./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.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-dev-4a390ef-m [2024-10-24 04:58:43,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 04:58:44,061 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 04:58:44,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 04:58:44,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 04:58:44,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 04:58:44,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 04:58:44,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 04:58:44,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 04:58:44,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 04:58:44,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 04:58:44,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 04:58:44,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 04:58:44,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 04:58:44,113 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 04:58:44,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 04:58:44,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 04:58:44,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 04:58:44,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 04:58:44,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 04:58:44,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 04:58:44,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 04:58:44,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 04:58:44,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 04:58:44,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 04:58:44,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 04:58:44,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 04:58:44,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 04:58:44,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 04:58:44,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:58:44,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 04:58:44,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 04:58:44,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 04:58:44,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 04:58:44,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 04:58:44,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 04:58:44,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 04:58:44,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 04:58:44,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 04:58:44,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2024-10-24 04:58:44,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 04:58:44,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 04:58:44,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 04:58:44,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 04:58:44,401 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 04:58:44,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-24 04:58:45,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 04:58:46,101 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 04:58:46,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-24 04:58:46,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66608da4/299fbfbe47974ea982b18cd9021779ff/FLAG2098ddc2f [2024-10-24 04:58:46,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66608da4/299fbfbe47974ea982b18cd9021779ff [2024-10-24 04:58:46,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 04:58:46,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 04:58:46,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 04:58:46,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 04:58:46,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 04:58:46,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbd7d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46, skipping insertion in model container [2024-10-24 04:58:46,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 04:58:46,337 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-10-24 04:58:46,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:58:46,464 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 04:58:46,474 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-10-24 04:58:46,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:58:46,532 INFO L204 MainTranslator]: Completed translation [2024-10-24 04:58:46,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46 WrapperNode [2024-10-24 04:58:46,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 04:58:46,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 04:58:46,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 04:58:46,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 04:58:46,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,605 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 341 [2024-10-24 04:58:46,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 04:58:46,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 04:58:46,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 04:58:46,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 04:58:46,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,672 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 04:58:46,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 04:58:46,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 04:58:46,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 04:58:46,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 04:58:46,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (1/1) ... [2024-10-24 04:58:46,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:58:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:46,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 04:58:46,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 04:58:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 04:58:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 04:58:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 04:58:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 04:58:46,952 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 04:58:46,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 04:58:47,505 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-10-24 04:58:47,506 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 04:58:47,543 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 04:58:47,543 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 04:58:47,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:47 BoogieIcfgContainer [2024-10-24 04:58:47,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 04:58:47,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 04:58:47,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 04:58:47,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 04:58:47,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:58:46" (1/3) ... [2024-10-24 04:58:47,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5036db26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:47, skipping insertion in model container [2024-10-24 04:58:47,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:46" (2/3) ... [2024-10-24 04:58:47,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5036db26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:47, skipping insertion in model container [2024-10-24 04:58:47,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:47" (3/3) ... [2024-10-24 04:58:47,553 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-24 04:58:47,570 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 04:58:47,570 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 04:58:47,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 04:58:47,662 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;@4cc65fa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 04:58:47,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 04:58:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-24 04:58:47,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:47,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:47,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:47,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2100058872, now seen corresponding path program 1 times [2024-10-24 04:58:47,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:47,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127687756] [2024-10-24 04:58:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127687756] [2024-10-24 04:58:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127687756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:48,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157763143] [2024-10-24 04:58:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:48,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:48,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:48,380 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:48,452 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2024-10-24 04:58:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-24 04:58:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:48,466 INFO L225 Difference]: With dead ends: 98 [2024-10-24 04:58:48,467 INFO L226 Difference]: Without dead ends: 60 [2024-10-24 04:58:48,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:48,473 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:48,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-24 04:58:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-24 04:58:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions. [2024-10-24 04:58:48,516 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 24 [2024-10-24 04:58:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:48,517 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 86 transitions. [2024-10-24 04:58:48,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions. [2024-10-24 04:58:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 04:58:48,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:48,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 04:58:48,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -675620309, now seen corresponding path program 1 times [2024-10-24 04:58:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270563729] [2024-10-24 04:58:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270563729] [2024-10-24 04:58:48,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270563729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113346758] [2024-10-24 04:58:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:48,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:48,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:48,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:48,694 INFO L87 Difference]: Start difference. First operand 60 states and 86 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:48,732 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2024-10-24 04:58:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-24 04:58:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:48,736 INFO L225 Difference]: With dead ends: 101 [2024-10-24 04:58:48,736 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 04:58:48,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:48,737 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:48,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:48,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 04:58:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-24 04:58:48,748 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) [2024-10-24 04:58:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-24 04:58:48,751 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 25 [2024-10-24 04:58:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:48,752 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-24 04:58:48,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-24 04:58:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 04:58:48,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:48,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:48,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 04:58:48,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:48,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash -567358911, now seen corresponding path program 1 times [2024-10-24 04:58:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:48,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071308543] [2024-10-24 04:58:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:49,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:49,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071308543] [2024-10-24 04:58:49,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071308543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:49,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:49,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127072657] [2024-10-24 04:58:49,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:49,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:49,070 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. 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) [2024-10-24 04:58:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:49,111 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2024-10-24 04:58:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:49,112 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 [2024-10-24 04:58:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:49,113 INFO L225 Difference]: With dead ends: 103 [2024-10-24 04:58:49,114 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 04:58:49,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:49,116 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 6 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:49,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 223 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 04:58:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-24 04:58:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-24 04:58:49,128 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 26 [2024-10-24 04:58:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:49,129 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-24 04:58:49,129 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) [2024-10-24 04:58:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-24 04:58:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-24 04:58:49,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:49,131 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] [2024-10-24 04:58:49,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 04:58:49,132 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:49,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash 500629874, now seen corresponding path program 1 times [2024-10-24 04:58:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:49,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862456438] [2024-10-24 04:58:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862456438] [2024-10-24 04:58:49,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862456438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:49,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:49,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 04:58:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709952441] [2024-10-24 04:58:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:49,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 04:58:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 04:58:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:49,605 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 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) [2024-10-24 04:58:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:49,735 INFO L93 Difference]: Finished difference Result 113 states and 157 transitions. [2024-10-24 04:58:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:58:49,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 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 [2024-10-24 04:58:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:49,737 INFO L225 Difference]: With dead ends: 113 [2024-10-24 04:58:49,737 INFO L226 Difference]: Without dead ends: 72 [2024-10-24 04:58:49,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-24 04:58:49,739 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 88 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:49,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 440 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:58:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-24 04:58:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-10-24 04:58:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 70 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-10-24 04:58:49,745 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 27 [2024-10-24 04:58:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:49,745 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-10-24 04:58:49,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 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) [2024-10-24 04:58:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-10-24 04:58:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 04:58:49,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:49,746 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] [2024-10-24 04:58:49,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 04:58:49,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:49,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1340996674, now seen corresponding path program 1 times [2024-10-24 04:58:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623568877] [2024-10-24 04:58:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:50,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623568877] [2024-10-24 04:58:50,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623568877] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:50,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 04:58:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368375071] [2024-10-24 04:58:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:50,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 04:58:50,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 04:58:50,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 04:58:50,461 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:50,660 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2024-10-24 04:58:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 04:58:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-24 04:58:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:50,662 INFO L225 Difference]: With dead ends: 126 [2024-10-24 04:58:50,662 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 04:58:50,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-24 04:58:50,663 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 92 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:50,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 542 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:58:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 04:58:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-10-24 04:58:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 74 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2024-10-24 04:58:50,673 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 28 [2024-10-24 04:58:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:50,673 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2024-10-24 04:58:50,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2024-10-24 04:58:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 04:58:50,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:50,674 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] [2024-10-24 04:58:50,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 04:58:50,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:50,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash -815201709, now seen corresponding path program 1 times [2024-10-24 04:58:50,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:50,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250939051] [2024-10-24 04:58:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250939051] [2024-10-24 04:58:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250939051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:58:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651198085] [2024-10-24 04:58:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:50,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:58:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:58:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:58:50,820 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2024-10-24 04:58:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:50,945 INFO L93 Difference]: Finished difference Result 158 states and 213 transitions. [2024-10-24 04:58:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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 [2024-10-24 04:58:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:50,946 INFO L225 Difference]: With dead ends: 158 [2024-10-24 04:58:50,948 INFO L226 Difference]: Without dead ends: 104 [2024-10-24 04:58:50,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:50,951 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 130 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:50,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 248 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:58:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-24 04:58:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 77. [2024-10-24 04:58:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.394736842105263) internal successors, (106), 76 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2024-10-24 04:58:50,964 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 28 [2024-10-24 04:58:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:50,964 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2024-10-24 04:58:50,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2024-10-24 04:58:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2024-10-24 04:58:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-24 04:58:50,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:50,966 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] [2024-10-24 04:58:50,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 04:58:50,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1351645999, now seen corresponding path program 1 times [2024-10-24 04:58:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996167183] [2024-10-24 04:58:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:51,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996167183] [2024-10-24 04:58:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996167183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:51,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333974627] [2024-10-24 04:58:51,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:51,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:58:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:58:51,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:58:51,176 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2024-10-24 04:58:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:51,215 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2024-10-24 04:58:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:51,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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 [2024-10-24 04:58:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:51,217 INFO L225 Difference]: With dead ends: 137 [2024-10-24 04:58:51,217 INFO L226 Difference]: Without dead ends: 83 [2024-10-24 04:58:51,218 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 [2024-10-24 04:58:51,219 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:51,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 228 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-24 04:58:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-24 04:58:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 82 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2024-10-24 04:58:51,231 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 29 [2024-10-24 04:58:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:51,231 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2024-10-24 04:58:51,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2024-10-24 04:58:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2024-10-24 04:58:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 04:58:51,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:51,232 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:51,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 04:58:51,232 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2010434521, now seen corresponding path program 1 times [2024-10-24 04:58:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697078555] [2024-10-24 04:58:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:51,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:51,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697078555] [2024-10-24 04:58:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697078555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:51,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:51,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:58:51,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026649673] [2024-10-24 04:58:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:58:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:58:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:58:51,397 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand has 6 states, 6 states have (on average 5.0) 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) [2024-10-24 04:58:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:51,443 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2024-10-24 04:58:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) 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 [2024-10-24 04:58:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:51,444 INFO L225 Difference]: With dead ends: 155 [2024-10-24 04:58:51,444 INFO L226 Difference]: Without dead ends: 95 [2024-10-24 04:58:51,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:51,445 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 98 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:51,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 226 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-24 04:58:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2024-10-24 04:58:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2024-10-24 04:58:51,452 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 30 [2024-10-24 04:58:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:51,452 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2024-10-24 04:58:51,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) 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) [2024-10-24 04:58:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2024-10-24 04:58:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 04:58:51,457 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:51,457 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] [2024-10-24 04:58:51,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 04:58:51,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:51,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1222470321, now seen corresponding path program 1 times [2024-10-24 04:58:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:51,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855614832] [2024-10-24 04:58:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:51,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855614832] [2024-10-24 04:58:51,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855614832] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:58:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527665293] [2024-10-24 04:58:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:51,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:51,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:51,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:58:51,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 04:58:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:52,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 04:58:52,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:58:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:52,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:58:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527665293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:58:52,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:58:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-10-24 04:58:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987540105] [2024-10-24 04:58:52,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:58:52,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 04:58:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:52,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 04:58:52,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-24 04:58:52,764 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:53,356 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-10-24 04:58:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 04:58:53,357 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2024-10-24 04:58:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:53,358 INFO L225 Difference]: With dead ends: 199 [2024-10-24 04:58:53,358 INFO L226 Difference]: Without dead ends: 139 [2024-10-24 04:58:53,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-10-24 04:58:53,361 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 320 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:53,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 202 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:58:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-24 04:58:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 109. [2024-10-24 04:58:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 143 transitions. [2024-10-24 04:58:53,369 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 143 transitions. Word has length 48 [2024-10-24 04:58:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:53,369 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 143 transitions. [2024-10-24 04:58:53,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 143 transitions. [2024-10-24 04:58:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 04:58:53,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:53,371 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] [2024-10-24 04:58:53,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 04:58:53,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:53,573 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1745266421, now seen corresponding path program 1 times [2024-10-24 04:58:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890899664] [2024-10-24 04:58:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:54,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:54,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890899664] [2024-10-24 04:58:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890899664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:58:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058977547] [2024-10-24 04:58:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:54,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:54,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:58:54,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 04:58:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:54,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-24 04:58:54,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:58:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:55,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:58:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058977547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:58:56,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:58:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 19 [2024-10-24 04:58:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670259082] [2024-10-24 04:58:56,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:58:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 04:58:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 04:58:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-10-24 04:58:56,084 INFO L87 Difference]: Start difference. First operand 109 states and 143 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:56,581 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2024-10-24 04:58:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 04:58:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 04:58:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:56,583 INFO L225 Difference]: With dead ends: 181 [2024-10-24 04:58:56,583 INFO L226 Difference]: Without dead ends: 121 [2024-10-24 04:58:56,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2024-10-24 04:58:56,584 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 146 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:56,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 159 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:58:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-24 04:58:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2024-10-24 04:58:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 110 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2024-10-24 04:58:56,589 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 51 [2024-10-24 04:58:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:56,590 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2024-10-24 04:58:56,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2024-10-24 04:58:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 04:58:56,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:56,592 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] [2024-10-24 04:58:56,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 04:58:56,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 04:58:56,793 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:56,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1655283349, now seen corresponding path program 1 times [2024-10-24 04:58:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685417900] [2024-10-24 04:58:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685417900] [2024-10-24 04:58:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685417900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:58:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277566051] [2024-10-24 04:58:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:57,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:57,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:58:57,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 04:58:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:57,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-24 04:58:57,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:58:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:58,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:58:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277566051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:58:58,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:58:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 30 [2024-10-24 04:58:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234464200] [2024-10-24 04:58:58,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:58:58,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 04:58:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 04:58:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2024-10-24 04:58:58,773 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:00,446 INFO L93 Difference]: Finished difference Result 428 states and 554 transitions. [2024-10-24 04:59:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-24 04:59:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 04:59:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:00,450 INFO L225 Difference]: With dead ends: 428 [2024-10-24 04:59:00,451 INFO L226 Difference]: Without dead ends: 368 [2024-10-24 04:59:00,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=553, Invalid=2987, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 04:59:00,453 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 594 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:00,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 565 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 04:59:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-24 04:59:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 227. [2024-10-24 04:59:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3274336283185841) internal successors, (300), 226 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) [2024-10-24 04:59:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2024-10-24 04:59:00,470 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 69 [2024-10-24 04:59:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:00,471 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2024-10-24 04:59:00,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2024-10-24 04:59:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 04:59:00,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:00,472 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] [2024-10-24 04:59:00,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 04:59:00,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:00,677 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:00,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1345056242, now seen corresponding path program 1 times [2024-10-24 04:59:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414078520] [2024-10-24 04:59:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:00,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 04:59:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414078520] [2024-10-24 04:59:02,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414078520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:59:02,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:59:02,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:59:02,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592320200] [2024-10-24 04:59:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:59:02,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:59:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:59:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:59:02,072 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:02,222 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2024-10-24 04:59:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:59:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 04:59:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:02,224 INFO L225 Difference]: With dead ends: 394 [2024-10-24 04:59:02,224 INFO L226 Difference]: Without dead ends: 216 [2024-10-24 04:59:02,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:59:02,225 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:02,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:59:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-10-24 04:59:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-10-24 04:59:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3255813953488371) internal successors, (285), 215 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) [2024-10-24 04:59:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2024-10-24 04:59:02,233 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 70 [2024-10-24 04:59:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:02,234 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2024-10-24 04:59:02,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2024-10-24 04:59:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 04:59:02,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:02,235 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] [2024-10-24 04:59:02,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 04:59:02,236 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:02,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2145830129, now seen corresponding path program 1 times [2024-10-24 04:59:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863220065] [2024-10-24 04:59:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:59:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863220065] [2024-10-24 04:59:04,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863220065] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:59:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560920736] [2024-10-24 04:59:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:04,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:59:04,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:59:04,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 04:59:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:04,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-24 04:59:04,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:59:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:59:05,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:59:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:59:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560920736] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:59:06,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:59:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2024-10-24 04:59:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463179584] [2024-10-24 04:59:06,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:59:06,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-24 04:59:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-24 04:59:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 04:59:06,358 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:07,927 INFO L93 Difference]: Finished difference Result 1012 states and 1328 transitions. [2024-10-24 04:59:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-24 04:59:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 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 [2024-10-24 04:59:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:07,933 INFO L225 Difference]: With dead ends: 1012 [2024-10-24 04:59:07,933 INFO L226 Difference]: Without dead ends: 845 [2024-10-24 04:59:07,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=625, Invalid=3407, Unknown=0, NotChecked=0, Total=4032 [2024-10-24 04:59:07,936 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 723 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:07,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 600 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 04:59:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-24 04:59:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 533. [2024-10-24 04:59:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.3327067669172932) internal successors, (709), 532 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) [2024-10-24 04:59:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 709 transitions. [2024-10-24 04:59:07,957 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 709 transitions. Word has length 71 [2024-10-24 04:59:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:07,958 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 709 transitions. [2024-10-24 04:59:07,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 709 transitions. [2024-10-24 04:59:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 04:59:07,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:07,959 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] [2024-10-24 04:59:07,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 04:59:08,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:08,164 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:08,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1407941793, now seen corresponding path program 1 times [2024-10-24 04:59:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773748611] [2024-10-24 04:59:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:59:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:08,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773748611] [2024-10-24 04:59:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773748611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:59:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:59:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:59:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111373528] [2024-10-24 04:59:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:59:08,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:59:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:59:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:59:08,790 INFO L87 Difference]: Start difference. First operand 533 states and 709 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:09,002 INFO L93 Difference]: Finished difference Result 1249 states and 1656 transitions. [2024-10-24 04:59:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 04:59:09,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2024-10-24 04:59:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:09,006 INFO L225 Difference]: With dead ends: 1249 [2024-10-24 04:59:09,007 INFO L226 Difference]: Without dead ends: 756 [2024-10-24 04:59:09,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:59:09,008 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 80 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:09,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 133 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 04:59:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-10-24 04:59:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 754. [2024-10-24 04:59:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.3160690571049136) internal successors, (991), 753 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 991 transitions. [2024-10-24 04:59:09,047 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 991 transitions. Word has length 72 [2024-10-24 04:59:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:09,047 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 991 transitions. [2024-10-24 04:59:09,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 991 transitions. [2024-10-24 04:59:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 04:59:09,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:09,051 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] [2024-10-24 04:59:09,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 04:59:09,051 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:09,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:09,051 INFO L85 PathProgramCache]: Analyzing trace with hash -233629383, now seen corresponding path program 1 times [2024-10-24 04:59:09,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:09,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330896117] [2024-10-24 04:59:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:09,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 04:59:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:09,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330896117] [2024-10-24 04:59:09,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330896117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:59:09,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:59:09,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:59:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367816568] [2024-10-24 04:59:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:59:09,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:59:09,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:59:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:59:09,595 INFO L87 Difference]: Start difference. First operand 754 states and 991 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:09,767 INFO L93 Difference]: Finished difference Result 1470 states and 1934 transitions. [2024-10-24 04:59:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:59:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 04:59:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:09,771 INFO L225 Difference]: With dead ends: 1470 [2024-10-24 04:59:09,771 INFO L226 Difference]: Without dead ends: 756 [2024-10-24 04:59:09,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:59:09,773 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 97 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:09,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 67 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:59:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-10-24 04:59:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-10-24 04:59:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.3152317880794702) internal successors, (993), 755 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 993 transitions. [2024-10-24 04:59:09,812 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 993 transitions. Word has length 73 [2024-10-24 04:59:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:09,812 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 993 transitions. [2024-10-24 04:59:09,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 993 transitions. [2024-10-24 04:59:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 04:59:09,814 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:09,814 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] [2024-10-24 04:59:09,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 04:59:09,815 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:09,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -991709578, now seen corresponding path program 2 times [2024-10-24 04:59:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162454250] [2024-10-24 04:59:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:59:10,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162454250] [2024-10-24 04:59:10,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162454250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:59:10,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331956996] [2024-10-24 04:59:10,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 04:59:10,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:59:10,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:59:10,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 04:59:11,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 04:59:11,013 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 04:59:11,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-24 04:59:11,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:59:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 04:59:11,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:59:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 74 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 04:59:12,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331956996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:59:12,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:59:12,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 14] total 29 [2024-10-24 04:59:12,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097592994] [2024-10-24 04:59:12,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:59:12,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 04:59:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 04:59:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-10-24 04:59:12,267 INFO L87 Difference]: Start difference. First operand 756 states and 993 transitions. Second operand has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:13,678 INFO L93 Difference]: Finished difference Result 2482 states and 3262 transitions. [2024-10-24 04:59:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 04:59:13,679 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-24 04:59:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:13,686 INFO L225 Difference]: With dead ends: 2482 [2024-10-24 04:59:13,686 INFO L226 Difference]: Without dead ends: 1768 [2024-10-24 04:59:13,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=1770, Unknown=0, NotChecked=0, Total=2070 [2024-10-24 04:59:13,689 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 201 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:13,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 717 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 04:59:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-10-24 04:59:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1666. [2024-10-24 04:59:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.3033033033033032) internal successors, (2170), 1665 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2170 transitions. [2024-10-24 04:59:13,739 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2170 transitions. Word has length 90 [2024-10-24 04:59:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:13,739 INFO L471 AbstractCegarLoop]: Abstraction has 1666 states and 2170 transitions. [2024-10-24 04:59:13,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2170 transitions. [2024-10-24 04:59:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 04:59:13,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:13,742 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] [2024-10-24 04:59:13,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 04:59:13,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 04:59:13,947 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:13,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1269954600, now seen corresponding path program 3 times [2024-10-24 04:59:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:13,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261775109] [2024-10-24 04:59:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 04:59:15,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261775109] [2024-10-24 04:59:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261775109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:59:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664446601] [2024-10-24 04:59:15,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 04:59:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:59:15,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:59:15,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 04:59:16,039 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 04:59:16,039 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 04:59:16,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-10-24 04:59:16,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:59:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 04:59:17,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:59:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 04:59:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664446601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:59:20,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:59:20,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 32] total 53 [2024-10-24 04:59:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864586159] [2024-10-24 04:59:20,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:59:20,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-24 04:59:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-24 04:59:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2448, Unknown=0, NotChecked=0, Total=2756 [2024-10-24 04:59:20,148 INFO L87 Difference]: Start difference. First operand 1666 states and 2170 transitions. Second operand has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:32,361 INFO L93 Difference]: Finished difference Result 3948 states and 5138 transitions. [2024-10-24 04:59:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2024-10-24 04:59:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 91 [2024-10-24 04:59:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:32,368 INFO L225 Difference]: With dead ends: 3948 [2024-10-24 04:59:32,369 INFO L226 Difference]: Without dead ends: 2262 [2024-10-24 04:59:32,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14549 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=3417, Invalid=45203, Unknown=0, NotChecked=0, Total=48620 [2024-10-24 04:59:32,381 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 557 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 6896 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 6934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:32,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 613 Invalid, 6934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 6896 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-24 04:59:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2024-10-24 04:59:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1888. [2024-10-24 04:59:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.2655007949125596) internal successors, (2388), 1887 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2388 transitions. [2024-10-24 04:59:32,439 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2388 transitions. Word has length 91 [2024-10-24 04:59:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:32,439 INFO L471 AbstractCegarLoop]: Abstraction has 1888 states and 2388 transitions. [2024-10-24 04:59:32,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2388 transitions. [2024-10-24 04:59:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 04:59:32,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:32,441 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] [2024-10-24 04:59:32,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 04:59:32,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 04:59:32,642 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:32,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1477605391, now seen corresponding path program 2 times [2024-10-24 04:59:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:32,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760332926] [2024-10-24 04:59:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 04:59:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760332926] [2024-10-24 04:59:33,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760332926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:59:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437452817] [2024-10-24 04:59:33,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 04:59:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:59:33,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 04:59:33,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 04:59:34,130 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 04:59:34,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 04:59:34,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-24 04:59:34,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:59:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 04:59:34,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:59:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 29 proven. 58 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 04:59:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437452817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:59:35,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:59:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 16] total 30 [2024-10-24 04:59:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206506831] [2024-10-24 04:59:35,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:59:35,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 04:59:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 04:59:35,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-10-24 04:59:35,816 INFO L87 Difference]: Start difference. First operand 1888 states and 2388 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:38,027 INFO L93 Difference]: Finished difference Result 4641 states and 5914 transitions. [2024-10-24 04:59:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-24 04:59:38,028 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-24 04:59:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:38,036 INFO L225 Difference]: With dead ends: 4641 [2024-10-24 04:59:38,037 INFO L226 Difference]: Without dead ends: 2795 [2024-10-24 04:59:38,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=968, Invalid=6004, Unknown=0, NotChecked=0, Total=6972 [2024-10-24 04:59:38,041 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 622 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:38,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 734 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 04:59:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-10-24 04:59:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2512. [2024-10-24 04:59:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2511 states have (on average 1.2560732775786538) internal successors, (3154), 2511 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3154 transitions. [2024-10-24 04:59:38,102 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3154 transitions. Word has length 94 [2024-10-24 04:59:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:38,102 INFO L471 AbstractCegarLoop]: Abstraction has 2512 states and 3154 transitions. [2024-10-24 04:59:38,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3154 transitions. [2024-10-24 04:59:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 04:59:38,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:59:38,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:59:38,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 04:59:38,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:59:38,306 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:59:38,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:59:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1242406473, now seen corresponding path program 1 times [2024-10-24 04:59:38,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:59:38,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750204860] [2024-10-24 04:59:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:59:38,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:59:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:59:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 04:59:38,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:59:38,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750204860] [2024-10-24 04:59:38,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750204860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:59:38,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:59:38,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:59:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936420828] [2024-10-24 04:59:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:59:38,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:59:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:59:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:59:38,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:59:38,948 INFO L87 Difference]: Start difference. First operand 2512 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:59:38,983 INFO L93 Difference]: Finished difference Result 2598 states and 3248 transitions. [2024-10-24 04:59:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:59:38,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-24 04:59:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:59:38,985 INFO L225 Difference]: With dead ends: 2598 [2024-10-24 04:59:38,985 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 04:59:38,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:59:38,988 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:59:38,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 258 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:59:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 04:59:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 04:59:38,989 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) [2024-10-24 04:59:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 04:59:38,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-10-24 04:59:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:59:38,990 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 04:59:38,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:59:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 04:59:38,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 04:59:38,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 04:59:38,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 04:59:38,997 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:59:39,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 04:59:39,048 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 04:59:39,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:59:39 BoogieIcfgContainer [2024-10-24 04:59:39,064 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 04:59:39,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 04:59:39,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 04:59:39,065 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 04:59:39,065 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:47" (3/4) ... [2024-10-24 04:59:39,067 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 04:59:39,081 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-24 04:59:39,081 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 04:59:39,082 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 04:59:39,082 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 04:59:39,198 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 04:59:39,198 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 04:59:39,198 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 04:59:39,199 INFO L158 Benchmark]: Toolchain (without parser) took 53069.87ms. Allocated memory was 159.4MB in the beginning and 903.9MB in the end (delta: 744.5MB). Free memory was 102.0MB in the beginning and 714.5MB in the end (delta: -612.5MB). Peak memory consumption was 132.5MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,199 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 04:59:39,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.38ms. Allocated memory is still 159.4MB. Free memory was 101.5MB in the beginning and 127.7MB in the end (delta: -26.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.16ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 121.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,200 INFO L158 Benchmark]: Boogie Preprocessor took 112.40ms. Allocated memory is still 159.4MB. Free memory was 121.4MB in the beginning and 117.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,200 INFO L158 Benchmark]: RCFGBuilder took 824.89ms. Allocated memory is still 159.4MB. Free memory was 117.2MB in the beginning and 79.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,200 INFO L158 Benchmark]: TraceAbstraction took 51517.43ms. Allocated memory was 159.4MB in the beginning and 903.9MB in the end (delta: 744.5MB). Free memory was 78.6MB in the beginning and 721.8MB in the end (delta: -643.3MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,200 INFO L158 Benchmark]: Witness Printer took 134.23ms. Allocated memory is still 903.9MB. Free memory was 721.8MB in the beginning and 714.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-24 04:59:39,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.38ms. Allocated memory is still 159.4MB. Free memory was 101.5MB in the beginning and 127.7MB in the end (delta: -26.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.16ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 121.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.40ms. Allocated memory is still 159.4MB. Free memory was 121.4MB in the beginning and 117.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 824.89ms. Allocated memory is still 159.4MB. Free memory was 117.2MB in the beginning and 79.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 51517.43ms. Allocated memory was 159.4MB in the beginning and 903.9MB in the end (delta: 744.5MB). Free memory was 78.6MB in the beginning and 721.8MB in the end (delta: -643.3MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. * Witness Printer took 134.23ms. Allocated memory is still 903.9MB. Free memory was 721.8MB in the beginning and 714.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.4s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3905 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3905 mSDsluCounter, 6497 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5504 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15939 IncrementalHoareTripleChecker+Invalid, 16073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 993 mSDtfsCounter, 15939 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1494 GetRequests, 919 SyntacticMatches, 2 SemanticMatches, 573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19275 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2512occurred in iteration=18, InterpolantAutomatonStates: 433, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 1293 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 22.9s InterpolantComputationTime, 1555 NumberOfCodeBlocks, 1534 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2036 ConstructedInterpolants, 0 QuantifiedInterpolants, 17352 SizeOfPredicates, 34 NumberOfNonLiveVariables, 3721 ConjunctsInSsa, 589 ConjunctsInUnsatCore, 33 InterpolantComputations, 12 PerfectInterpolantSequences, 1257/1493 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]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_28 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2024-10-24 04:59:39,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE