./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.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_p20.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 e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 11:54:27,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 11:54:27,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 11:54:27,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 11:54:27,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 11:54:27,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 11:54:27,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 11:54:27,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 11:54:27,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 11:54:27,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 11:54:27,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 11:54:27,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 11:54:27,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 11:54:27,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 11:54:27,531 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 11:54:27,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 11:54:27,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 11:54:27,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 11:54:27,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 11:54:27,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 11:54:27,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 11:54:27,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 11:54:27,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 11:54:27,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 11:54:27,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 11:54:27,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 11:54:27,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 11:54:27,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 11:54:27,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 11:54:27,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:54:27,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 11:54:27,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 11:54:27,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 11:54:27,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 11:54:27,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 11:54:27,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 11:54:27,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 11:54:27,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 11:54:27,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 11:54:27,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2024-11-16 11:54:27,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 11:54:27,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 11:54:27,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 11:54:27,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 11:54:27,799 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 11:54:27,800 INFO L431 ainManager$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_p20.c [2024-11-16 11:54:29,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 11:54:29,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 11:54:29,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-16 11:54:29,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bac3d2c/f297b8ef8f6a478f84d1f3ebdf19af2a/FLAG06c783f6c [2024-11-16 11:54:29,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bac3d2c/f297b8ef8f6a478f84d1f3ebdf19af2a [2024-11-16 11:54:29,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 11:54:29,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 11:54:29,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 11:54:29,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 11:54:29,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 11:54:29,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:29" (1/1) ... [2024-11-16 11:54:29,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7107685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:29, skipping insertion in model container [2024-11-16 11:54:29,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:29" (1/1) ... [2024-11-16 11:54:29,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 11:54:30,068 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_p20.c[1266,1279] [2024-11-16 11:54:30,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:54:30,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 11:54:30,171 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_p20.c[1266,1279] [2024-11-16 11:54:30,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:54:30,221 INFO L204 MainTranslator]: Completed translation [2024-11-16 11:54:30,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30 WrapperNode [2024-11-16 11:54:30,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 11:54:30,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 11:54:30,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 11:54:30,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 11:54:30,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,293 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 340 [2024-11-16 11:54:30,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 11:54:30,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 11:54:30,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 11:54:30,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 11:54:30,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,341 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 11:54:30,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,353 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 11:54:30,367 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 11:54:30,367 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 11:54:30,367 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 11:54:30,368 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (1/1) ... [2024-11-16 11:54:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:54:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:30,402 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 11:54:30,409 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 11:54:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 11:54:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 11:54:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 11:54:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 11:54:30,577 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 11:54:30,579 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 11:54:31,045 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-16 11:54:31,046 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 11:54:31,080 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 11:54:31,080 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 11:54:31,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:54:31 BoogieIcfgContainer [2024-11-16 11:54:31,081 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 11:54:31,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 11:54:31,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 11:54:31,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 11:54:31,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:29" (1/3) ... [2024-11-16 11:54:31,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e148e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:31, skipping insertion in model container [2024-11-16 11:54:31,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:30" (2/3) ... [2024-11-16 11:54:31,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e148e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:31, skipping insertion in model container [2024-11-16 11:54:31,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:54:31" (3/3) ... [2024-11-16 11:54:31,090 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-16 11:54:31,106 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 11:54:31,106 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 11:54:31,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 11:54:31,170 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;@18ec43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 11:54:31,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 11:54:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 64 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 11:54:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 11:54:31,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:31,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:31,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:31,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1490647578, now seen corresponding path program 1 times [2024-11-16 11:54:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115015111] [2024-11-16 11:54:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:31,811 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 11:54:31,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115015111] [2024-11-16 11:54:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115015111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:31,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395985573] [2024-11-16 11:54:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:31,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:31,854 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 64 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) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:31,941 INFO L93 Difference]: Finished difference Result 105 states and 151 transitions. [2024-11-16 11:54:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 11:54:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:31,951 INFO L225 Difference]: With dead ends: 105 [2024-11-16 11:54:31,951 INFO L226 Difference]: Without dead ends: 62 [2024-11-16 11:54:31,954 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 11:54:31,957 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:31,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-16 11:54:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-16 11:54:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:54:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-11-16 11:54:31,986 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 26 [2024-11-16 11:54:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:31,986 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-11-16 11:54:31,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-11-16 11:54:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 11:54:31,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:31,988 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] [2024-11-16 11:54:31,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 11:54:31,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:31,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash -889511940, now seen corresponding path program 1 times [2024-11-16 11:54:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876293146] [2024-11-16 11:54:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:31,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:32,161 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 11:54:32,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:32,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876293146] [2024-11-16 11:54:32,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876293146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:32,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:32,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:32,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386094413] [2024-11-16 11:54:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:32,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:32,166 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:32,239 INFO L93 Difference]: Finished difference Result 104 states and 147 transitions. [2024-11-16 11:54:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:32,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 11:54:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:32,241 INFO L225 Difference]: With dead ends: 104 [2024-11-16 11:54:32,241 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 11:54:32,242 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 11:54:32,244 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:32,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 11:54:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-16 11:54:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 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 11:54:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2024-11-16 11:54:32,255 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 27 [2024-11-16 11:54:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:32,256 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2024-11-16 11:54:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2024-11-16 11:54:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 11:54:32,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:32,259 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] [2024-11-16 11:54:32,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 11:54:32,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:32,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2057822785, now seen corresponding path program 1 times [2024-11-16 11:54:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586211356] [2024-11-16 11:54:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:32,573 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 11:54:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586211356] [2024-11-16 11:54:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586211356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:32,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:54:32,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367179225] [2024-11-16 11:54:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:32,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:54:32,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:54:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:54:32,576 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:32,640 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-16 11:54:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:54:32,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 11:54:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:32,642 INFO L225 Difference]: With dead ends: 106 [2024-11-16 11:54:32,642 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 11:54:32,642 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 11:54:32,643 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:32,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 195 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 11:54:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-16 11:54:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-11-16 11:54:32,652 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 28 [2024-11-16 11:54:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:32,652 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-11-16 11:54:32,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-11-16 11:54:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 11:54:32,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:32,654 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] [2024-11-16 11:54:32,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 11:54:32,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:32,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash -958301481, now seen corresponding path program 1 times [2024-11-16 11:54:32,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:32,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748029203] [2024-11-16 11:54:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:32,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,002 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 11:54:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748029203] [2024-11-16 11:54:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748029203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 11:54:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001721490] [2024-11-16 11:54:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:54:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:54:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:54:33,005 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:33,167 INFO L93 Difference]: Finished difference Result 116 states and 160 transitions. [2024-11-16 11:54:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:54:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-16 11:54:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:33,168 INFO L225 Difference]: With dead ends: 116 [2024-11-16 11:54:33,168 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 11:54:33,169 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 11:54:33,170 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:33,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 384 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 11:54:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-16 11:54:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-11-16 11:54:33,182 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 29 [2024-11-16 11:54:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:33,182 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-11-16 11:54:33,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-11-16 11:54:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 11:54:33,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:33,185 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] [2024-11-16 11:54:33,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 11:54:33,185 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -255034679, now seen corresponding path program 1 times [2024-11-16 11:54:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663114281] [2024-11-16 11:54:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,359 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 11:54:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663114281] [2024-11-16 11:54:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663114281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815886019] [2024-11-16 11:54:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:33,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:33,364 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:33,445 INFO L93 Difference]: Finished difference Result 154 states and 208 transitions. [2024-11-16 11:54:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:33,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 11:54:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:33,447 INFO L225 Difference]: With dead ends: 154 [2024-11-16 11:54:33,447 INFO L226 Difference]: Without dead ends: 103 [2024-11-16 11:54:33,448 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 11:54:33,449 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 135 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:33,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-16 11:54:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2024-11-16 11:54:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-11-16 11:54:33,458 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 30 [2024-11-16 11:54:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:33,458 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-11-16 11:54:33,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-11-16 11:54:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 11:54:33,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:33,459 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] [2024-11-16 11:54:33,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 11:54:33,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:33,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1232879425, now seen corresponding path program 1 times [2024-11-16 11:54:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486386950] [2024-11-16 11:54:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:33,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,705 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 11:54:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486386950] [2024-11-16 11:54:33,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486386950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:33,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:33,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:54:33,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103174678] [2024-11-16 11:54:33,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:33,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:54:33,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:33,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:54:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:54:33,708 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:33,773 INFO L93 Difference]: Finished difference Result 132 states and 180 transitions. [2024-11-16 11:54:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:33,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 11:54:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:33,775 INFO L225 Difference]: With dead ends: 132 [2024-11-16 11:54:33,775 INFO L226 Difference]: Without dead ends: 81 [2024-11-16 11:54:33,775 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 11:54:33,776 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:33,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 199 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-16 11:54:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-16 11:54:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2024-11-16 11:54:33,781 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 30 [2024-11-16 11:54:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:33,781 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2024-11-16 11:54:33,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2024-11-16 11:54:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 11:54:33,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:33,782 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] [2024-11-16 11:54:33,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 11:54:33,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:33,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -904583982, now seen corresponding path program 1 times [2024-11-16 11:54:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597415606] [2024-11-16 11:54:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:33,898 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 11:54:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:33,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597415606] [2024-11-16 11:54:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597415606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:54:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380873289] [2024-11-16 11:54:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:33,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:54:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:54:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:54:33,901 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:33,964 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2024-11-16 11:54:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-16 11:54:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:33,965 INFO L225 Difference]: With dead ends: 150 [2024-11-16 11:54:33,965 INFO L226 Difference]: Without dead ends: 93 [2024-11-16 11:54:33,966 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 11:54:33,967 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 99 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:33,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 11:54:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-16 11:54:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2024-11-16 11:54:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2024-11-16 11:54:33,972 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 31 [2024-11-16 11:54:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:33,972 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2024-11-16 11:54:33,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2024-11-16 11:54:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 11:54:33,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:33,973 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] [2024-11-16 11:54:33,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 11:54:33,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:33,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1296754735, now seen corresponding path program 1 times [2024-11-16 11:54:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625735838] [2024-11-16 11:54:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:34,363 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 11:54:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625735838] [2024-11-16 11:54:34,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625735838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759582311] [2024-11-16 11:54:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:34,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:34,368 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 11:54:34,370 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 11:54:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:34,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 11:54:34,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:34,727 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 11:54:34,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:34,958 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 11:54:34,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759582311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:34,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:34,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-16 11:54:34,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715950538] [2024-11-16 11:54:34,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:34,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:54:34,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:54:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:54:34,962 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:35,185 INFO L93 Difference]: Finished difference Result 181 states and 237 transitions. [2024-11-16 11:54:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:54:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 11:54:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:35,187 INFO L225 Difference]: With dead ends: 181 [2024-11-16 11:54:35,189 INFO L226 Difference]: Without dead ends: 101 [2024-11-16 11:54:35,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:54:35,190 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 291 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:35,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 286 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:54:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-16 11:54:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-11-16 11:54:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 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 11:54:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-16 11:54:35,204 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 50 [2024-11-16 11:54:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:35,204 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-16 11:54:35,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-16 11:54:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 11:54:35,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:35,206 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] [2024-11-16 11:54:35,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 11:54:35,410 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 11:54:35,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:35,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 308688477, now seen corresponding path program 1 times [2024-11-16 11:54:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589664938] [2024-11-16 11:54:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:35,860 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 11:54:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589664938] [2024-11-16 11:54:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589664938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833483099] [2024-11-16 11:54:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:35,864 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 11:54:35,866 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 11:54:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:36,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 11:54:36,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:36,301 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 11:54:36,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:36,765 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 11:54:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833483099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:36,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:36,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-16 11:54:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072308692] [2024-11-16 11:54:36,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:36,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 11:54:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 11:54:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-16 11:54:36,768 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 11:54:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:37,146 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2024-11-16 11:54:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 11:54:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 11:54:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:37,148 INFO L225 Difference]: With dead ends: 195 [2024-11-16 11:54:37,148 INFO L226 Difference]: Without dead ends: 138 [2024-11-16 11:54:37,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-16 11:54:37,149 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 256 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:37,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 129 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:54:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-16 11:54:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 107. [2024-11-16 11:54:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.320754716981132) internal successors, (140), 106 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 11:54:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2024-11-16 11:54:37,161 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 51 [2024-11-16 11:54:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:37,161 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2024-11-16 11:54:37,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 11:54:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2024-11-16 11:54:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 11:54:37,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:37,162 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] [2024-11-16 11:54:37,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 11:54:37,363 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,SelfDestructingSolverStorable8 [2024-11-16 11:54:37,363 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:37,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash -609035330, now seen corresponding path program 1 times [2024-11-16 11:54:37,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:37,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441799645] [2024-11-16 11:54:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 11:54:38,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441799645] [2024-11-16 11:54:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441799645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268661686] [2024-11-16 11:54:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:38,034 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 11:54:38,035 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 11:54:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:38,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 11:54:38,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:38,666 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 11:54:38,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:39,572 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 11:54:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268661686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:39,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:39,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 21 [2024-11-16 11:54:39,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298028867] [2024-11-16 11:54:39,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:39,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 11:54:39,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 11:54:39,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-16 11:54:39,575 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 21 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 11:54:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:40,850 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2024-11-16 11:54:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 11:54:40,851 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 21 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 11:54:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:40,852 INFO L225 Difference]: With dead ends: 181 [2024-11-16 11:54:40,852 INFO L226 Difference]: Without dead ends: 124 [2024-11-16 11:54:40,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=345, Invalid=1725, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 11:54:40,853 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 223 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:40,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 210 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 11:54:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-16 11:54:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 113. [2024-11-16 11:54:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3125) internal successors, (147), 112 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 11:54:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-16 11:54:40,864 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 52 [2024-11-16 11:54:40,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:40,864 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-16 11:54:40,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 21 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 11:54:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-16 11:54:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 11:54:40,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:40,866 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:54:40,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 11:54:41,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:41,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:41,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1406725693, now seen corresponding path program 1 times [2024-11-16 11:54:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18544168] [2024-11-16 11:54:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:41,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18544168] [2024-11-16 11:54:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18544168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353859007] [2024-11-16 11:54:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:41,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:41,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:41,853 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 11:54:41,854 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 11:54:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:42,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-16 11:54:42,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:42,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353859007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:43,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 17] total 40 [2024-11-16 11:54:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521232637] [2024-11-16 11:54:43,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:43,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 11:54:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 11:54:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1345, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 11:54:43,750 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 11:54:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:46,688 INFO L93 Difference]: Finished difference Result 512 states and 661 transitions. [2024-11-16 11:54:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-16 11:54:46,689 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 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 71 [2024-11-16 11:54:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:46,691 INFO L225 Difference]: With dead ends: 512 [2024-11-16 11:54:46,692 INFO L226 Difference]: Without dead ends: 437 [2024-11-16 11:54:46,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1341, Invalid=9789, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 11:54:46,698 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 654 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:46,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 898 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 11:54:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-16 11:54:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 228. [2024-11-16 11:54:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 227 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 11:54:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 300 transitions. [2024-11-16 11:54:46,708 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 300 transitions. Word has length 71 [2024-11-16 11:54:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:46,709 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 300 transitions. [2024-11-16 11:54:46,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 11:54:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 300 transitions. [2024-11-16 11:54:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 11:54:46,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:46,710 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:54:46,730 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 11:54:46,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:46,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:46,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 938947440, now seen corresponding path program 1 times [2024-11-16 11:54:46,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99729611] [2024-11-16 11:54:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:46,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 11:54:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99729611] [2024-11-16 11:54:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99729611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:54:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929891878] [2024-11-16 11:54:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:48,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:54:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:54:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:54:48,187 INFO L87 Difference]: Start difference. First operand 228 states and 300 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:48,344 INFO L93 Difference]: Finished difference Result 396 states and 524 transitions. [2024-11-16 11:54:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 11:54:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:48,346 INFO L225 Difference]: With dead ends: 396 [2024-11-16 11:54:48,346 INFO L226 Difference]: Without dead ends: 217 [2024-11-16 11:54:48,346 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 11:54:48,347 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:48,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 70 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-16 11:54:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-16 11:54:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 216 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 11:54:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 285 transitions. [2024-11-16 11:54:48,357 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 285 transitions. Word has length 72 [2024-11-16 11:54:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:48,357 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 285 transitions. [2024-11-16 11:54:48,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 285 transitions. [2024-11-16 11:54:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 11:54:48,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:48,358 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 11:54:48,359 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:48,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash -950324007, now seen corresponding path program 1 times [2024-11-16 11:54:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393495809] [2024-11-16 11:54:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:49,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:49,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393495809] [2024-11-16 11:54:49,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393495809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:49,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564665981] [2024-11-16 11:54:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:49,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:49,845 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 11:54:49,847 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 11:54:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:50,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-16 11:54:50,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:50,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:51,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564665981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:51,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:51,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2024-11-16 11:54:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153789657] [2024-11-16 11:54:51,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:51,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 11:54:51,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:51,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 11:54:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 11:54:51,714 INFO L87 Difference]: Start difference. First operand 217 states and 285 transitions. Second operand has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 11:54:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:53,237 INFO L93 Difference]: Finished difference Result 937 states and 1231 transitions. [2024-11-16 11:54:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-16 11:54:53,238 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 11:54:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:53,241 INFO L225 Difference]: With dead ends: 937 [2024-11-16 11:54:53,242 INFO L226 Difference]: Without dead ends: 769 [2024-11-16 11:54:53,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=595, Invalid=3187, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 11:54:53,244 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 390 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:53,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 671 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 11:54:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-16 11:54:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 534. [2024-11-16 11:54:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.3302063789868668) internal successors, (709), 533 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 11:54:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 709 transitions. [2024-11-16 11:54:53,261 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 709 transitions. Word has length 73 [2024-11-16 11:54:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:53,261 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 709 transitions. [2024-11-16 11:54:53,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 11:54:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 709 transitions. [2024-11-16 11:54:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 11:54:53,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:53,262 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:54:53,281 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 11:54:53,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 11:54:53,463 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:53,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 919651937, now seen corresponding path program 1 times [2024-11-16 11:54:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599557251] [2024-11-16 11:54:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599557251] [2024-11-16 11:54:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599557251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130174958] [2024-11-16 11:54:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:54,136 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 11:54:54,137 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 11:54:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:54,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-16 11:54:54,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:54,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:55,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130174958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:55,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:55,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 29 [2024-11-16 11:54:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748835785] [2024-11-16 11:54:55,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:55,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 11:54:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 11:54:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-16 11:54:55,099 INFO L87 Difference]: Start difference. First operand 534 states and 709 transitions. Second operand has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 29 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:56,287 INFO L93 Difference]: Finished difference Result 1423 states and 1907 transitions. [2024-11-16 11:54:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 11:54:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 29 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 11:54:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:56,297 INFO L225 Difference]: With dead ends: 1423 [2024-11-16 11:54:56,297 INFO L226 Difference]: Without dead ends: 929 [2024-11-16 11:54:56,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=1942, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 11:54:56,300 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 272 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:56,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 511 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 11:54:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2024-11-16 11:54:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 881. [2024-11-16 11:54:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.3375) internal successors, (1177), 880 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 11:54:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1177 transitions. [2024-11-16 11:54:56,322 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1177 transitions. Word has length 74 [2024-11-16 11:54:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:56,322 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1177 transitions. [2024-11-16 11:54:56,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 29 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1177 transitions. [2024-11-16 11:54:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 11:54:56,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:56,324 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, 1, 1, 1, 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 11:54:56,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 11:54:56,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:56,525 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:56,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash 353600205, now seen corresponding path program 1 times [2024-11-16 11:54:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:56,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215418930] [2024-11-16 11:54:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 11:54:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215418930] [2024-11-16 11:54:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215418930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:54:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:54:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:54:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064186610] [2024-11-16 11:54:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:54:57,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:54:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:54:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:54:57,053 INFO L87 Difference]: Start difference. First operand 881 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:57,187 INFO L93 Difference]: Finished difference Result 1724 states and 2307 transitions. [2024-11-16 11:54:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:54:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 11:54:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:57,193 INFO L225 Difference]: With dead ends: 1724 [2024-11-16 11:54:57,193 INFO L226 Difference]: Without dead ends: 883 [2024-11-16 11:54:57,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:54:57,195 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:57,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 69 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:54:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-16 11:54:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2024-11-16 11:54:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.336734693877551) internal successors, (1179), 882 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states 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 11:54:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1179 transitions. [2024-11-16 11:54:57,228 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1179 transitions. Word has length 75 [2024-11-16 11:54:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:57,229 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1179 transitions. [2024-11-16 11:54:57,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:54:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1179 transitions. [2024-11-16 11:54:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 11:54:57,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:57,231 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:54:57,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 11:54:57,231 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:54:57,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:54:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 908432330, now seen corresponding path program 2 times [2024-11-16 11:54:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:54:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350535466] [2024-11-16 11:54:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:54:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:54:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:54:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:54:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:54:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350535466] [2024-11-16 11:54:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350535466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:54:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102465884] [2024-11-16 11:54:57,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 11:54:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:54:57,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:54:57,870 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 11:54:57,872 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 11:54:58,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 11:54:58,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 11:54:58,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 11:54:58,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:54:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 11:54:58,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:54:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 11:54:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102465884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:54:58,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:54:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 27 [2024-11-16 11:54:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997480621] [2024-11-16 11:54:58,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:54:58,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 11:54:58,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:54:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 11:54:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2024-11-16 11:54:58,944 INFO L87 Difference]: Start difference. First operand 883 states and 1179 transitions. Second operand has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 27 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 11:54:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:54:59,946 INFO L93 Difference]: Finished difference Result 2922 states and 3876 transitions. [2024-11-16 11:54:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 11:54:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 27 states have internal predecessors, (233), 0 states have call successors, (0), 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 11:54:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:54:59,953 INFO L225 Difference]: With dead ends: 2922 [2024-11-16 11:54:59,953 INFO L226 Difference]: Without dead ends: 2081 [2024-11-16 11:54:59,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 11:54:59,956 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 322 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 11:54:59,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 693 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 11:54:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2024-11-16 11:54:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1395. [2024-11-16 11:54:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1394 states have (on average 1.3235294117647058) internal successors, (1845), 1394 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states 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 11:54:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1845 transitions. [2024-11-16 11:54:59,994 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1845 transitions. Word has length 92 [2024-11-16 11:54:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:54:59,994 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 1845 transitions. [2024-11-16 11:54:59,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 27 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 11:54:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1845 transitions. [2024-11-16 11:54:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-16 11:54:59,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:54:59,997 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:00,017 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 11:55:00,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:00,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:00,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1155595810, now seen corresponding path program 3 times [2024-11-16 11:55:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237778629] [2024-11-16 11:55:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 11:55:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237778629] [2024-11-16 11:55:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237778629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298449216] [2024-11-16 11:55:01,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 11:55:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:01,679 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 11:55:01,681 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 11:55:02,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 11:55:02,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 11:55:02,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-16 11:55:02,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 11:55:02,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 11:55:04,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298449216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:04,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:04,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 22] total 37 [2024-11-16 11:55:04,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430991295] [2024-11-16 11:55:04,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:04,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 11:55:04,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:04,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 11:55:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 11:55:04,206 INFO L87 Difference]: Start difference. First operand 1395 states and 1845 transitions. Second operand has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 11:55:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:07,898 INFO L93 Difference]: Finished difference Result 3168 states and 4158 transitions. [2024-11-16 11:55:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-16 11:55:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 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 11:55:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:07,903 INFO L225 Difference]: With dead ends: 3168 [2024-11-16 11:55:07,903 INFO L226 Difference]: Without dead ends: 1815 [2024-11-16 11:55:07,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1274, Invalid=13006, Unknown=0, NotChecked=0, Total=14280 [2024-11-16 11:55:07,908 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 346 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:07,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 846 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 11:55:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2024-11-16 11:55:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1550. [2024-11-16 11:55:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 1.2692059393156876) internal successors, (1966), 1549 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states 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 11:55:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 1966 transitions. [2024-11-16 11:55:07,944 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 1966 transitions. Word has length 93 [2024-11-16 11:55:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:07,944 INFO L471 AbstractCegarLoop]: Abstraction has 1550 states and 1966 transitions. [2024-11-16 11:55:07,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 11:55:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 1966 transitions. [2024-11-16 11:55:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 11:55:07,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:07,946 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:07,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 11:55:08,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 11:55:08,148 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:08,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1728659901, now seen corresponding path program 2 times [2024-11-16 11:55:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182862304] [2024-11-16 11:55:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 11:55:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182862304] [2024-11-16 11:55:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182862304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695877208] [2024-11-16 11:55:08,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 11:55:08,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:08,911 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 11:55:08,913 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 11:55:09,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 11:55:09,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 11:55:09,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 11:55:09,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:09,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 11:55:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695877208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:09,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 8] total 20 [2024-11-16 11:55:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433252483] [2024-11-16 11:55:09,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:09,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 11:55:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 11:55:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 11:55:09,850 INFO L87 Difference]: Start difference. First operand 1550 states and 1966 transitions. Second operand has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 11:55:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:10,489 INFO L93 Difference]: Finished difference Result 3356 states and 4253 transitions. [2024-11-16 11:55:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 11:55:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 0 states have call successors, (0), 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 11:55:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:10,495 INFO L225 Difference]: With dead ends: 3356 [2024-11-16 11:55:10,495 INFO L226 Difference]: Without dead ends: 1848 [2024-11-16 11:55:10,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2024-11-16 11:55:10,499 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 313 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:10,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 452 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:55:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2024-11-16 11:55:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1747. [2024-11-16 11:55:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.263459335624284) internal successors, (2206), 1746 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states 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 11:55:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2206 transitions. [2024-11-16 11:55:10,539 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2206 transitions. Word has length 95 [2024-11-16 11:55:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:10,540 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2206 transitions. [2024-11-16 11:55:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 11:55:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2206 transitions. [2024-11-16 11:55:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 11:55:10,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:10,542 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:10,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 11:55:10,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 11:55:10,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:10,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash -336956687, now seen corresponding path program 3 times [2024-11-16 11:55:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:10,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513077245] [2024-11-16 11:55:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 11:55:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513077245] [2024-11-16 11:55:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513077245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905446252] [2024-11-16 11:55:11,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 11:55:11,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:11,583 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 11:55:11,584 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 11:55:12,242 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 11:55:12,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 11:55:12,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-16 11:55:12,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 11:55:13,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 11:55:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905446252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:14,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 15] total 35 [2024-11-16 11:55:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818002297] [2024-11-16 11:55:14,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:14,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 11:55:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 11:55:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 11:55:14,545 INFO L87 Difference]: Start difference. First operand 1747 states and 2206 transitions. Second operand has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 35 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 11:55:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:17,359 INFO L93 Difference]: Finished difference Result 4756 states and 6005 transitions. [2024-11-16 11:55:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-16 11:55:17,360 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 35 states have internal predecessors, (207), 0 states have call successors, (0), 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 11:55:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:17,367 INFO L225 Difference]: With dead ends: 4756 [2024-11-16 11:55:17,368 INFO L226 Difference]: Without dead ends: 2996 [2024-11-16 11:55:17,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=892, Invalid=6248, Unknown=0, NotChecked=0, Total=7140 [2024-11-16 11:55:17,371 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 381 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:17,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 974 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 11:55:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2024-11-16 11:55:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2714. [2024-11-16 11:55:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.2594913380022115) internal successors, (3417), 2713 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 11:55:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3417 transitions. [2024-11-16 11:55:17,422 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3417 transitions. Word has length 96 [2024-11-16 11:55:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:17,422 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 3417 transitions. [2024-11-16 11:55:17,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 35 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 11:55:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3417 transitions. [2024-11-16 11:55:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 11:55:17,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:17,425 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:17,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 11:55:17,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:17,629 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:17,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 800389651, now seen corresponding path program 4 times [2024-11-16 11:55:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:17,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019705238] [2024-11-16 11:55:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:17,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 141 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 11:55:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:18,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019705238] [2024-11-16 11:55:18,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019705238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:55:18,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660974890] [2024-11-16 11:55:18,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 11:55:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:18,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:55:18,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 11:55:19,176 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 11:55:19,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 11:55:19,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 11:55:19,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:55:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 11:55:19,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:55:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 105 proven. 40 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 11:55:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660974890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:55:19,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:55:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 16 [2024-11-16 11:55:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626208563] [2024-11-16 11:55:19,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:55:19,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 11:55:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 11:55:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:55:19,602 INFO L87 Difference]: Start difference. First operand 2714 states and 3417 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:19,811 INFO L93 Difference]: Finished difference Result 2755 states and 3459 transitions. [2024-11-16 11:55:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:55:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-11-16 11:55:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:19,812 INFO L225 Difference]: With dead ends: 2755 [2024-11-16 11:55:19,812 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 11:55:19,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-16 11:55:19,814 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:19,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 170 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:55:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 11:55:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 11:55:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 11:55:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 11:55:19,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2024-11-16 11:55:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:19,816 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 11:55:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:55:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 11:55:19,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 11:55:19,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 11:55:19,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 11:55:20,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:55:20,027 INFO L407 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:55:20,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 11:55:20,134 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 11:55:20,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:55:20 BoogieIcfgContainer [2024-11-16 11:55:20,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 11:55:20,144 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 11:55:20,144 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 11:55:20,144 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 11:55:20,145 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:54:31" (3/4) ... [2024-11-16 11:55:20,147 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 11:55:20,160 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-16 11:55:20,161 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 11:55:20,162 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 11:55:20,162 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 11:55:20,269 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 11:55:20,270 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 11:55:20,270 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 11:55:20,270 INFO L158 Benchmark]: Toolchain (without parser) took 50449.21ms. Allocated memory was 136.3MB in the beginning and 973.1MB in the end (delta: 836.8MB). Free memory was 64.4MB in the beginning and 634.7MB in the end (delta: -570.3MB). Peak memory consumption was 267.1MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,270 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 11:55:20,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.86ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 64.1MB in the beginning and 143.3MB in the end (delta: -79.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.88ms. Allocated memory is still 182.5MB. Free memory was 143.3MB in the beginning and 137.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,271 INFO L158 Benchmark]: Boogie Preprocessor took 72.25ms. Allocated memory is still 182.5MB. Free memory was 137.0MB in the beginning and 132.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,273 INFO L158 Benchmark]: IcfgBuilder took 714.13ms. Allocated memory is still 182.5MB. Free memory was 132.8MB in the beginning and 94.0MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,273 INFO L158 Benchmark]: TraceAbstraction took 49060.30ms. Allocated memory was 182.5MB in the beginning and 973.1MB in the end (delta: 790.6MB). Free memory was 94.0MB in the beginning and 642.0MB in the end (delta: -548.0MB). Peak memory consumption was 243.7MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,273 INFO L158 Benchmark]: Witness Printer took 125.97ms. Allocated memory is still 973.1MB. Free memory was 642.0MB in the beginning and 634.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 11:55:20,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.86ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 64.1MB in the beginning and 143.3MB in the end (delta: -79.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.88ms. Allocated memory is still 182.5MB. Free memory was 143.3MB in the beginning and 137.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.25ms. Allocated memory is still 182.5MB. Free memory was 137.0MB in the beginning and 132.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 714.13ms. Allocated memory is still 182.5MB. Free memory was 132.8MB in the beginning and 94.0MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 49060.30ms. Allocated memory was 182.5MB in the beginning and 973.1MB in the end (delta: 790.6MB). Free memory was 94.0MB in the beginning and 642.0MB in the end (delta: -548.0MB). Peak memory consumption was 243.7MB. Max. memory is 16.1GB. * Witness Printer took 125.97ms. Allocated memory is still 973.1MB. Free memory was 642.0MB in the beginning and 634.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.9s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4059 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4059 mSDsluCounter, 7562 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6624 mSDsCounter, 164 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18237 IncrementalHoareTripleChecker+Invalid, 18401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 164 mSolverCounterUnsat, 938 mSDtfsCounter, 18237 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2226 GetRequests, 1604 SyntacticMatches, 3 SemanticMatches, 619 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11777 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2714occurred in iteration=19, InterpolantAutomatonStates: 415, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 1914 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 2074 NumberOfCodeBlocks, 2011 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2895 ConstructedInterpolants, 0 QuantifiedInterpolants, 22839 SizeOfPredicates, 58 NumberOfNonLiveVariables, 6063 ConjunctsInSsa, 701 ConjunctsInUnsatCore, 42 InterpolantComputations, 9 PerfectInterpolantSequences, 1932/2346 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 11:55:20,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE