07,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 23:38:07,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:38:07,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 23:38:07,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 23:38:07,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 23:38:07,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 23:38:07,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 23:38:07,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 23:38:07,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 23:38:07,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 23:38:07,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 23:38:07,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 [2024-10-12 23:38:08,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 23:38:08,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 23:38:08,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 23:38:08,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 23:38:08,097 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 23:38:08,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-10-12 23:38:09,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 23:38:09,763 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 23:38:09,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-10-12 23:38:09,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8129ac8f0/729bbed3b6df492f9337e7704845449d/FLAGf58a239f8 [2024-10-12 23:38:09,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8129ac8f0/729bbed3b6df492f9337e7704845449d [2024-10-12 23:38:09,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 23:38:09,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 23:38:09,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 23:38:09,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 23:38:09,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 23:38:09,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:38:09" (1/1) ... [2024-10-12 23:38:09,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3f9c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:09, skipping insertion in model container [2024-10-12 23:38:09,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:38:09" (1/1) ... [2024-10-12 23:38:09,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 23:38:09,958 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-10-12 23:38:09,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:38:10,006 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 23:38:10,020 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-10-12 23:38:10,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:38:10,071 INFO L204 MainTranslator]: Completed translation [2024-10-12 23:38:10,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10 WrapperNode [2024-10-12 23:38:10,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 23:38:10,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 23:38:10,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 23:38:10,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 23:38:10,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,128 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 167 [2024-10-12 23:38:10,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 23:38:10,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 23:38:10,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 23:38:10,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 23:38:10,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,178 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]. [2024-10-12 23:38:10,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 23:38:10,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 23:38:10,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 23:38:10,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 23:38:10,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (1/1) ... [2024-10-12 23:38:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:38:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:10,238 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) [2024-10-12 23:38:10,241 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 [2024-10-12 23:38:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 23:38:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 23:38:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 23:38:10,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 23:38:10,355 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 23:38:10,357 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 23:38:10,857 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-10-12 23:38:10,858 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 23:38:10,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 23:38:10,893 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 23:38:10,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:38:10 BoogieIcfgContainer [2024-10-12 23:38:10,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 23:38:10,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 23:38:10,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 23:38:10,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 23:38:10,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:38:09" (1/3) ... [2024-10-12 23:38:10,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f17c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:38:10, skipping insertion in model container [2024-10-12 23:38:10,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:38:10" (2/3) ... [2024-10-12 23:38:10,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f17c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:38:10, skipping insertion in model container [2024-10-12 23:38:10,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:38:10" (3/3) ... [2024-10-12 23:38:10,905 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2024-10-12 23:38:10,921 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 23:38:10,921 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 23:38:10,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 23:38:10,988 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;@193dbda3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 23:38:10,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 23:38:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 23:38:11,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:11,004 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] [2024-10-12 23:38:11,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:11,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1935645965, now seen corresponding path program 1 times [2024-10-12 23:38:11,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:11,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157534671] [2024-10-12 23:38:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157534671] [2024-10-12 23:38:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157534671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:11,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:11,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 23:38:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421652434] [2024-10-12 23:38:11,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:11,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 23:38:11,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 23:38:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 23:38:11,262 INFO L87 Difference]: Start difference. First operand has 49 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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) [2024-10-12 23:38:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:11,287 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2024-10-12 23:38:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 23:38:11,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 [2024-10-12 23:38:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:11,298 INFO L225 Difference]: With dead ends: 88 [2024-10-12 23:38:11,298 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 23:38:11,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 23:38:11,304 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:11,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:38:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 23:38:11,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 23:38:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2024-10-12 23:38:11,337 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 22 [2024-10-12 23:38:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:11,339 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2024-10-12 23:38:11,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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) [2024-10-12 23:38:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2024-10-12 23:38:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 23:38:11,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:11,341 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] [2024-10-12 23:38:11,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 23:38:11,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:11,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1126299339, now seen corresponding path program 1 times [2024-10-12 23:38:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:11,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515624044] [2024-10-12 23:38:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:11,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:11,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515624044] [2024-10-12 23:38:11,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515624044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:11,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:11,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:11,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84092692] [2024-10-12 23:38:11,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:11,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:38:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:38:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:11,733 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.4) 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) [2024-10-12 23:38:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:11,836 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-10-12 23:38:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:38:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) 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 [2024-10-12 23:38:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:11,839 INFO L225 Difference]: With dead ends: 91 [2024-10-12 23:38:11,839 INFO L226 Difference]: Without dead ends: 52 [2024-10-12 23:38:11,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:11,841 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:11,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 134 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-12 23:38:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-10-12 23:38:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2024-10-12 23:38:11,850 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 22 [2024-10-12 23:38:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:11,850 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2024-10-12 23:38:11,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) 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) [2024-10-12 23:38:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2024-10-12 23:38:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 23:38:11,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:11,853 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] [2024-10-12 23:38:11,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 23:38:11,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:11,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash 689153863, now seen corresponding path program 1 times [2024-10-12 23:38:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124601215] [2024-10-12 23:38:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124601215] [2024-10-12 23:38:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124601215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:12,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143485272] [2024-10-12 23:38:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:12,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:38:12,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:38:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:38:12,050 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2024-10-12 23:38:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:12,086 INFO L93 Difference]: Finished difference Result 95 states and 132 transitions. [2024-10-12 23:38:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:38:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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 [2024-10-12 23:38:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:12,090 INFO L225 Difference]: With dead ends: 95 [2024-10-12 23:38:12,090 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 23:38:12,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:38:12,092 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:12,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:38:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 23:38:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-12 23:38:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-10-12 23:38:12,104 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 23 [2024-10-12 23:38:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:12,104 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-10-12 23:38:12,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2024-10-12 23:38:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-10-12 23:38:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 23:38:12,105 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:12,105 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] [2024-10-12 23:38:12,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 23:38:12,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:12,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -917471032, now seen corresponding path program 1 times [2024-10-12 23:38:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155909094] [2024-10-12 23:38:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:12,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:12,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155909094] [2024-10-12 23:38:12,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155909094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:12,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:12,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37900904] [2024-10-12 23:38:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:12,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:38:12,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:38:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:38:12,292 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2024-10-12 23:38:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:12,322 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2024-10-12 23:38:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:38:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-12 23:38:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:12,324 INFO L225 Difference]: With dead ends: 57 [2024-10-12 23:38:12,324 INFO L226 Difference]: Without dead ends: 55 [2024-10-12 23:38:12,325 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 [2024-10-12 23:38:12,325 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:12,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:38:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-12 23:38:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-10-12 23:38:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 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) [2024-10-12 23:38:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2024-10-12 23:38:12,331 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 24 [2024-10-12 23:38:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:12,332 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-10-12 23:38:12,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2024-10-12 23:38:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2024-10-12 23:38:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 23:38:12,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:12,333 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, 1] [2024-10-12 23:38:12,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 23:38:12,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:12,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1624864344, now seen corresponding path program 1 times [2024-10-12 23:38:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:12,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182505083] [2024-10-12 23:38:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:12,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182505083] [2024-10-12 23:38:12,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182505083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:12,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:12,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506159404] [2024-10-12 23:38:12,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:38:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:12,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:38:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:38:12,434 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:12,464 INFO L93 Difference]: Finished difference Result 103 states and 140 transitions. [2024-10-12 23:38:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:38:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-12 23:38:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:12,466 INFO L225 Difference]: With dead ends: 103 [2024-10-12 23:38:12,466 INFO L226 Difference]: Without dead ends: 57 [2024-10-12 23:38:12,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:38:12,467 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:12,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:38:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-12 23:38:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-12 23:38:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-12 23:38:12,474 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 25 [2024-10-12 23:38:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:12,475 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-12 23:38:12,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-12 23:38:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 23:38:12,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:12,477 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, 1, 1] [2024-10-12 23:38:12,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 23:38:12,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:12,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2028188577, now seen corresponding path program 1 times [2024-10-12 23:38:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977769426] [2024-10-12 23:38:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:12,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977769426] [2024-10-12 23:38:12,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977769426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:12,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:12,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 23:38:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685017765] [2024-10-12 23:38:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:12,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 23:38:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 23:38:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:38:12,804 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:12,873 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2024-10-12 23:38:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:38:12,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-10-12 23:38:12,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:12,875 INFO L225 Difference]: With dead ends: 135 [2024-10-12 23:38:12,875 INFO L226 Difference]: Without dead ends: 87 [2024-10-12 23:38:12,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:12,876 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 37 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:12,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 206 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:38:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-12 23:38:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2024-10-12 23:38:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-10-12 23:38:12,890 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 26 [2024-10-12 23:38:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:12,890 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-10-12 23:38:12,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-10-12 23:38:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-12 23:38:12,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:12,895 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:12,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 23:38:12,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:12,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 700759450, now seen corresponding path program 1 times [2024-10-12 23:38:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:12,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424098188] [2024-10-12 23:38:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:13,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424098188] [2024-10-12 23:38:13,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424098188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046609558] [2024-10-12 23:38:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:13,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:13,385 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) [2024-10-12 23:38:13,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 23:38:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:13,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-12 23:38:13,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:13,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046609558] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:14,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:14,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2024-10-12 23:38:14,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800579206] [2024-10-12 23:38:14,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:14,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 23:38:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 23:38:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-10-12 23:38:14,294 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:14,737 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2024-10-12 23:38:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 23:38:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-12 23:38:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:14,739 INFO L225 Difference]: With dead ends: 175 [2024-10-12 23:38:14,740 INFO L226 Difference]: Without dead ends: 127 [2024-10-12 23:38:14,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2024-10-12 23:38:14,742 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 326 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:14,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 358 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 23:38:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-12 23:38:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 87. [2024-10-12 23:38:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 86 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2024-10-12 23:38:14,752 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 49 [2024-10-12 23:38:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:14,752 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2024-10-12 23:38:14,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2024-10-12 23:38:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 23:38:14,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:14,760 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:14,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 23:38:14,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:14,965 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:14,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 110675563, now seen corresponding path program 1 times [2024-10-12 23:38:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:14,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537667525] [2024-10-12 23:38:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537667525] [2024-10-12 23:38:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537667525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054998651] [2024-10-12 23:38:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:15,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:15,365 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) [2024-10-12 23:38:15,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 23:38:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:15,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-12 23:38:15,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:15,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054998651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:16,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 18 [2024-10-12 23:38:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420668992] [2024-10-12 23:38:16,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:16,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 23:38:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 23:38:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-10-12 23:38:16,054 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:16,413 INFO L93 Difference]: Finished difference Result 257 states and 340 transitions. [2024-10-12 23:38:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:38:16,414 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 23:38:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:16,415 INFO L225 Difference]: With dead ends: 257 [2024-10-12 23:38:16,416 INFO L226 Difference]: Without dead ends: 179 [2024-10-12 23:38:16,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2024-10-12 23:38:16,417 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 342 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:16,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 238 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:38:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-12 23:38:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 87. [2024-10-12 23:38:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 86 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2024-10-12 23:38:16,424 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 50 [2024-10-12 23:38:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:16,425 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2024-10-12 23:38:16,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2024-10-12 23:38:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 23:38:16,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:16,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:16,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 23:38:16,630 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,SelfDestructingSolverStorable7 [2024-10-12 23:38:16,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:16,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1266386143, now seen corresponding path program 1 times [2024-10-12 23:38:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:16,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601237728] [2024-10-12 23:38:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:16,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:16,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601237728] [2024-10-12 23:38:16,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601237728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:16,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:16,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:38:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785996683] [2024-10-12 23:38:16,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:16,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:38:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:38:16,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:16,945 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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) [2024-10-12 23:38:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:17,027 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2024-10-12 23:38:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:38:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 51 [2024-10-12 23:38:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:17,029 INFO L225 Difference]: With dead ends: 222 [2024-10-12 23:38:17,029 INFO L226 Difference]: Without dead ends: 144 [2024-10-12 23:38:17,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:17,030 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:17,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 225 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-12 23:38:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2024-10-12 23:38:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 115 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 153 transitions. [2024-10-12 23:38:17,043 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 153 transitions. Word has length 51 [2024-10-12 23:38:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:17,044 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 153 transitions. [2024-10-12 23:38:17,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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) [2024-10-12 23:38:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 153 transitions. [2024-10-12 23:38:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 23:38:17,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:17,054 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:17,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 23:38:17,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:17,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash -701445481, now seen corresponding path program 1 times [2024-10-12 23:38:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136245821] [2024-10-12 23:38:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:17,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136245821] [2024-10-12 23:38:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136245821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:38:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671367482] [2024-10-12 23:38:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:17,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:38:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:38:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:17,341 INFO L87 Difference]: Start difference. First operand 116 states and 153 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:17,443 INFO L93 Difference]: Finished difference Result 261 states and 337 transitions. [2024-10-12 23:38:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:38:17,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 23:38:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:17,445 INFO L225 Difference]: With dead ends: 261 [2024-10-12 23:38:17,446 INFO L226 Difference]: Without dead ends: 183 [2024-10-12 23:38:17,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:17,447 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 44 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:17,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 249 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-10-12 23:38:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 154. [2024-10-12 23:38:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.2745098039215685) internal successors, (195), 153 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 195 transitions. [2024-10-12 23:38:17,458 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 195 transitions. Word has length 52 [2024-10-12 23:38:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:17,460 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 195 transitions. [2024-10-12 23:38:17,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 195 transitions. [2024-10-12 23:38:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 23:38:17,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:17,461 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:17,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 23:38:17,461 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:17,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash -664325189, now seen corresponding path program 1 times [2024-10-12 23:38:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:17,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945330672] [2024-10-12 23:38:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:17,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945330672] [2024-10-12 23:38:17,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945330672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655132584] [2024-10-12 23:38:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:17,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:17,885 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) [2024-10-12 23:38:17,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 23:38:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:17,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-12 23:38:18,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 23:38:18,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 23:38:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655132584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 23:38:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2024-10-12 23:38:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619072535] [2024-10-12 23:38:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:18,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:38:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:38:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-12 23:38:18,334 INFO L87 Difference]: Start difference. First operand 154 states and 195 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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) [2024-10-12 23:38:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:18,627 INFO L93 Difference]: Finished difference Result 297 states and 377 transitions. [2024-10-12 23:38:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:38:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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 52 [2024-10-12 23:38:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:18,629 INFO L225 Difference]: With dead ends: 297 [2024-10-12 23:38:18,629 INFO L226 Difference]: Without dead ends: 219 [2024-10-12 23:38:18,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-12 23:38:18,630 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:18,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 184 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 23:38:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-12 23:38:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 161. [2024-10-12 23:38:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.2875) internal successors, (206), 160 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 206 transitions. [2024-10-12 23:38:18,635 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 206 transitions. Word has length 52 [2024-10-12 23:38:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:18,636 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 206 transitions. [2024-10-12 23:38:18,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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) [2024-10-12 23:38:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 206 transitions. [2024-10-12 23:38:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 23:38:18,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:18,636 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:18,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 23:38:18,837 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 [2024-10-12 23:38:18,837 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:18,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -987212856, now seen corresponding path program 1 times [2024-10-12 23:38:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675479064] [2024-10-12 23:38:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 23:38:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:19,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675479064] [2024-10-12 23:38:19,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675479064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:19,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:19,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:38:19,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573074005] [2024-10-12 23:38:19,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:19,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:38:19,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:38:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:19,104 INFO L87 Difference]: Start difference. First operand 161 states and 206 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-10-12 23:38:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:19,254 INFO L93 Difference]: Finished difference Result 322 states and 415 transitions. [2024-10-12 23:38:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:38:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 53 [2024-10-12 23:38:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:19,255 INFO L225 Difference]: With dead ends: 322 [2024-10-12 23:38:19,256 INFO L226 Difference]: Without dead ends: 244 [2024-10-12 23:38:19,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:38:19,256 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 41 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:19,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 382 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-10-12 23:38:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 173. [2024-10-12 23:38:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.2906976744186047) internal successors, (222), 172 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2024-10-12 23:38:19,262 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 53 [2024-10-12 23:38:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:19,262 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2024-10-12 23:38:19,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-10-12 23:38:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2024-10-12 23:38:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 23:38:19,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:19,263 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:19,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 23:38:19,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:19,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash -275817944, now seen corresponding path program 1 times [2024-10-12 23:38:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:19,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029469726] [2024-10-12 23:38:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 23:38:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:19,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029469726] [2024-10-12 23:38:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029469726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:19,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:19,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:38:19,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304587222] [2024-10-12 23:38:19,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:19,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:38:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:38:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:19,514 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 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) [2024-10-12 23:38:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:19,607 INFO L93 Difference]: Finished difference Result 299 states and 391 transitions. [2024-10-12 23:38:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:38:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 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 53 [2024-10-12 23:38:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:19,609 INFO L225 Difference]: With dead ends: 299 [2024-10-12 23:38:19,609 INFO L226 Difference]: Without dead ends: 201 [2024-10-12 23:38:19,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:38:19,610 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:19,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 204 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-12 23:38:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 183. [2024-10-12 23:38:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3076923076923077) internal successors, (238), 182 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2024-10-12 23:38:19,614 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 53 [2024-10-12 23:38:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:19,615 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2024-10-12 23:38:19,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 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) [2024-10-12 23:38:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2024-10-12 23:38:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 23:38:19,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:19,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:19,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 23:38:19,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:19,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1918162850, now seen corresponding path program 1 times [2024-10-12 23:38:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191043642] [2024-10-12 23:38:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:19,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:19,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191043642] [2024-10-12 23:38:19,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191043642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:19,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:19,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:19,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506979751] [2024-10-12 23:38:19,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:19,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:38:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:38:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:19,903 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-10-12 23:38:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:19,968 INFO L93 Difference]: Finished difference Result 318 states and 420 transitions. [2024-10-12 23:38:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:38:19,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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 54 [2024-10-12 23:38:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:19,970 INFO L225 Difference]: With dead ends: 318 [2024-10-12 23:38:19,970 INFO L226 Difference]: Without dead ends: 222 [2024-10-12 23:38:19,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:19,971 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:19,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 170 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-10-12 23:38:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2024-10-12 23:38:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 219 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 286 transitions. [2024-10-12 23:38:19,977 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 286 transitions. Word has length 54 [2024-10-12 23:38:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:19,979 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 286 transitions. [2024-10-12 23:38:19,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-10-12 23:38:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 286 transitions. [2024-10-12 23:38:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 23:38:19,980 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:19,980 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:19,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 23:38:19,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:19,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash -296541359, now seen corresponding path program 1 times [2024-10-12 23:38:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413381854] [2024-10-12 23:38:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:20,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:20,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413381854] [2024-10-12 23:38:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413381854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:20,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:20,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:38:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664006509] [2024-10-12 23:38:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:20,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:38:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:38:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:20,324 INFO L87 Difference]: Start difference. First operand 220 states and 286 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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) [2024-10-12 23:38:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:20,391 INFO L93 Difference]: Finished difference Result 321 states and 422 transitions. [2024-10-12 23:38:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:38:20,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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 55 [2024-10-12 23:38:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:20,393 INFO L225 Difference]: With dead ends: 321 [2024-10-12 23:38:20,394 INFO L226 Difference]: Without dead ends: 220 [2024-10-12 23:38:20,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:38:20,394 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 20 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:20,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-12 23:38:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-10-12 23:38:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.2968036529680365) internal successors, (284), 219 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 284 transitions. [2024-10-12 23:38:20,405 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 284 transitions. Word has length 55 [2024-10-12 23:38:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:20,405 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 284 transitions. [2024-10-12 23:38:20,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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) [2024-10-12 23:38:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 284 transitions. [2024-10-12 23:38:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 23:38:20,406 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:20,406 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:20,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 23:38:20,407 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:20,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2138416829, now seen corresponding path program 1 times [2024-10-12 23:38:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687286346] [2024-10-12 23:38:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687286346] [2024-10-12 23:38:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687286346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505712516] [2024-10-12 23:38:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:21,078 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) [2024-10-12 23:38:21,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 23:38:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:21,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-12 23:38:21,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:22,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505712516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:25,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 38 [2024-10-12 23:38:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571498329] [2024-10-12 23:38:25,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:25,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 23:38:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 23:38:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 23:38:25,019 INFO L87 Difference]: Start difference. First operand 220 states and 284 transitions. Second operand has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:27,009 INFO L93 Difference]: Finished difference Result 516 states and 671 transitions. [2024-10-12 23:38:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-12 23:38:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 23:38:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:27,013 INFO L225 Difference]: With dead ends: 516 [2024-10-12 23:38:27,013 INFO L226 Difference]: Without dead ends: 420 [2024-10-12 23:38:27,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=619, Invalid=4493, Unknown=0, NotChecked=0, Total=5112 [2024-10-12 23:38:27,016 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 215 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:27,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 576 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 23:38:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-12 23:38:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 249. [2024-10-12 23:38:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2620967741935485) internal successors, (313), 248 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 313 transitions. [2024-10-12 23:38:27,023 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 313 transitions. Word has length 56 [2024-10-12 23:38:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:27,024 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 313 transitions. [2024-10-12 23:38:27,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 313 transitions. [2024-10-12 23:38:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 23:38:27,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:27,027 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:27,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 23:38:27,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 23:38:27,233 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:27,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2096010424, now seen corresponding path program 1 times [2024-10-12 23:38:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248769244] [2024-10-12 23:38:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248769244] [2024-10-12 23:38:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248769244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:38:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277015272] [2024-10-12 23:38:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:27,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:38:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:38:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:38:27,625 INFO L87 Difference]: Start difference. First operand 249 states and 313 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 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) [2024-10-12 23:38:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:27,747 INFO L93 Difference]: Finished difference Result 424 states and 544 transitions. [2024-10-12 23:38:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:38:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 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 74 [2024-10-12 23:38:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:27,749 INFO L225 Difference]: With dead ends: 424 [2024-10-12 23:38:27,749 INFO L226 Difference]: Without dead ends: 328 [2024-10-12 23:38:27,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:38:27,750 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 97 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:27,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 424 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-12 23:38:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 291. [2024-10-12 23:38:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.2586206896551724) internal successors, (365), 290 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 365 transitions. [2024-10-12 23:38:27,756 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 365 transitions. Word has length 74 [2024-10-12 23:38:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:27,756 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 365 transitions. [2024-10-12 23:38:27,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 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) [2024-10-12 23:38:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 365 transitions. [2024-10-12 23:38:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 23:38:27,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:27,758 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:27,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 23:38:27,758 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:27,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:27,758 INFO L85 PathProgramCache]: Analyzing trace with hash -649994416, now seen corresponding path program 1 times [2024-10-12 23:38:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:27,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190949347] [2024-10-12 23:38:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190949347] [2024-10-12 23:38:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190949347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:28,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:38:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699571048] [2024-10-12 23:38:28,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:28,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:38:28,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:28,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:38:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:38:28,094 INFO L87 Difference]: Start difference. First operand 291 states and 365 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 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) [2024-10-12 23:38:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:28,228 INFO L93 Difference]: Finished difference Result 534 states and 678 transitions. [2024-10-12 23:38:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 23:38:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 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 75 [2024-10-12 23:38:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:28,231 INFO L225 Difference]: With dead ends: 534 [2024-10-12 23:38:28,232 INFO L226 Difference]: Without dead ends: 404 [2024-10-12 23:38:28,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:38:28,233 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 77 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:28,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 401 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:38:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-10-12 23:38:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 322. [2024-10-12 23:38:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.2585669781931463) internal successors, (404), 321 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 404 transitions. [2024-10-12 23:38:28,241 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 404 transitions. Word has length 75 [2024-10-12 23:38:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:28,242 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 404 transitions. [2024-10-12 23:38:28,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 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) [2024-10-12 23:38:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 404 transitions. [2024-10-12 23:38:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 23:38:28,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:28,243 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:28,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 23:38:28,243 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:28,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1017110192, now seen corresponding path program 1 times [2024-10-12 23:38:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737146275] [2024-10-12 23:38:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 23:38:28,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737146275] [2024-10-12 23:38:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737146275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:38:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:38:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:38:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606906913] [2024-10-12 23:38:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:38:28,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:38:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:38:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:38:28,497 INFO L87 Difference]: Start difference. First operand 322 states and 404 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2024-10-12 23:38:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:28,684 INFO L93 Difference]: Finished difference Result 636 states and 789 transitions. [2024-10-12 23:38:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 23:38:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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 76 [2024-10-12 23:38:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:28,687 INFO L225 Difference]: With dead ends: 636 [2024-10-12 23:38:28,687 INFO L226 Difference]: Without dead ends: 457 [2024-10-12 23:38:28,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 23:38:28,688 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 73 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:28,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 332 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:38:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-10-12 23:38:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 330. [2024-10-12 23:38:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.2644376899696048) internal successors, (416), 329 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 416 transitions. [2024-10-12 23:38:28,695 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 416 transitions. Word has length 76 [2024-10-12 23:38:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:28,695 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 416 transitions. [2024-10-12 23:38:28,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2024-10-12 23:38:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 416 transitions. [2024-10-12 23:38:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 23:38:28,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:28,697 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:28,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 23:38:28,697 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:28,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 281670359, now seen corresponding path program 1 times [2024-10-12 23:38:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441354386] [2024-10-12 23:38:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:29,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441354386] [2024-10-12 23:38:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441354386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796118721] [2024-10-12 23:38:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:29,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:29,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:29,123 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) [2024-10-12 23:38:29,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 23:38:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:29,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-12 23:38:29,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:29,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 39 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:30,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796118721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:30,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:30,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 23 [2024-10-12 23:38:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541637282] [2024-10-12 23:38:30,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:30,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 23:38:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 23:38:30,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-12 23:38:30,104 INFO L87 Difference]: Start difference. First operand 330 states and 416 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 23 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:30,973 INFO L93 Difference]: Finished difference Result 883 states and 1103 transitions. [2024-10-12 23:38:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 23:38:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 23 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-12 23:38:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:30,976 INFO L225 Difference]: With dead ends: 883 [2024-10-12 23:38:30,976 INFO L226 Difference]: Without dead ends: 675 [2024-10-12 23:38:30,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 23:38:30,978 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 388 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:30,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 558 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 23:38:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-10-12 23:38:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 516. [2024-10-12 23:38:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.2640776699029126) internal successors, (651), 515 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 651 transitions. [2024-10-12 23:38:30,989 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 651 transitions. Word has length 77 [2024-10-12 23:38:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:30,989 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 651 transitions. [2024-10-12 23:38:30,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 23 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 651 transitions. [2024-10-12 23:38:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:38:30,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:30,991 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:31,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 23:38:31,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:31,192 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:31,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -563147751, now seen corresponding path program 1 times [2024-10-12 23:38:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051296508] [2024-10-12 23:38:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:31,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:31,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051296508] [2024-10-12 23:38:31,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051296508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:31,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437987087] [2024-10-12 23:38:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:31,587 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) [2024-10-12 23:38:31,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 23:38:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:31,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-12 23:38:31,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:32,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437987087] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:32,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 8] total 20 [2024-10-12 23:38:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644126261] [2024-10-12 23:38:32,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:32,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 23:38:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 23:38:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-10-12 23:38:32,434 INFO L87 Difference]: Start difference. First operand 516 states and 651 transitions. Second operand has 21 states, 21 states have (on average 8.952380952380953) internal successors, (188), 20 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:33,107 INFO L93 Difference]: Finished difference Result 1336 states and 1685 transitions. [2024-10-12 23:38:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 23:38:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.952380952380953) internal successors, (188), 20 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-12 23:38:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:33,111 INFO L225 Difference]: With dead ends: 1336 [2024-10-12 23:38:33,111 INFO L226 Difference]: Without dead ends: 973 [2024-10-12 23:38:33,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=1047, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 23:38:33,116 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 321 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:33,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 350 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:38:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-10-12 23:38:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 854. [2024-10-12 23:38:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.2696365767878077) internal successors, (1083), 853 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1083 transitions. [2024-10-12 23:38:33,133 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1083 transitions. Word has length 78 [2024-10-12 23:38:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:33,133 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1083 transitions. [2024-10-12 23:38:33,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.952380952380953) internal successors, (188), 20 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1083 transitions. [2024-10-12 23:38:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 23:38:33,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:33,135 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:33,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 23:38:33,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:33,337 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:33,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1240746250, now seen corresponding path program 1 times [2024-10-12 23:38:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447514412] [2024-10-12 23:38:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447514412] [2024-10-12 23:38:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447514412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140645622] [2024-10-12 23:38:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:34,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:34,173 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) [2024-10-12 23:38:34,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 23:38:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:34,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-12 23:38:34,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:35,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140645622] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:38,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 19] total 44 [2024-10-12 23:38:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157444776] [2024-10-12 23:38:38,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:38,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-12 23:38:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-12 23:38:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 23:38:38,287 INFO L87 Difference]: Start difference. First operand 854 states and 1083 transitions. Second operand has 45 states, 45 states have (on average 4.8) internal successors, (216), 44 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:46,376 INFO L93 Difference]: Finished difference Result 2567 states and 3262 transitions. [2024-10-12 23:38:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-10-12 23:38:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.8) internal successors, (216), 44 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-12 23:38:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:46,382 INFO L225 Difference]: With dead ends: 2567 [2024-10-12 23:38:46,382 INFO L226 Difference]: Without dead ends: 1912 [2024-10-12 23:38:46,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13531 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4345, Invalid=36257, Unknown=0, NotChecked=0, Total=40602 [2024-10-12 23:38:46,393 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 862 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:46,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 738 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2615 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 23:38:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2024-10-12 23:38:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1333. [2024-10-12 23:38:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.2927927927927927) internal successors, (1722), 1332 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1722 transitions. [2024-10-12 23:38:46,422 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1722 transitions. Word has length 79 [2024-10-12 23:38:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:46,423 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1722 transitions. [2024-10-12 23:38:46,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.8) internal successors, (216), 44 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1722 transitions. [2024-10-12 23:38:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 23:38:46,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:46,426 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:46,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 23:38:46,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:46,631 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:46,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash 12517253, now seen corresponding path program 1 times [2024-10-12 23:38:46,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:46,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275820190] [2024-10-12 23:38:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 23:38:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275820190] [2024-10-12 23:38:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275820190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321647808] [2024-10-12 23:38:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:47,364 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) [2024-10-12 23:38:47,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 23:38:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:47,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-12 23:38:47,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:48,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321647808] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:49,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 16] total 36 [2024-10-12 23:38:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181611180] [2024-10-12 23:38:49,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:49,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 23:38:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 23:38:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 23:38:49,257 INFO L87 Difference]: Start difference. First operand 1333 states and 1722 transitions. Second operand has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:51,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:51,413 INFO L93 Difference]: Finished difference Result 3269 states and 4161 transitions. [2024-10-12 23:38:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-12 23:38:51,414 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 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 81 [2024-10-12 23:38:51,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:51,420 INFO L225 Difference]: With dead ends: 3269 [2024-10-12 23:38:51,420 INFO L226 Difference]: Without dead ends: 2102 [2024-10-12 23:38:51,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1219, Invalid=5587, Unknown=0, NotChecked=0, Total=6806 [2024-10-12 23:38:51,425 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1339 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:51,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 575 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 23:38:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2024-10-12 23:38:51,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1500. [2024-10-12 23:38:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.286190793862575) internal successors, (1928), 1499 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1928 transitions. [2024-10-12 23:38:51,461 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1928 transitions. Word has length 81 [2024-10-12 23:38:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:51,461 INFO L471 AbstractCegarLoop]: Abstraction has 1500 states and 1928 transitions. [2024-10-12 23:38:51,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1928 transitions. [2024-10-12 23:38:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-12 23:38:51,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:51,479 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:51,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 23:38:51,680 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,SelfDestructingSolverStorable22 [2024-10-12 23:38:51,681 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:51,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash -329204582, now seen corresponding path program 2 times [2024-10-12 23:38:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36522126] [2024-10-12 23:38:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 23:38:52,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:52,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36522126] [2024-10-12 23:38:52,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36522126] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:52,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761154743] [2024-10-12 23:38:52,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 23:38:52,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:52,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:52,420 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) [2024-10-12 23:38:52,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 23:38:52,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 23:38:52,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 23:38:52,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-12 23:38:52,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:53,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:38:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761154743] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:38:54,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:38:54,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 16] total 37 [2024-10-12 23:38:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655727598] [2024-10-12 23:38:54,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:38:54,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 23:38:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:38:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 23:38:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 23:38:54,181 INFO L87 Difference]: Start difference. First operand 1500 states and 1928 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:38:56,217 INFO L93 Difference]: Finished difference Result 6213 states and 7836 transitions. [2024-10-12 23:38:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-12 23:38:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-10-12 23:38:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:38:56,229 INFO L225 Difference]: With dead ends: 6213 [2024-10-12 23:38:56,229 INFO L226 Difference]: Without dead ends: 4842 [2024-10-12 23:38:56,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=477, Invalid=3813, Unknown=0, NotChecked=0, Total=4290 [2024-10-12 23:38:56,232 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 565 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:38:56,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1032 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 23:38:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2024-10-12 23:38:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 1822. [2024-10-12 23:38:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 1.2773201537616694) internal successors, (2326), 1821 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2326 transitions. [2024-10-12 23:38:56,294 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2326 transitions. Word has length 82 [2024-10-12 23:38:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:38:56,294 INFO L471 AbstractCegarLoop]: Abstraction has 1822 states and 2326 transitions. [2024-10-12 23:38:56,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:38:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2326 transitions. [2024-10-12 23:38:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-12 23:38:56,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:38:56,298 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:38:56,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 23:38:56,498 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,SelfDestructingSolverStorable23 [2024-10-12 23:38:56,499 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:38:56,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:38:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1974565558, now seen corresponding path program 1 times [2024-10-12 23:38:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:38:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810655161] [2024-10-12 23:38:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:38:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:38:57,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810655161] [2024-10-12 23:38:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810655161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:38:57,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4728970] [2024-10-12 23:38:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:38:57,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:38:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:38:57,283 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) [2024-10-12 23:38:57,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 23:38:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:38:57,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-10-12 23:38:57,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:38:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:38:59,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:39:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:39:01,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4728970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:39:01,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:39:01,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 23] total 59 [2024-10-12 23:39:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621827761] [2024-10-12 23:39:01,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:39:01,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-12 23:39:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-12 23:39:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=3068, Unknown=0, NotChecked=0, Total=3540 [2024-10-12 23:39:01,834 INFO L87 Difference]: Start difference. First operand 1822 states and 2326 transitions. Second operand has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 59 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:39:04,147 INFO L93 Difference]: Finished difference Result 4497 states and 5638 transitions. [2024-10-12 23:39:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-12 23:39:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 59 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-10-12 23:39:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:39:04,158 INFO L225 Difference]: With dead ends: 4497 [2024-10-12 23:39:04,159 INFO L226 Difference]: Without dead ends: 2842 [2024-10-12 23:39:04,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2894 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1276, Invalid=8036, Unknown=0, NotChecked=0, Total=9312 [2024-10-12 23:39:04,162 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 871 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:39:04,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 681 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 23:39:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2024-10-12 23:39:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1836. [2024-10-12 23:39:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.255040871934605) internal successors, (2303), 1835 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2303 transitions. [2024-10-12 23:39:04,227 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2303 transitions. Word has length 83 [2024-10-12 23:39:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:39:04,228 INFO L471 AbstractCegarLoop]: Abstraction has 1836 states and 2303 transitions. [2024-10-12 23:39:04,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 59 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2303 transitions. [2024-10-12 23:39:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 23:39:04,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:39:04,231 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:39:04,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 23:39:04,435 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,SelfDestructingSolverStorable24 [2024-10-12 23:39:04,436 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:39:04,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:39:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166647, now seen corresponding path program 1 times [2024-10-12 23:39:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:39:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357136766] [2024-10-12 23:39:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:39:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:39:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:39:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357136766] [2024-10-12 23:39:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357136766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:39:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830629677] [2024-10-12 23:39:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:05,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:39:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:39:05,143 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) [2024-10-12 23:39:05,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 23:39:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:05,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-10-12 23:39:05,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:39:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:39:06,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:39:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:39:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830629677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:39:08,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:39:08,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 16] total 40 [2024-10-12 23:39:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108150143] [2024-10-12 23:39:08,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:39:08,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-12 23:39:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-12 23:39:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 23:39:08,132 INFO L87 Difference]: Start difference. First operand 1836 states and 2303 transitions. Second operand has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 40 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:39:15,395 INFO L93 Difference]: Finished difference Result 6452 states and 7815 transitions. [2024-10-12 23:39:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-10-12 23:39:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 40 states have internal predecessors, (219), 0 states have call successors, (0), 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 84 [2024-10-12 23:39:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:39:15,403 INFO L225 Difference]: With dead ends: 6452 [2024-10-12 23:39:15,403 INFO L226 Difference]: Without dead ends: 4750 [2024-10-12 23:39:15,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8599 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2659, Invalid=23423, Unknown=0, NotChecked=0, Total=26082 [2024-10-12 23:39:15,406 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1496 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 23:39:15,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 707 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 23:39:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2024-10-12 23:39:15,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 2422. [2024-10-12 23:39:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 1.2399834779016936) internal successors, (3002), 2421 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3002 transitions. [2024-10-12 23:39:15,466 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3002 transitions. Word has length 84 [2024-10-12 23:39:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:39:15,467 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 3002 transitions. [2024-10-12 23:39:15,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 40 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3002 transitions. [2024-10-12 23:39:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 23:39:15,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:39:15,472 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:39:15,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 23:39:15,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 23:39:15,676 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:39:15,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:39:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1950551348, now seen corresponding path program 1 times [2024-10-12 23:39:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:39:15,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558698057] [2024-10-12 23:39:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:39:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 23:39:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:39:16,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558698057] [2024-10-12 23:39:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558698057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:39:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:39:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 23:39:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355469447] [2024-10-12 23:39:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:39:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 23:39:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 23:39:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 23:39:16,188 INFO L87 Difference]: Start difference. First operand 2422 states and 3002 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:39:16,439 INFO L93 Difference]: Finished difference Result 4550 states and 5656 transitions. [2024-10-12 23:39:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 23:39:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 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 84 [2024-10-12 23:39:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:39:16,445 INFO L225 Difference]: With dead ends: 4550 [2024-10-12 23:39:16,446 INFO L226 Difference]: Without dead ends: 2494 [2024-10-12 23:39:16,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-12 23:39:16,448 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 66 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:39:16,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 478 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:39:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2024-10-12 23:39:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2422. [2024-10-12 23:39:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 1.2399834779016936) internal successors, (3002), 2421 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3002 transitions. [2024-10-12 23:39:16,495 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3002 transitions. Word has length 84 [2024-10-12 23:39:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:39:16,496 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 3002 transitions. [2024-10-12 23:39:16,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3002 transitions. [2024-10-12 23:39:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 23:39:16,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:39:16,501 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:39:16,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 23:39:16,502 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:39:16,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:39:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1828895200, now seen corresponding path program 1 times [2024-10-12 23:39:16,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:39:16,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066775441] [2024-10-12 23:39:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:39:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 23:39:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:39:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066775441] [2024-10-12 23:39:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066775441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:39:17,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:39:17,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-12 23:39:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896379793] [2024-10-12 23:39:17,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:39:17,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 23:39:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 23:39:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-12 23:39:17,172 INFO L87 Difference]: Start difference. First operand 2422 states and 3002 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:39:17,281 INFO L93 Difference]: Finished difference Result 4670 states and 5797 transitions. [2024-10-12 23:39:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 23:39:17,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-12 23:39:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:39:17,287 INFO L225 Difference]: With dead ends: 4670 [2024-10-12 23:39:17,287 INFO L226 Difference]: Without dead ends: 2492 [2024-10-12 23:39:17,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-12 23:39:17,290 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 78 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:39:17,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 345 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:39:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2024-10-12 23:39:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2418. [2024-10-12 23:39:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 1.240380637153496) internal successors, (2998), 2417 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2998 transitions. [2024-10-12 23:39:17,338 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2998 transitions. Word has length 85 [2024-10-12 23:39:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:39:17,339 INFO L471 AbstractCegarLoop]: Abstraction has 2418 states and 2998 transitions. [2024-10-12 23:39:17,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2998 transitions. [2024-10-12 23:39:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-12 23:39:17,343 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:39:17,343 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:39:17,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 23:39:17,344 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:39:17,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:39:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash -675680184, now seen corresponding path program 1 times [2024-10-12 23:39:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:39:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955060236] [2024-10-12 23:39:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:17,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:39:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 23:39:17,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:39:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955060236] [2024-10-12 23:39:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955060236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:39:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289161779] [2024-10-12 23:39:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:39:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:39:17,953 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) [2024-10-12 23:39:17,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 23:39:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:18,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-12 23:39:18,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:39:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 23:39:18,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:39:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 96 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 23:39:18,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289161779] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:39:18,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:39:18,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 33 [2024-10-12 23:39:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929118152] [2024-10-12 23:39:18,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:39:18,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-12 23:39:18,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-12 23:39:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 23:39:18,908 INFO L87 Difference]: Start difference. First operand 2418 states and 2998 transitions. Second operand has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 33 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:39:19,751 INFO L93 Difference]: Finished difference Result 4545 states and 5654 transitions. [2024-10-12 23:39:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 23:39:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 33 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-10-12 23:39:19,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:39:19,758 INFO L225 Difference]: With dead ends: 4545 [2024-10-12 23:39:19,759 INFO L226 Difference]: Without dead ends: 2673 [2024-10-12 23:39:19,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=2198, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 23:39:19,761 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 249 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 23:39:19,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 879 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 23:39:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2024-10-12 23:39:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2390. [2024-10-12 23:39:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 1.243197990791126) internal successors, (2970), 2389 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 2970 transitions. [2024-10-12 23:39:19,810 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 2970 transitions. Word has length 105 [2024-10-12 23:39:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:39:19,811 INFO L471 AbstractCegarLoop]: Abstraction has 2390 states and 2970 transitions. [2024-10-12 23:39:19,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 33 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:39:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 2970 transitions. [2024-10-12 23:39:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-12 23:39:19,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:39:19,830 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:39:19,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 23:39:20,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 23:39:20,030 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:39:20,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:39:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash -234869143, now seen corresponding path program 1 times [2024-10-12 23:39:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:39:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951817570] [2024-10-12 23:39:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:20,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:39:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 91 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 23:39:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:39:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951817570] [2024-10-12 23:39:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951817570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:39:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122069481] [2024-10-12 23:39:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:39:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:39:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:39:20,694 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) [2024-10-12 23:39:20,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 23:39:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:39:20,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-10-12 23:39:20,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:39:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 83 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 23:39:21,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:39:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 23:39:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122069481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:39:22,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:39:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 17] total 40 [2024-10-12 23:39:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506142813] [2024-10-12 23:39:22,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:39:22,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 23:39:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:39:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 23:39:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 23:39:22,246 INFO L87 Difference]: Start difference. First operand 2390 states and 2970 transitions. Second operand has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 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)