./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9f62e9366253d4fa7ecb8459a59d71535ca8498509abd809bca70a443281519 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:09:26,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:09:26,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:09:26,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:09:26,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:09:26,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:09:26,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:09:26,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:09:26,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:09:26,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:09:26,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:09:26,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:09:26,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:09:26,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:09:26,905 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:09:26,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:09:26,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:09:26,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:09:26,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:09:26,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:09:26,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:09:26,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:09:26,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:09:26,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:09:26,909 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:09:26,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:09:26,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:09:26,910 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:09:26,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:09:26,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:09:26,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:09:26,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:09:26,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:26,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:09:26,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:09:26,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:09:26,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:09:26,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:09:26,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:09:26,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:09:26,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:09:26,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:09:26,914 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f62e9366253d4fa7ecb8459a59d71535ca8498509abd809bca70a443281519 [2024-11-22 02:09:27,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:09:27,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:09:27,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:09:27,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:09:27,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:09:27,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c [2024-11-22 02:09:28,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:09:28,825 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:09:28,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c [2024-11-22 02:09:28,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d379a6268/4d294df9caff4bc2bd63f9b88ba4a592/FLAG4c3518cee [2024-11-22 02:09:28,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d379a6268/4d294df9caff4bc2bd63f9b88ba4a592 [2024-11-22 02:09:28,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:09:28,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:09:28,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:28,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:09:28,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:09:28,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:28" (1/1) ... [2024-11-22 02:09:28,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e4d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:28, skipping insertion in model container [2024-11-22 02:09:28,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:09:28" (1/1) ... [2024-11-22 02:09:28,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:09:29,071 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c[951,964] [2024-11-22 02:09:29,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:29,089 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:09:29,107 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c[951,964] [2024-11-22 02:09:29,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:09:29,126 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:09:29,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29 WrapperNode [2024-11-22 02:09:29,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:09:29,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:29,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:09:29,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:09:29,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,156 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:09:29,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:09:29,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:09:29,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:09:29,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:09:29,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,179 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:09:29,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:09:29,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:09:29,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:09:29,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:09:29,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (1/1) ... [2024-11-22 02:09:29,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:09:29,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:29,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:09:29,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:09:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:09:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:09:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:09:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:09:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:09:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:09:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:09:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:09:29,340 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:09:29,342 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:09:29,491 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:09:29,491 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:09:29,505 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:09:29,506 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:09:29,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:29 BoogieIcfgContainer [2024-11-22 02:09:29,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:09:29,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:09:29,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:09:29,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:09:29,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:09:28" (1/3) ... [2024-11-22 02:09:29,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6337a86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:29, skipping insertion in model container [2024-11-22 02:09:29,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:09:29" (2/3) ... [2024-11-22 02:09:29,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6337a86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:09:29, skipping insertion in model container [2024-11-22 02:09:29,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:09:29" (3/3) ... [2024-11-22 02:09:29,516 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-2.c [2024-11-22 02:09:29,536 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:09:29,536 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:09:29,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:09:29,605 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;@43b8b9c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:09:29,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:09:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:09:29,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:29,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:29,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:29,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:09:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502961583] [2024-11-22 02:09:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:09:29,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:29,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502961583] [2024-11-22 02:09:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502961583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:29,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785191567] [2024-11-22 02:09:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:29,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:29,957 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:30,028 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-22 02:09:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:30,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:09:30,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:30,037 INFO L225 Difference]: With dead ends: 41 [2024-11-22 02:09:30,037 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:09:30,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:30,042 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:30,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:09:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:09:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:09:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:30,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:09:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:30,079 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:30,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:09:30,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:30,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:30,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:09:30,081 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:30,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:09:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836245729] [2024-11-22 02:09:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:09:30,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:30,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836245729] [2024-11-22 02:09:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836245729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:09:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:09:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:09:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143179368] [2024-11-22 02:09:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:09:30,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:09:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:09:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:30,170 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:30,237 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:09:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:09:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:09:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:30,239 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:09:30,239 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:09:30,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:09:30,241 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:30,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:09:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:09:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:09:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:09:30,249 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:09:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:30,249 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:09:30,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:09:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:09:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:09:30,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:30,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:30,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:09:30,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:30,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:09:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531309027] [2024-11-22 02:09:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:30,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:30,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531309027] [2024-11-22 02:09:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531309027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900881868] [2024-11-22 02:09:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:30,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:30,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:30,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:30,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:09:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:30,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:30,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:30,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900881868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:30,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:09:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375660566] [2024-11-22 02:09:30,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:30,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:09:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:09:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:09:30,814 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:30,965 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:09:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:09:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:30,968 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:09:30,969 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:09:30,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:30,970 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:30,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:09:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:09:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:09:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:09:30,979 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:09:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:30,979 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:09:30,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:09:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:09:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:09:30,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:30,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:30,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:09:31,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:31,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:31,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:09:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:31,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743144527] [2024-11-22 02:09:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:31,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:31,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743144527] [2024-11-22 02:09:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743144527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179035763] [2024-11-22 02:09:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:31,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:31,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:31,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:09:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:31,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:31,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:31,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:09:31,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179035763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:31,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:31,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:09:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810900548] [2024-11-22 02:09:31,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:31,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:31,640 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:31,755 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:09:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:09:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:09:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:31,757 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:09:31,757 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:09:31,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:09:31,759 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:31,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:09:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:09:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:09:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:09:31,775 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:09:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:31,776 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:09:31,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:09:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:09:31,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:09:31,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:31,778 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:31,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:31,978 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,SelfDestructingSolverStorable3 [2024-11-22 02:09:31,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:31,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:09:31,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:31,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989158082] [2024-11-22 02:09:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:31,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989158082] [2024-11-22 02:09:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989158082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488522261] [2024-11-22 02:09:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:32,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:32,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:32,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:09:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:32,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:32,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:09:32,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488522261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:32,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:32,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:09:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283685765] [2024-11-22 02:09:32,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:32,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:09:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:09:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:32,586 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:32,760 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:09:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:09:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-22 02:09:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:32,764 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:09:32,764 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:09:32,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:32,765 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:32,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:09:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:09:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:09:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:09:32,780 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:09:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:32,780 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:09:32,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:09:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:09:32,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:32,783 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:32,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:09:32,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:32,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:32,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:09:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514865686] [2024-11-22 02:09:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:09:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514865686] [2024-11-22 02:09:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514865686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624009648] [2024-11-22 02:09:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:33,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:33,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:09:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:33,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:33,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:09:33,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:09:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624009648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:33,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:33,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:09:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572021439] [2024-11-22 02:09:33,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:33,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:33,648 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:34,043 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:09:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:09:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-22 02:09:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:34,046 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:09:34,046 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:09:34,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:34,048 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:34,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:09:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:09:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:09:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-22 02:09:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:09:34,063 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:09:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:34,063 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:09:34,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:09:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:09:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:09:34,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:34,070 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-22 02:09:34,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:34,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:34,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:34,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:09:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285023242] [2024-11-22 02:09:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:34,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:09:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285023242] [2024-11-22 02:09:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285023242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059413993] [2024-11-22 02:09:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:34,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:34,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:09:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:34,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:34,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:09:34,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:09:35,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059413993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:35,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:35,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:09:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046219729] [2024-11-22 02:09:35,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:35,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:35,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:35,025 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:35,226 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:09:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:35,227 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-22 02:09:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:35,229 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:09:35,229 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:09:35,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:35,230 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:35,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:09:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:09:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-22 02:09:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:09:35,265 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:09:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:35,266 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:09:35,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:09:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:09:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:09:35,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:35,272 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:35,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:35,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:35,476 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:35,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-22 02:09:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130784841] [2024-11-22 02:09:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-22 02:09:35,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130784841] [2024-11-22 02:09:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130784841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103377741] [2024-11-22 02:09:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:09:35,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:35,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:35,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:09:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:35,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:35,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-22 02:09:35,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 02:09:36,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103377741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:36,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:36,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:09:36,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757556332] [2024-11-22 02:09:36,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:36,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:36,723 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:37,371 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:09:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:09:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2024-11-22 02:09:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:37,374 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:09:37,374 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:09:37,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:09:37,377 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:37,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:09:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:09:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:09:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-22 02:09:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:09:37,399 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-22 02:09:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:37,400 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:09:37,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:09:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:09:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:09:37,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:37,402 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:37,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:09:37,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:37,607 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:37,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-22 02:09:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272888385] [2024-11-22 02:09:37,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:37,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:37,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-22 02:09:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272888385] [2024-11-22 02:09:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272888385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625128632] [2024-11-22 02:09:37,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:37,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:09:38,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:38,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:38,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:09:38,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-22 02:09:38,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-22 02:09:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625128632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:39,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:09:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716003565] [2024-11-22 02:09:39,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:39,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:09:39,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:39,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:09:39,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:39,367 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:39,634 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:09:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:09:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2024-11-22 02:09:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:39,637 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:09:39,637 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:09:39,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:09:39,639 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:39,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 196 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:09:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:09:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-22 02:09:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:09:39,657 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-22 02:09:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:39,658 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:09:39,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:09:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:09:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:09:39,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:39,662 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:39,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:39,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:39,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:39,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:09:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742209669] [2024-11-22 02:09:39,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:39,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:39,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-22 02:09:40,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742209669] [2024-11-22 02:09:40,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742209669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741739615] [2024-11-22 02:09:40,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:40,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:40,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:09:40,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:40,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:40,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:09:40,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-22 02:09:40,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-22 02:09:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741739615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:42,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:42,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2024-11-22 02:09:42,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036636427] [2024-11-22 02:09:42,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:42,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:09:42,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:09:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:09:42,525 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:43,347 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:09:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:09:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) Word has length 284 [2024-11-22 02:09:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:43,351 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:09:43,352 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:09:43,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:09:43,355 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 158 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:43,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 449 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:09:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:09:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:09:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-22 02:09:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:09:43,380 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:09:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:43,380 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:09:43,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-22 02:09:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:09:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-22 02:09:43,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:43,386 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 25, 25, 24, 19, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:43,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:09:43,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:09:43,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:43,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1695767594, now seen corresponding path program 3 times [2024-11-22 02:09:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105847045] [2024-11-22 02:09:43,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:43,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:43,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 515 proven. 4 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2024-11-22 02:09:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105847045] [2024-11-22 02:09:43,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105847045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304587908] [2024-11-22 02:09:43,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:09:43,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:43,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:43,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:43,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:09:43,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:09:43,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:43,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:09:43,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 760 proven. 6 refuted. 0 times theorem prover too weak. 3609 trivial. 0 not checked. [2024-11-22 02:09:43,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 619 proven. 12 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2024-11-22 02:09:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304587908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:45,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:45,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 02:09:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989405570] [2024-11-22 02:09:45,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:45,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:09:45,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:09:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:09:45,050 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:09:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:45,201 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2024-11-22 02:09:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:09:45,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) Word has length 389 [2024-11-22 02:09:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:45,205 INFO L225 Difference]: With dead ends: 360 [2024-11-22 02:09:45,205 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 02:09:45,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 767 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:09:45,207 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:45,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 02:09:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-22 02:09:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2024-11-22 02:09:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2024-11-22 02:09:45,232 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 389 [2024-11-22 02:09:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:45,232 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2024-11-22 02:09:45,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:09:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2024-11-22 02:09:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-22 02:09:45,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:45,242 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:45,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:09:45,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:45,443 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:45,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2024-11-22 02:09:45,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:45,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045287631] [2024-11-22 02:09:45,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:45,516 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:45,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 196 proven. 801 refuted. 0 times theorem prover too weak. 5216 trivial. 0 not checked. [2024-11-22 02:09:45,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:45,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045287631] [2024-11-22 02:09:45,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045287631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:45,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924165073] [2024-11-22 02:09:45,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:45,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:45,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:45,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:09:46,045 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:46,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:46,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:09:46,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 1477 proven. 19 refuted. 0 times theorem prover too weak. 4717 trivial. 0 not checked. [2024-11-22 02:09:46,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 196 proven. 927 refuted. 0 times theorem prover too weak. 5090 trivial. 0 not checked. [2024-11-22 02:09:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924165073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:47,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 17 [2024-11-22 02:09:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257157507] [2024-11-22 02:09:47,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:47,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:09:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:09:47,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:09:47,779 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:09:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:47,935 INFO L93 Difference]: Finished difference Result 327 states and 532 transitions. [2024-11-22 02:09:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:09:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) Word has length 461 [2024-11-22 02:09:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:47,937 INFO L225 Difference]: With dead ends: 327 [2024-11-22 02:09:47,938 INFO L226 Difference]: Without dead ends: 139 [2024-11-22 02:09:47,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 911 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:09:47,940 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:47,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 211 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-22 02:09:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-22 02:09:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 95 states have internal predecessors, (112), 24 states have call successors, (24), 16 states have call predecessors, (24), 18 states have return successors, (67), 27 states have call predecessors, (67), 24 states have call successors, (67) [2024-11-22 02:09:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 203 transitions. [2024-11-22 02:09:47,956 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 203 transitions. Word has length 461 [2024-11-22 02:09:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:47,957 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 203 transitions. [2024-11-22 02:09:47,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:09:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 203 transitions. [2024-11-22 02:09:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-22 02:09:47,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:47,961 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 31, 31, 28, 28, 19, 19, 19, 19, 19, 19, 19, 15, 15, 15, 15, 15, 15, 15, 13, 10, 9, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:47,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 02:09:48,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 02:09:48,161 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:48,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1622557946, now seen corresponding path program 5 times [2024-11-22 02:09:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145571870] [2024-11-22 02:09:48,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:48,184 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 02:09:48,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 276 proven. 613 refuted. 0 times theorem prover too weak. 5643 trivial. 0 not checked. [2024-11-22 02:09:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145571870] [2024-11-22 02:09:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145571870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307390673] [2024-11-22 02:09:48,243 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:09:48,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:48,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:48,246 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:48,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:09:48,379 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 02:09:48,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:48,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:09:48,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 1990 proven. 4 refuted. 0 times theorem prover too weak. 4538 trivial. 0 not checked. [2024-11-22 02:09:48,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6532 backedges. 276 proven. 613 refuted. 0 times theorem prover too weak. 5643 trivial. 0 not checked. [2024-11-22 02:09:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307390673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:49,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:09:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666155689] [2024-11-22 02:09:49,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:49,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:09:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:09:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:09:49,630 INFO L87 Difference]: Start difference. First operand 139 states and 203 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:09:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:49,714 INFO L93 Difference]: Finished difference Result 262 states and 421 transitions. [2024-11-22 02:09:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:09:49,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 474 [2024-11-22 02:09:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:49,716 INFO L225 Difference]: With dead ends: 262 [2024-11-22 02:09:49,716 INFO L226 Difference]: Without dead ends: 129 [2024-11-22 02:09:49,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 942 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:09:49,718 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:49,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 124 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-22 02:09:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-22 02:09:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 88 states have internal predecessors, (104), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (61), 24 states have call predecessors, (61), 22 states have call successors, (61) [2024-11-22 02:09:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2024-11-22 02:09:49,729 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 474 [2024-11-22 02:09:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:49,729 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2024-11-22 02:09:49,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:09:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2024-11-22 02:09:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-22 02:09:49,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:49,732 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 21, 20, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:49,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:09:49,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:09:49,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:49,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 49150599, now seen corresponding path program 6 times [2024-11-22 02:09:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:49,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012123548] [2024-11-22 02:09:49,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:49,982 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:09:49,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 515 proven. 85 refuted. 0 times theorem prover too weak. 2876 trivial. 0 not checked. [2024-11-22 02:09:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012123548] [2024-11-22 02:09:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012123548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39844868] [2024-11-22 02:09:50,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:09:50,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:50,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:50,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:09:50,448 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:09:50,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:50,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:09:50,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 526 proven. 88 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2024-11-22 02:09:50,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 530 proven. 94 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2024-11-22 02:09:51,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39844868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:51,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:51,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 18 [2024-11-22 02:09:51,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127232816] [2024-11-22 02:09:51,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:51,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:09:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:09:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:09:51,768 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:51,915 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2024-11-22 02:09:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:09:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) Word has length 351 [2024-11-22 02:09:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:51,917 INFO L225 Difference]: With dead ends: 151 [2024-11-22 02:09:51,917 INFO L226 Difference]: Without dead ends: 147 [2024-11-22 02:09:51,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 692 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:09:51,918 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:51,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 189 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-22 02:09:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-22 02:09:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 93 states have internal predecessors, (109), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (71), 26 states have call predecessors, (71), 25 states have call successors, (71) [2024-11-22 02:09:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 205 transitions. [2024-11-22 02:09:51,931 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 205 transitions. Word has length 351 [2024-11-22 02:09:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:51,932 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 205 transitions. [2024-11-22 02:09:51,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 18 states have internal predecessors, (64), 12 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-22 02:09:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 205 transitions. [2024-11-22 02:09:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 02:09:51,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:51,935 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 25, 22, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 10, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:51,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 02:09:52,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:09:52,139 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:52,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1933855095, now seen corresponding path program 7 times [2024-11-22 02:09:52,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:52,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765097317] [2024-11-22 02:09:52,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:52,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 188 proven. 676 refuted. 0 times theorem prover too weak. 3815 trivial. 0 not checked. [2024-11-22 02:09:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765097317] [2024-11-22 02:09:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765097317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890305111] [2024-11-22 02:09:52,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:09:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:52,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:52,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:09:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:09:52,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:09:52,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 134 proven. 993 refuted. 0 times theorem prover too weak. 3552 trivial. 0 not checked. [2024-11-22 02:09:52,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 134 proven. 1026 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2024-11-22 02:09:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890305111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:55,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 19] total 26 [2024-11-22 02:09:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260134080] [2024-11-22 02:09:55,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:55,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:09:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:09:55,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:09:55,673 INFO L87 Difference]: Start difference. First operand 137 states and 205 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:09:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:55,993 INFO L93 Difference]: Finished difference Result 189 states and 340 transitions. [2024-11-22 02:09:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:09:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) Word has length 405 [2024-11-22 02:09:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:55,999 INFO L225 Difference]: With dead ends: 189 [2024-11-22 02:09:55,999 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 02:09:56,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 791 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 02:09:56,001 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:56,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 262 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:09:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 02:09:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2024-11-22 02:09:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 115 states have internal predecessors, (131), 33 states have call successors, (33), 17 states have call predecessors, (33), 23 states have return successors, (139), 41 states have call predecessors, (139), 33 states have call successors, (139) [2024-11-22 02:09:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 303 transitions. [2024-11-22 02:09:56,046 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 303 transitions. Word has length 405 [2024-11-22 02:09:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:56,046 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 303 transitions. [2024-11-22 02:09:56,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 26 states have internal predecessors, (87), 22 states have call successors, (26), 1 states have call predecessors, (26), 13 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:09:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 303 transitions. [2024-11-22 02:09:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-22 02:09:56,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:56,059 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 53, 51, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 21, 19, 13, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:56,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:09:56,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:09:56,260 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:56,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1877727516, now seen corresponding path program 8 times [2024-11-22 02:09:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078783556] [2024-11-22 02:09:56,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:56,432 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:56,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 520 proven. 2314 refuted. 0 times theorem prover too weak. 20171 trivial. 0 not checked. [2024-11-22 02:09:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:57,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078783556] [2024-11-22 02:09:57,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078783556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748109308] [2024-11-22 02:09:57,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:09:57,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:57,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:57,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:57,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:09:57,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:09:57,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:57,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:09:57,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 374 proven. 2638 refuted. 0 times theorem prover too weak. 19993 trivial. 0 not checked. [2024-11-22 02:09:57,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 374 proven. 2682 refuted. 0 times theorem prover too weak. 19949 trivial. 0 not checked. [2024-11-22 02:10:02,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748109308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:02,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:02,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 35 [2024-11-22 02:10:02,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431465508] [2024-11-22 02:10:02,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:02,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:10:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:10:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:10:02,112 INFO L87 Difference]: Start difference. First operand 174 states and 303 transitions. Second operand has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2024-11-22 02:10:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:03,369 INFO L93 Difference]: Finished difference Result 447 states and 966 transitions. [2024-11-22 02:10:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 02:10:03,370 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) Word has length 882 [2024-11-22 02:10:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:03,373 INFO L225 Difference]: With dead ends: 447 [2024-11-22 02:10:03,373 INFO L226 Difference]: Without dead ends: 246 [2024-11-22 02:10:03,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1818 GetRequests, 1737 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=799, Invalid=4603, Unknown=0, NotChecked=0, Total=5402 [2024-11-22 02:10:03,377 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 176 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:03,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 620 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 02:10:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-22 02:10:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 210. [2024-11-22 02:10:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 142 states have internal predecessors, (164), 40 states have call successors, (40), 26 states have call predecessors, (40), 24 states have return successors, (164), 41 states have call predecessors, (164), 40 states have call successors, (164) [2024-11-22 02:10:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 368 transitions. [2024-11-22 02:10:03,402 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 368 transitions. Word has length 882 [2024-11-22 02:10:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:03,403 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 368 transitions. [2024-11-22 02:10:03,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 35 states have internal predecessors, (113), 29 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2024-11-22 02:10:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 368 transitions. [2024-11-22 02:10:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2024-11-22 02:10:03,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:03,414 INFO L215 NwaCegarLoop]: trace histogram [91, 91, 88, 88, 74, 70, 45, 45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 30, 25, 18, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:03,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:10:03,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:03,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash -75637175, now seen corresponding path program 9 times [2024-11-22 02:10:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:03,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734280695] [2024-11-22 02:10:03,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:03,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:03,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 2999 proven. 72 refuted. 0 times theorem prover too weak. 41481 trivial. 0 not checked. [2024-11-22 02:10:03,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:03,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734280695] [2024-11-22 02:10:03,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734280695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:03,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169047336] [2024-11-22 02:10:03,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:03,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:03,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:03,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:03,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:10:04,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:04,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:04,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:04,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 3312 proven. 85 refuted. 0 times theorem prover too weak. 41155 trivial. 0 not checked. [2024-11-22 02:10:04,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 3312 proven. 90 refuted. 0 times theorem prover too weak. 41150 trivial. 0 not checked. [2024-11-22 02:10:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169047336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:07,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:07,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 26 [2024-11-22 02:10:07,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907416778] [2024-11-22 02:10:07,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:07,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:10:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:10:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:10:07,805 INFO L87 Difference]: Start difference. First operand 210 states and 368 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-22 02:10:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,248 INFO L93 Difference]: Finished difference Result 493 states and 1059 transitions. [2024-11-22 02:10:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 02:10:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) Word has length 1222 [2024-11-22 02:10:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:08,254 INFO L225 Difference]: With dead ends: 493 [2024-11-22 02:10:08,254 INFO L226 Difference]: Without dead ends: 289 [2024-11-22 02:10:08,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2468 GetRequests, 2425 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:10:08,258 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 42 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:08,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 491 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-22 02:10:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 244. [2024-11-22 02:10:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 167 states have (on average 1.0658682634730539) internal successors, (178), 164 states have internal predecessors, (178), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 states have return successors, (200), 50 states have call predecessors, (200), 47 states have call successors, (200) [2024-11-22 02:10:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 425 transitions. [2024-11-22 02:10:08,284 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 425 transitions. Word has length 1222 [2024-11-22 02:10:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:08,285 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 425 transitions. [2024-11-22 02:10:08,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 12 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-22 02:10:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 425 transitions. [2024-11-22 02:10:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2024-11-22 02:10:08,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:08,296 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 80, 75, 75, 68, 50, 50, 50, 50, 50, 50, 50, 43, 37, 37, 37, 37, 37, 37, 37, 20, 18, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:08,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:08,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 02:10:08,498 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:08,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1822470201, now seen corresponding path program 10 times [2024-11-22 02:10:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769247982] [2024-11-22 02:10:08,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:08,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:08,670 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:08,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 43902 backedges. 741 proven. 3967 refuted. 0 times theorem prover too weak. 39194 trivial. 0 not checked. [2024-11-22 02:10:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769247982] [2024-11-22 02:10:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769247982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042238400] [2024-11-22 02:10:09,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:09,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:09,711 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:09,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:10:10,184 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:10,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:10,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:10,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 43902 backedges. 10813 proven. 226 refuted. 0 times theorem prover too weak. 32863 trivial. 0 not checked. [2024-11-22 02:10:10,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 43902 backedges. 738 proven. 4331 refuted. 0 times theorem prover too weak. 38833 trivial. 0 not checked. [2024-11-22 02:10:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042238400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:14,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 26 [2024-11-22 02:10:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050196005] [2024-11-22 02:10:14,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:14,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:10:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:14,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:10:14,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:10:14,626 INFO L87 Difference]: Start difference. First operand 244 states and 425 transitions. Second operand has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 20 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (35), 10 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-22 02:10:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:15,078 INFO L93 Difference]: Finished difference Result 444 states and 862 transitions. [2024-11-22 02:10:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 02:10:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 20 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (35), 10 states have call predecessors, (35), 20 states have call successors, (35) Word has length 1202 [2024-11-22 02:10:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:15,081 INFO L225 Difference]: With dead ends: 444 [2024-11-22 02:10:15,082 INFO L226 Difference]: Without dead ends: 211 [2024-11-22 02:10:15,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2438 GetRequests, 2388 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 02:10:15,085 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:15,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 366 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-22 02:10:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2024-11-22 02:10:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 146 states have (on average 1.0684931506849316) internal successors, (156), 142 states have internal predecessors, (156), 40 states have call successors, (40), 30 states have call predecessors, (40), 21 states have return successors, (111), 35 states have call predecessors, (111), 40 states have call successors, (111) [2024-11-22 02:10:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 307 transitions. [2024-11-22 02:10:15,103 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 307 transitions. Word has length 1202 [2024-11-22 02:10:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:15,104 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 307 transitions. [2024-11-22 02:10:15,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 20 states have call successors, (30), 2 states have call predecessors, (30), 10 states have return successors, (35), 10 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-22 02:10:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 307 transitions. [2024-11-22 02:10:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2024-11-22 02:10:15,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:15,115 INFO L215 NwaCegarLoop]: trace histogram [91, 91, 88, 88, 74, 70, 45, 45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 30, 25, 18, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:15,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:15,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:10:15,315 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:15,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash -412905715, now seen corresponding path program 11 times [2024-11-22 02:10:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912738483] [2024-11-22 02:10:15,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:15,368 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-22 02:10:15,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 1368 proven. 3039 refuted. 0 times theorem prover too weak. 40145 trivial. 0 not checked. [2024-11-22 02:10:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912738483] [2024-11-22 02:10:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912738483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22051821] [2024-11-22 02:10:15,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:15,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:15,719 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:15,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:10:16,049 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-22 02:10:16,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:16,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:16,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 20099 proven. 170 refuted. 0 times theorem prover too weak. 24283 trivial. 0 not checked. [2024-11-22 02:10:16,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 44552 backedges. 1440 proven. 3286 refuted. 0 times theorem prover too weak. 39826 trivial. 0 not checked. [2024-11-22 02:10:20,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22051821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:20,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:20,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 27 [2024-11-22 02:10:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278415829] [2024-11-22 02:10:20,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:20,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:10:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:20,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:10:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:20,215 INFO L87 Difference]: Start difference. First operand 208 states and 307 transitions. Second operand has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (37), 10 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-22 02:10:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:20,776 INFO L93 Difference]: Finished difference Result 417 states and 669 transitions. [2024-11-22 02:10:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 02:10:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (37), 10 states have call predecessors, (37), 21 states have call successors, (37) Word has length 1222 [2024-11-22 02:10:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:20,780 INFO L225 Difference]: With dead ends: 417 [2024-11-22 02:10:20,780 INFO L226 Difference]: Without dead ends: 220 [2024-11-22 02:10:20,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2481 GetRequests, 2427 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=371, Invalid=1791, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 02:10:20,782 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:20,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 344 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-22 02:10:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 203. [2024-11-22 02:10:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 144 states have (on average 1.0694444444444444) internal successors, (154), 139 states have internal predecessors, (154), 39 states have call successors, (39), 31 states have call predecessors, (39), 19 states have return successors, (98), 32 states have call predecessors, (98), 39 states have call successors, (98) [2024-11-22 02:10:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2024-11-22 02:10:20,800 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 1222 [2024-11-22 02:10:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:20,801 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2024-11-22 02:10:20,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 21 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (37), 10 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-22 02:10:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2024-11-22 02:10:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2024-11-22 02:10:20,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:20,810 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 80, 80, 66, 64, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 26, 24, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:20,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 02:10:21,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:21,011 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:21,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash -949513042, now seen corresponding path program 12 times [2024-11-22 02:10:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:21,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230884457] [2024-11-22 02:10:21,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:21,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:21,109 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:21,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 36001 backedges. 780 proven. 2621 refuted. 0 times theorem prover too weak. 32600 trivial. 0 not checked. [2024-11-22 02:10:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230884457] [2024-11-22 02:10:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230884457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176822541] [2024-11-22 02:10:21,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:21,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:21,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:21,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 02:10:22,020 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:22,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:22,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:22,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36001 backedges. 774 proven. 2621 refuted. 0 times theorem prover too weak. 32606 trivial. 0 not checked. [2024-11-22 02:10:22,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 36001 backedges. 776 proven. 2652 refuted. 0 times theorem prover too weak. 32573 trivial. 0 not checked. [2024-11-22 02:10:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176822541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:26,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 23 [2024-11-22 02:10:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43991776] [2024-11-22 02:10:26,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:26,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:26,150 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 23 states, 21 states have (on average 3.761904761904762) internal successors, (79), 23 states have internal predecessors, (79), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-22 02:10:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:26,397 INFO L93 Difference]: Finished difference Result 246 states and 391 transitions. [2024-11-22 02:10:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:10:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.761904761904762) internal successors, (79), 23 states have internal predecessors, (79), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) Word has length 1100 [2024-11-22 02:10:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:26,402 INFO L225 Difference]: With dead ends: 246 [2024-11-22 02:10:26,402 INFO L226 Difference]: Without dead ends: 242 [2024-11-22 02:10:26,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2224 GetRequests, 2188 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-11-22 02:10:26,403 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 85 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:26,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 224 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-22 02:10:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2024-11-22 02:10:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 159 states have (on average 1.0628930817610063) internal successors, (169), 154 states have internal predecessors, (169), 44 states have call successors, (44), 32 states have call predecessors, (44), 23 states have return successors, (140), 40 states have call predecessors, (140), 44 states have call successors, (140) [2024-11-22 02:10:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 353 transitions. [2024-11-22 02:10:26,424 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 353 transitions. Word has length 1100 [2024-11-22 02:10:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:26,424 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 353 transitions. [2024-11-22 02:10:26,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.761904761904762) internal successors, (79), 23 states have internal predecessors, (79), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-22 02:10:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 353 transitions. [2024-11-22 02:10:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2024-11-22 02:10:26,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:26,433 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 78, 78, 64, 63, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 25, 24, 16, 14, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:26,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:26,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:26,634 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:26,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 779255892, now seen corresponding path program 13 times [2024-11-22 02:10:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232011913] [2024-11-22 02:10:26,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 34233 backedges. 1046 proven. 2261 refuted. 0 times theorem prover too weak. 30926 trivial. 0 not checked. [2024-11-22 02:10:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232011913] [2024-11-22 02:10:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232011913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125332688] [2024-11-22 02:10:27,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:27,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:27,884 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 02:10:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:28,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:10:28,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 34233 backedges. 549 proven. 3569 refuted. 0 times theorem prover too weak. 30115 trivial. 0 not checked. [2024-11-22 02:10:28,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 34233 backedges. 549 proven. 3625 refuted. 0 times theorem prover too weak. 30059 trivial. 0 not checked. [2024-11-22 02:10:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125332688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:33,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 23] total 29 [2024-11-22 02:10:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232637132] [2024-11-22 02:10:33,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:33,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:10:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:33,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:10:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:10:33,903 INFO L87 Difference]: Start difference. First operand 227 states and 353 transitions. Second operand has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-22 02:10:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:34,285 INFO L93 Difference]: Finished difference Result 295 states and 578 transitions. [2024-11-22 02:10:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:10:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) Word has length 1073 [2024-11-22 02:10:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:34,291 INFO L225 Difference]: With dead ends: 295 [2024-11-22 02:10:34,291 INFO L226 Difference]: Without dead ends: 291 [2024-11-22 02:10:34,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2175 GetRequests, 2126 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 02:10:34,293 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 99 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:34,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 268 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-22 02:10:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 257. [2024-11-22 02:10:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 177 states have (on average 1.0564971751412429) internal successors, (187), 172 states have internal predecessors, (187), 50 states have call successors, (50), 32 states have call predecessors, (50), 29 states have return successors, (212), 52 states have call predecessors, (212), 50 states have call successors, (212) [2024-11-22 02:10:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 449 transitions. [2024-11-22 02:10:34,323 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 449 transitions. Word has length 1073 [2024-11-22 02:10:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:34,323 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 449 transitions. [2024-11-22 02:10:34,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 25 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-22 02:10:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 449 transitions. [2024-11-22 02:10:34,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1891 [2024-11-22 02:10:34,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:34,346 INFO L215 NwaCegarLoop]: trace histogram [140, 140, 137, 137, 113, 111, 70, 70, 70, 70, 70, 70, 70, 68, 68, 68, 68, 68, 68, 68, 43, 43, 29, 24, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:34,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-22 02:10:34,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:34,547 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:34,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash -650265394, now seen corresponding path program 14 times [2024-11-22 02:10:34,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:34,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272035411] [2024-11-22 02:10:34,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:34,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:35,015 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:35,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 107389 backedges. 1412 proven. 5316 refuted. 0 times theorem prover too weak. 100661 trivial. 0 not checked. [2024-11-22 02:10:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272035411] [2024-11-22 02:10:37,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272035411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424004907] [2024-11-22 02:10:37,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:37,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:37,120 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:37,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 02:10:37,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:37,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:37,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 4215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:10:37,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 107389 backedges. 910 proven. 7315 refuted. 0 times theorem prover too weak. 99164 trivial. 0 not checked. [2024-11-22 02:10:38,121 INFO L311 TraceCheckSpWp]: Computing backward predicates...