./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.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 46c8c70b94fb416b397f60e2acbf82f6629dd4cb8ce2ac8f593f21f2a4fca4f4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 11:54:25,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 11:54:25,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 11:54:25,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 11:54:25,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 11:54:25,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 11:54:25,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 11:54:25,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 11:54:25,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 11:54:25,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 11:54:25,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 11:54:25,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 11:54:25,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 11:54:25,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 11:54:25,715 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 11:54:25,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 11:54:25,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 11:54:25,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 11:54:25,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 11:54:25,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 11:54:25,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 11:54:25,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 11:54:25,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 11:54:25,722 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 11:54:25,722 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 11:54:25,722 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 11:54:25,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 11:54:25,723 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 11:54:25,723 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 11:54:25,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:54:25,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 11:54:25,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 11:54:25,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 11:54:25,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46c8c70b94fb416b397f60e2acbf82f6629dd4cb8ce2ac8f593f21f2a4fca4f4 [2024-11-16 11:54:25,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 11:54:25,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 11:54:25,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 11:54:25,988 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 11:54:25,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 11:54:25,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-16 11:54:27,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 11:54:27,471 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 11:54:27,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-16 11:54:27,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5701fe5/a1a4980c37264ee796e4aa61460e78cc/FLAG3de5cfe50 [2024-11-16 11:54:27,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5701fe5/a1a4980c37264ee796e4aa61460e78cc [2024-11-16 11:54:27,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 11:54:27,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 11:54:27,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 11:54:27,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 11:54:27,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 11:54:27,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:27,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54497218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27, skipping insertion in model container [2024-11-16 11:54:27,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:27,546 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 11:54:27,698 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c[1266,1279] [2024-11-16 11:54:27,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:54:27,812 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 11:54:27,821 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c[1266,1279] [2024-11-16 11:54:27,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:54:27,882 INFO L204 MainTranslator]: Completed translation [2024-11-16 11:54:27,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27 WrapperNode [2024-11-16 11:54:27,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 11:54:27,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 11:54:27,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 11:54:27,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 11:54:27,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:27,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:27,979 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 719 [2024-11-16 11:54:27,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 11:54:27,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 11:54:27,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 11:54:27,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 11:54:27,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:27,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,049 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 11:54:28,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 11:54:28,100 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 11:54:28,100 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 11:54:28,101 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 11:54:28,101 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (1/1) ... [2024-11-16 11:54:28,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:54:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:28,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 11:54:28,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 11:54:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 11:54:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 11:54:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 11:54:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 11:54:28,308 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 11:54:28,310 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 11:54:28,951 INFO L? ?]: Removed 373 outVars from TransFormulas that were not future-live. [2024-11-16 11:54:28,952 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 11:54:28,996 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 11:54:28,999 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 11:54:28,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:54:28 BoogieIcfgContainer [2024-11-16 11:54:29,000 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 11:54:29,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 11:54:29,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 11:54:29,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 11:54:29,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:27" (1/3) ... [2024-11-16 11:54:29,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeef429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:29, skipping insertion in model container [2024-11-16 11:54:29,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:27" (2/3) ... [2024-11-16 11:54:29,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeef429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:29, skipping insertion in model container [2024-11-16 11:54:29,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:54:28" (3/3) ... [2024-11-16 11:54:29,013 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-16 11:54:29,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 11:54:29,029 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 11:54:29,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 11:54:29,089 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;@6111ed3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 11:54:29,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 11:54:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.4825174825174825) internal successors, (212), 144 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 11:54:29,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:29,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:29,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:29,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash 320515346, now seen corresponding path program 1 times [2024-11-16 11:54:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488880521] [2024-11-16 11:54:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:29,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488880521] [2024-11-16 11:54:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488880521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:29,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684456229] [2024-11-16 11:54:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:29,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:29,746 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.4825174825174825) internal successors, (212), 144 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:29,889 INFO L93 Difference]: Finished difference Result 233 states and 343 transitions. [2024-11-16 11:54:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:29,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-16 11:54:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:29,898 INFO L225 Difference]: With dead ends: 233 [2024-11-16 11:54:29,898 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 11:54:29,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:29,904 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:29,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 508 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 11:54:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-16 11:54:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2024-11-16 11:54:29,942 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 42 [2024-11-16 11:54:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:29,943 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2024-11-16 11:54:29,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2024-11-16 11:54:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 11:54:29,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:29,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:29,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 11:54:29,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:29,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1491094616, now seen corresponding path program 1 times [2024-11-16 11:54:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687053822] [2024-11-16 11:54:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687053822] [2024-11-16 11:54:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687053822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:30,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079642823] [2024-11-16 11:54:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:30,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:30,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:30,109 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:30,213 INFO L93 Difference]: Finished difference Result 232 states and 339 transitions. [2024-11-16 11:54:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 11:54:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:30,215 INFO L225 Difference]: With dead ends: 232 [2024-11-16 11:54:30,215 INFO L226 Difference]: Without dead ends: 144 [2024-11-16 11:54:30,216 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 [2024-11-16 11:54:30,216 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:30,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-16 11:54:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-16 11:54:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4685314685314685) internal successors, (210), 143 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 210 transitions. [2024-11-16 11:54:30,229 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 210 transitions. Word has length 43 [2024-11-16 11:54:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:30,230 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 210 transitions. [2024-11-16 11:54:30,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 210 transitions. [2024-11-16 11:54:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 11:54:30,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:30,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:30,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 11:54:30,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:30,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1273463497, now seen corresponding path program 1 times [2024-11-16 11:54:30,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:30,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125964604] [2024-11-16 11:54:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125964604] [2024-11-16 11:54:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125964604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971117482] [2024-11-16 11:54:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:30,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:30,595 INFO L87 Difference]: Start difference. First operand 144 states and 210 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:30,691 INFO L93 Difference]: Finished difference Result 234 states and 340 transitions. [2024-11-16 11:54:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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 44 [2024-11-16 11:54:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:30,693 INFO L225 Difference]: With dead ends: 234 [2024-11-16 11:54:30,693 INFO L226 Difference]: Without dead ends: 144 [2024-11-16 11:54:30,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:30,694 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 6 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:30,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 495 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-16 11:54:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-16 11:54:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2024-11-16 11:54:30,699 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 44 [2024-11-16 11:54:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:30,700 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2024-11-16 11:54:30,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2024-11-16 11:54:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 11:54:30,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:30,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:30,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 11:54:30,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:30,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1882000051, now seen corresponding path program 1 times [2024-11-16 11:54:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:30,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407342100] [2024-11-16 11:54:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:30,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407342100] [2024-11-16 11:54:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407342100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 11:54:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937837693] [2024-11-16 11:54:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:31,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:54:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:54:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:54:31,043 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:31,242 INFO L93 Difference]: Finished difference Result 244 states and 352 transitions. [2024-11-16 11:54:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:54:31,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 11:54:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:31,245 INFO L225 Difference]: With dead ends: 244 [2024-11-16 11:54:31,246 INFO L226 Difference]: Without dead ends: 154 [2024-11-16 11:54:31,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-16 11:54:31,248 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 193 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:31,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 977 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-16 11:54:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-11-16 11:54:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4539473684210527) internal successors, (221), 152 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2024-11-16 11:54:31,259 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 45 [2024-11-16 11:54:31,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:31,259 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2024-11-16 11:54:31,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2024-11-16 11:54:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 11:54:31,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:31,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:31,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 11:54:31,261 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:31,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1016485893, now seen corresponding path program 1 times [2024-11-16 11:54:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500092698] [2024-11-16 11:54:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500092698] [2024-11-16 11:54:31,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500092698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:31,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:31,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:54:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995273603] [2024-11-16 11:54:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:31,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:54:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:54:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:54:31,516 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:31,619 INFO L93 Difference]: Finished difference Result 258 states and 370 transitions. [2024-11-16 11:54:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 11:54:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:31,621 INFO L225 Difference]: With dead ends: 258 [2024-11-16 11:54:31,621 INFO L226 Difference]: Without dead ends: 159 [2024-11-16 11:54:31,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:31,624 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 176 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:31,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 495 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-16 11:54:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-16 11:54:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4367088607594938) internal successors, (227), 158 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 227 transitions. [2024-11-16 11:54:31,633 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 227 transitions. Word has length 46 [2024-11-16 11:54:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:31,633 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 227 transitions. [2024-11-16 11:54:31,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 227 transitions. [2024-11-16 11:54:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 11:54:31,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:31,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:31,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 11:54:31,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:31,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1894966977, now seen corresponding path program 1 times [2024-11-16 11:54:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384826218] [2024-11-16 11:54:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384826218] [2024-11-16 11:54:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384826218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:31,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956373816] [2024-11-16 11:54:31,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:31,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:31,820 INFO L87 Difference]: Start difference. First operand 159 states and 227 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:32,081 INFO L93 Difference]: Finished difference Result 297 states and 415 transitions. [2024-11-16 11:54:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 11:54:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:32,082 INFO L225 Difference]: With dead ends: 297 [2024-11-16 11:54:32,083 INFO L226 Difference]: Without dead ends: 192 [2024-11-16 11:54:32,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:54:32,084 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 239 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:32,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 530 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:54:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-16 11:54:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 161. [2024-11-16 11:54:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.43125) internal successors, (229), 160 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 229 transitions. [2024-11-16 11:54:32,090 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 229 transitions. Word has length 46 [2024-11-16 11:54:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:32,090 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 229 transitions. [2024-11-16 11:54:32,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 229 transitions. [2024-11-16 11:54:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 11:54:32,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:32,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 11:54:32,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -612650126, now seen corresponding path program 1 times [2024-11-16 11:54:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120768407] [2024-11-16 11:54:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120768407] [2024-11-16 11:54:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120768407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:32,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165290610] [2024-11-16 11:54:32,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:32,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:32,237 INFO L87 Difference]: Start difference. First operand 161 states and 229 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:32,467 INFO L93 Difference]: Finished difference Result 278 states and 389 transitions. [2024-11-16 11:54:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 47 [2024-11-16 11:54:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:32,468 INFO L225 Difference]: With dead ends: 278 [2024-11-16 11:54:32,468 INFO L226 Difference]: Without dead ends: 173 [2024-11-16 11:54:32,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:54:32,469 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 203 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:32,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 530 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:54:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-16 11:54:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2024-11-16 11:54:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 162 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2024-11-16 11:54:32,480 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 47 [2024-11-16 11:54:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:32,480 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2024-11-16 11:54:32,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2024-11-16 11:54:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 11:54:32,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:32,485 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, 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, 1, 1] [2024-11-16 11:54:32,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 11:54:32,485 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:32,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 988842331, now seen corresponding path program 1 times [2024-11-16 11:54:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273842131] [2024-11-16 11:54:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273842131] [2024-11-16 11:54:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273842131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51639329] [2024-11-16 11:54:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:33,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:33,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:54:33,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 11:54:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 11:54:33,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:33,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:54:33,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51639329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:33,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:54:33,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-16 11:54:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857741751] [2024-11-16 11:54:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:33,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:54:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:54:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:54:33,881 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:34,229 INFO L93 Difference]: Finished difference Result 281 states and 393 transitions. [2024-11-16 11:54:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:34,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-11-16 11:54:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:34,231 INFO L225 Difference]: With dead ends: 281 [2024-11-16 11:54:34,231 INFO L226 Difference]: Without dead ends: 176 [2024-11-16 11:54:34,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:54:34,232 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 197 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:34,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 150 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:54:34,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-16 11:54:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2024-11-16 11:54:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.396551724137931) internal successors, (243), 174 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 243 transitions. [2024-11-16 11:54:34,237 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 243 transitions. Word has length 90 [2024-11-16 11:54:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:34,237 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 243 transitions. [2024-11-16 11:54:34,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 243 transitions. [2024-11-16 11:54:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 11:54:34,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:34,238 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, 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, 1, 1, 1, 1] [2024-11-16 11:54:34,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 11:54:34,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:34,439 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:34,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1779795375, now seen corresponding path program 1 times [2024-11-16 11:54:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982703282] [2024-11-16 11:54:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982703282] [2024-11-16 11:54:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982703282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:35,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490953018] [2024-11-16 11:54:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:35,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:35,064 INFO L87 Difference]: Start difference. First operand 175 states and 243 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:35,446 INFO L93 Difference]: Finished difference Result 334 states and 470 transitions. [2024-11-16 11:54:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:54:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-11-16 11:54:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:35,447 INFO L225 Difference]: With dead ends: 334 [2024-11-16 11:54:35,447 INFO L226 Difference]: Without dead ends: 229 [2024-11-16 11:54:35,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:54:35,448 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 343 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:35,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 377 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:54:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-16 11:54:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 198. [2024-11-16 11:54:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.401015228426396) internal successors, (276), 197 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 276 transitions. [2024-11-16 11:54:35,452 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 276 transitions. Word has length 92 [2024-11-16 11:54:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:35,452 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 276 transitions. [2024-11-16 11:54:35,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 276 transitions. [2024-11-16 11:54:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-16 11:54:35,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:35,453 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, 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, 1, 1, 1, 1, 1] [2024-11-16 11:54:35,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 11:54:35,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:35,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash -939530245, now seen corresponding path program 1 times [2024-11-16 11:54:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631503091] [2024-11-16 11:54:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631503091] [2024-11-16 11:54:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631503091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:36,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736972425] [2024-11-16 11:54:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:36,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:36,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:36,040 INFO L87 Difference]: Start difference. First operand 198 states and 276 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:36,303 INFO L93 Difference]: Finished difference Result 328 states and 459 transitions. [2024-11-16 11:54:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:54:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-16 11:54:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:36,305 INFO L225 Difference]: With dead ends: 328 [2024-11-16 11:54:36,305 INFO L226 Difference]: Without dead ends: 205 [2024-11-16 11:54:36,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:54:36,306 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 319 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:36,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 350 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:54:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-16 11:54:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 198. [2024-11-16 11:54:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3959390862944163) internal successors, (275), 197 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 275 transitions. [2024-11-16 11:54:36,311 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 275 transitions. Word has length 93 [2024-11-16 11:54:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:36,311 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 275 transitions. [2024-11-16 11:54:36,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 275 transitions. [2024-11-16 11:54:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 11:54:36,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:36,312 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:36,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 11:54:36,312 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:36,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2011434902, now seen corresponding path program 1 times [2024-11-16 11:54:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107577579] [2024-11-16 11:54:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107577579] [2024-11-16 11:54:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107577579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814276791] [2024-11-16 11:54:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:37,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:54:37,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 11:54:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:37,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 11:54:37,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:37,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814276791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:38,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 11:54:38,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 12] total 24 [2024-11-16 11:54:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866197027] [2024-11-16 11:54:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:38,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 11:54:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 11:54:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-16 11:54:38,530 INFO L87 Difference]: Start difference. First operand 198 states and 275 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:39,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:39,110 INFO L93 Difference]: Finished difference Result 361 states and 501 transitions. [2024-11-16 11:54:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 11:54:39,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-11-16 11:54:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:39,112 INFO L225 Difference]: With dead ends: 361 [2024-11-16 11:54:39,112 INFO L226 Difference]: Without dead ends: 256 [2024-11-16 11:54:39,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-16 11:54:39,113 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 304 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:39,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 434 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:54:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-16 11:54:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 225. [2024-11-16 11:54:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3973214285714286) internal successors, (313), 224 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) [2024-11-16 11:54:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2024-11-16 11:54:39,118 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 94 [2024-11-16 11:54:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:39,118 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2024-11-16 11:54:39,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2024-11-16 11:54:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 11:54:39,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:39,119 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:39,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 11:54:39,323 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,SelfDestructingSolverStorable10 [2024-11-16 11:54:39,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:39,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1297111747, now seen corresponding path program 1 times [2024-11-16 11:54:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739001735] [2024-11-16 11:54:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739001735] [2024-11-16 11:54:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739001735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:40,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:40,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 11:54:40,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266280560] [2024-11-16 11:54:40,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:40,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 11:54:40,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 11:54:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:54:40,075 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:40,724 INFO L93 Difference]: Finished difference Result 390 states and 540 transitions. [2024-11-16 11:54:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 11:54:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-16 11:54:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:40,725 INFO L225 Difference]: With dead ends: 390 [2024-11-16 11:54:40,725 INFO L226 Difference]: Without dead ends: 258 [2024-11-16 11:54:40,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:54:40,726 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 243 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:40,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 538 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 11:54:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-16 11:54:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 227. [2024-11-16 11:54:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3938053097345133) internal successors, (315), 226 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 315 transitions. [2024-11-16 11:54:40,731 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 315 transitions. Word has length 95 [2024-11-16 11:54:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:40,731 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 315 transitions. [2024-11-16 11:54:40,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 315 transitions. [2024-11-16 11:54:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 11:54:40,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:40,732 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:40,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 11:54:40,732 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1361699808, now seen corresponding path program 1 times [2024-11-16 11:54:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985018807] [2024-11-16 11:54:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985018807] [2024-11-16 11:54:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985018807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279923567] [2024-11-16 11:54:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:41,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:54:41,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 11:54:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:41,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-16 11:54:41,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:42,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279923567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:43,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18, 16] total 37 [2024-11-16 11:54:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591055149] [2024-11-16 11:54:43,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:43,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 11:54:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 11:54:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 11:54:43,312 INFO L87 Difference]: Start difference. First operand 227 states and 315 transitions. Second operand has 37 states, 37 states have (on average 7.027027027027027) internal successors, (260), 37 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:45,222 INFO L93 Difference]: Finished difference Result 404 states and 562 transitions. [2024-11-16 11:54:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 11:54:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.027027027027027) internal successors, (260), 37 states have internal predecessors, (260), 0 states have call successors, (0), 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 95 [2024-11-16 11:54:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:45,224 INFO L225 Difference]: With dead ends: 404 [2024-11-16 11:54:45,224 INFO L226 Difference]: Without dead ends: 270 [2024-11-16 11:54:45,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=586, Invalid=3074, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 11:54:45,226 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 1269 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:45,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 803 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 11:54:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-16 11:54:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 211. [2024-11-16 11:54:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3952380952380952) internal successors, (293), 210 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2024-11-16 11:54:45,231 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 293 transitions. Word has length 95 [2024-11-16 11:54:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:45,231 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 293 transitions. [2024-11-16 11:54:45,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.027027027027027) internal successors, (260), 37 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 293 transitions. [2024-11-16 11:54:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 11:54:45,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:45,233 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:45,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 11:54:45,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:45,433 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:45,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1271918256, now seen corresponding path program 1 times [2024-11-16 11:54:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883594169] [2024-11-16 11:54:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883594169] [2024-11-16 11:54:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883594169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267146177] [2024-11-16 11:54:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:46,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:46,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:54:46,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 11:54:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:46,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-16 11:54:46,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:47,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267146177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:48,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 32 [2024-11-16 11:54:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099257953] [2024-11-16 11:54:48,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:48,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 11:54:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 11:54:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2024-11-16 11:54:48,729 INFO L87 Difference]: Start difference. First operand 211 states and 293 transitions. Second operand has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:49,936 INFO L93 Difference]: Finished difference Result 402 states and 559 transitions. [2024-11-16 11:54:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 11:54:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 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 96 [2024-11-16 11:54:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:49,937 INFO L225 Difference]: With dead ends: 402 [2024-11-16 11:54:49,938 INFO L226 Difference]: Without dead ends: 263 [2024-11-16 11:54:49,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=306, Invalid=2046, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 11:54:49,939 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 561 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:49,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 595 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 11:54:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-16 11:54:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 253. [2024-11-16 11:54:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3968253968253967) internal successors, (352), 252 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 352 transitions. [2024-11-16 11:54:49,943 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 352 transitions. Word has length 96 [2024-11-16 11:54:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:49,943 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 352 transitions. [2024-11-16 11:54:49,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 352 transitions. [2024-11-16 11:54:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-16 11:54:49,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:49,944 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:54:49,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 11:54:50,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:50,145 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:50,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1052920562, now seen corresponding path program 1 times [2024-11-16 11:54:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602817194] [2024-11-16 11:54:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:51,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602817194] [2024-11-16 11:54:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602817194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:51,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:51,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 11:54:51,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635306449] [2024-11-16 11:54:51,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:51,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:54:51,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:54:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:54:51,280 INFO L87 Difference]: Start difference. First operand 253 states and 352 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:51,936 INFO L93 Difference]: Finished difference Result 676 states and 955 transitions. [2024-11-16 11:54:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 11:54:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-16 11:54:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:51,938 INFO L225 Difference]: With dead ends: 676 [2024-11-16 11:54:51,938 INFO L226 Difference]: Without dead ends: 558 [2024-11-16 11:54:51,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:54:51,938 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 339 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:51,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 662 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 11:54:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-16 11:54:51,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 400. [2024-11-16 11:54:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.3984962406015038) internal successors, (558), 399 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 558 transitions. [2024-11-16 11:54:51,947 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 558 transitions. Word has length 142 [2024-11-16 11:54:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:51,948 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 558 transitions. [2024-11-16 11:54:51,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 558 transitions. [2024-11-16 11:54:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-16 11:54:51,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:51,949 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:54:51,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 11:54:51,949 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:51,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 833420868, now seen corresponding path program 1 times [2024-11-16 11:54:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617913095] [2024-11-16 11:54:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 11:54:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617913095] [2024-11-16 11:54:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617913095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287988346] [2024-11-16 11:54:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:53,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:53,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:54:53,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 11:54:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:54,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 11:54:54,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:54,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:55,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287988346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:55,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:55,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 27 [2024-11-16 11:54:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984776235] [2024-11-16 11:54:55,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:55,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 11:54:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 11:54:55,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-16 11:54:55,475 INFO L87 Difference]: Start difference. First operand 400 states and 558 transitions. Second operand has 27 states, 27 states have (on average 13.88888888888889) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:57,441 INFO L93 Difference]: Finished difference Result 823 states and 1144 transitions. [2024-11-16 11:54:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 11:54:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 13.88888888888889) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 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 143 [2024-11-16 11:54:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:57,443 INFO L225 Difference]: With dead ends: 823 [2024-11-16 11:54:57,443 INFO L226 Difference]: Without dead ends: 596 [2024-11-16 11:54:57,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=672, Invalid=4020, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 11:54:57,445 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1169 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:57,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 836 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 11:54:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-16 11:54:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 538. [2024-11-16 11:54:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.366852886405959) internal successors, (734), 537 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 734 transitions. [2024-11-16 11:54:57,454 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 734 transitions. Word has length 143 [2024-11-16 11:54:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:57,454 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 734 transitions. [2024-11-16 11:54:57,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 13.88888888888889) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 734 transitions. [2024-11-16 11:54:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-16 11:54:57,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:57,456 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:54:57,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 11:54:57,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 11:54:57,657 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:57,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash 654142427, now seen corresponding path program 1 times [2024-11-16 11:54:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:57,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927622807] [2024-11-16 11:54:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:00,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:00,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927622807] [2024-11-16 11:55:00,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927622807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:00,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844161048] [2024-11-16 11:55:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:00,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:00,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:00,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:00,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 11:55:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:01,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 11:55:01,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 11:55:01,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:55:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844161048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:01,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:55:01,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2024-11-16 11:55:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460114108] [2024-11-16 11:55:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:01,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:55:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:55:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-16 11:55:01,731 INFO L87 Difference]: Start difference. First operand 538 states and 734 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:02,026 INFO L93 Difference]: Finished difference Result 831 states and 1130 transitions. [2024-11-16 11:55:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:55:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 146 [2024-11-16 11:55:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:02,028 INFO L225 Difference]: With dead ends: 831 [2024-11-16 11:55:02,028 INFO L226 Difference]: Without dead ends: 494 [2024-11-16 11:55:02,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-16 11:55:02,029 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 336 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:02,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 199 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:55:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-16 11:55:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2024-11-16 11:55:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.359026369168357) internal successors, (670), 493 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 670 transitions. [2024-11-16 11:55:02,037 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 670 transitions. Word has length 146 [2024-11-16 11:55:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:02,037 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 670 transitions. [2024-11-16 11:55:02,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 670 transitions. [2024-11-16 11:55:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-16 11:55:02,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:02,038 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:55:02,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 11:55:02,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 11:55:02,239 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:02,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 960065723, now seen corresponding path program 1 times [2024-11-16 11:55:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427548106] [2024-11-16 11:55:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427548106] [2024-11-16 11:55:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427548106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233135073] [2024-11-16 11:55:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:04,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:04,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:04,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:04,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 11:55:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:05,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 11:55:05,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:05,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 37 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233135073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:05,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 13] total 39 [2024-11-16 11:55:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050752716] [2024-11-16 11:55:05,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 11:55:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 11:55:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 11:55:05,956 INFO L87 Difference]: Start difference. First operand 494 states and 670 transitions. Second operand has 39 states, 39 states have (on average 9.820512820512821) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:08,684 INFO L93 Difference]: Finished difference Result 1835 states and 2470 transitions. [2024-11-16 11:55:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-16 11:55:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 9.820512820512821) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 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 146 [2024-11-16 11:55:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:08,688 INFO L225 Difference]: With dead ends: 1835 [2024-11-16 11:55:08,689 INFO L226 Difference]: Without dead ends: 1502 [2024-11-16 11:55:08,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1108, Invalid=10022, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 11:55:08,692 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 1809 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:08,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 992 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4001 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 11:55:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2024-11-16 11:55:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1114. [2024-11-16 11:55:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 1.3584905660377358) internal successors, (1512), 1113 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1512 transitions. [2024-11-16 11:55:08,715 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1512 transitions. Word has length 146 [2024-11-16 11:55:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:08,715 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1512 transitions. [2024-11-16 11:55:08,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 9.820512820512821) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1512 transitions. [2024-11-16 11:55:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-16 11:55:08,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:08,718 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:55:08,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 11:55:08,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:08,918 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:08,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1504157873, now seen corresponding path program 1 times [2024-11-16 11:55:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:08,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801038525] [2024-11-16 11:55:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801038525] [2024-11-16 11:55:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801038525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489742075] [2024-11-16 11:55:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:11,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:11,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:11,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 11:55:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:11,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-16 11:55:11,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:12,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:14,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489742075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:14,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:14,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 46 [2024-11-16 11:55:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55284449] [2024-11-16 11:55:14,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:14,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 11:55:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 11:55:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 11:55:14,249 INFO L87 Difference]: Start difference. First operand 1114 states and 1512 transitions. Second operand has 46 states, 46 states have (on average 7.956521739130435) internal successors, (366), 46 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:18,431 INFO L93 Difference]: Finished difference Result 4174 states and 5758 transitions. [2024-11-16 11:55:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-16 11:55:18,432 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.956521739130435) internal successors, (366), 46 states have internal predecessors, (366), 0 states have call successors, (0), 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 147 [2024-11-16 11:55:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:18,441 INFO L225 Difference]: With dead ends: 4174 [2024-11-16 11:55:18,441 INFO L226 Difference]: Without dead ends: 3349 [2024-11-16 11:55:18,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1510, Invalid=10700, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 11:55:18,444 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 1793 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 6466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 6481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:18,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 1724 Invalid, 6481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 6466 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 11:55:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2024-11-16 11:55:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 1995. [2024-11-16 11:55:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 1.3676028084252758) internal successors, (2727), 1994 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2727 transitions. [2024-11-16 11:55:18,479 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2727 transitions. Word has length 147 [2024-11-16 11:55:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:18,480 INFO L471 AbstractCegarLoop]: Abstraction has 1995 states and 2727 transitions. [2024-11-16 11:55:18,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.956521739130435) internal successors, (366), 46 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2727 transitions. [2024-11-16 11:55:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-16 11:55:18,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:18,483 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:55:18,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 11:55:18,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:18,684 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:18,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1695676133, now seen corresponding path program 1 times [2024-11-16 11:55:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307424552] [2024-11-16 11:55:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 11:55:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307424552] [2024-11-16 11:55:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307424552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:55:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158181667] [2024-11-16 11:55:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:19,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:55:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:55:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:55:19,593 INFO L87 Difference]: Start difference. First operand 1995 states and 2727 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:19,827 INFO L93 Difference]: Finished difference Result 3767 states and 5137 transitions. [2024-11-16 11:55:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:55:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-16 11:55:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:19,833 INFO L225 Difference]: With dead ends: 3767 [2024-11-16 11:55:19,834 INFO L226 Difference]: Without dead ends: 2101 [2024-11-16 11:55:19,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:55:19,836 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 213 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:19,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 162 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:55:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2024-11-16 11:55:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1891. [2024-11-16 11:55:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 1.3455026455026455) internal successors, (2543), 1890 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2543 transitions. [2024-11-16 11:55:19,865 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2543 transitions. Word has length 148 [2024-11-16 11:55:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:19,866 INFO L471 AbstractCegarLoop]: Abstraction has 1891 states and 2543 transitions. [2024-11-16 11:55:19,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2543 transitions. [2024-11-16 11:55:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-16 11:55:19,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:19,869 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-16 11:55:19,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 11:55:19,869 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:19,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1796602932, now seen corresponding path program 1 times [2024-11-16 11:55:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:19,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911114743] [2024-11-16 11:55:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:22,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911114743] [2024-11-16 11:55:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911114743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159788211] [2024-11-16 11:55:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:22,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:22,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:22,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 11:55:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:23,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-16 11:55:23,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 50 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:25,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 11:55:26,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159788211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:26,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:26,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 22] total 60 [2024-11-16 11:55:26,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005345605] [2024-11-16 11:55:26,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:26,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 11:55:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 11:55:26,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3096, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 11:55:26,636 INFO L87 Difference]: Start difference. First operand 1891 states and 2543 transitions. Second operand has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:36,948 INFO L93 Difference]: Finished difference Result 12483 states and 17263 transitions. [2024-11-16 11:55:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-11-16 11:55:36,949 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 0 states have call successors, (0), 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 148 [2024-11-16 11:55:36,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:36,973 INFO L225 Difference]: With dead ends: 12483 [2024-11-16 11:55:36,973 INFO L226 Difference]: Without dead ends: 10973 [2024-11-16 11:55:36,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21456 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5352, Invalid=56898, Unknown=0, NotChecked=0, Total=62250 [2024-11-16 11:55:36,984 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 2173 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 10165 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 10215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 10165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:36,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 2181 Invalid, 10215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 10165 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-16 11:55:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10973 states. [2024-11-16 11:55:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10973 to 2743. [2024-11-16 11:55:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 1.363603209336251) internal successors, (3739), 2742 states have internal predecessors, (3739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3739 transitions. [2024-11-16 11:55:37,076 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3739 transitions. Word has length 148 [2024-11-16 11:55:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:37,076 INFO L471 AbstractCegarLoop]: Abstraction has 2743 states and 3739 transitions. [2024-11-16 11:55:37,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3739 transitions. [2024-11-16 11:55:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-16 11:55:37,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:37,080 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:37,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 11:55:37,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:37,281 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1040670110, now seen corresponding path program 1 times [2024-11-16 11:55:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943279536] [2024-11-16 11:55:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-16 11:55:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:39,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943279536] [2024-11-16 11:55:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943279536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:39,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:39,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:55:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572265000] [2024-11-16 11:55:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:39,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:55:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:55:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:55:39,669 INFO L87 Difference]: Start difference. First operand 2743 states and 3739 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:39,890 INFO L93 Difference]: Finished difference Result 5176 states and 7074 transitions. [2024-11-16 11:55:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:55:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-16 11:55:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:39,896 INFO L225 Difference]: With dead ends: 5176 [2024-11-16 11:55:39,896 INFO L226 Difference]: Without dead ends: 2543 [2024-11-16 11:55:39,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:55:39,900 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 190 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:39,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 159 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:55:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2024-11-16 11:55:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2525. [2024-11-16 11:55:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2524 states have (on average 1.3708399366085577) internal successors, (3460), 2524 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3460 transitions. [2024-11-16 11:55:39,936 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3460 transitions. Word has length 149 [2024-11-16 11:55:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:39,936 INFO L471 AbstractCegarLoop]: Abstraction has 2525 states and 3460 transitions. [2024-11-16 11:55:39,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3460 transitions. [2024-11-16 11:55:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 11:55:39,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:39,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-16 11:55:39,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 11:55:39,940 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:39,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1067098812, now seen corresponding path program 1 times [2024-11-16 11:55:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:39,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346758407] [2024-11-16 11:55:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:39,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 11:55:41,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:41,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346758407] [2024-11-16 11:55:41,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346758407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:41,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395994893] [2024-11-16 11:55:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:41,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:41,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 11:55:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:42,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 1969 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-16 11:55:42,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 96 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:43,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 149 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 11:55:43,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395994893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:43,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:43,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 12] total 36 [2024-11-16 11:55:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485202131] [2024-11-16 11:55:43,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:43,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 11:55:43,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 11:55:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1046, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 11:55:43,854 INFO L87 Difference]: Start difference. First operand 2525 states and 3460 transitions. Second operand has 36 states, 36 states have (on average 14.25) internal successors, (513), 36 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:46,367 INFO L93 Difference]: Finished difference Result 7754 states and 10652 transitions. [2024-11-16 11:55:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-16 11:55:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 14.25) internal successors, (513), 36 states have internal predecessors, (513), 0 states have call successors, (0), 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 196 [2024-11-16 11:55:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:46,379 INFO L225 Difference]: With dead ends: 7754 [2024-11-16 11:55:46,379 INFO L226 Difference]: Without dead ends: 5321 [2024-11-16 11:55:46,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=699, Invalid=4557, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 11:55:46,384 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1279 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 5719 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:46,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 1674 Invalid, 5726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 5719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 11:55:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2024-11-16 11:55:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 4428. [2024-11-16 11:55:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 1.3605150214592274) internal successors, (6023), 4427 states have internal predecessors, (6023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6023 transitions. [2024-11-16 11:55:46,456 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6023 transitions. Word has length 196 [2024-11-16 11:55:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:46,456 INFO L471 AbstractCegarLoop]: Abstraction has 4428 states and 6023 transitions. [2024-11-16 11:55:46,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 14.25) internal successors, (513), 36 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6023 transitions. [2024-11-16 11:55:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-16 11:55:46,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:46,463 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:46,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 11:55:46,664 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,SelfDestructingSolverStorable22 [2024-11-16 11:55:46,664 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:46,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2039971645, now seen corresponding path program 2 times [2024-11-16 11:55:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335575568] [2024-11-16 11:55:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:46,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms