./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-60.i --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/hardness-nfm22/hardness_operatoramount_amount500_file-60.i -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 b17bfee826ea574d9167da2b4a5bf955c821c1f041af44a4ed8a7abf38eb1376 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:03:29,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:03:29,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:03:29,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:03:29,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:03:29,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:03:29,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:03:29,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:03:29,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:03:29,215 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:03:29,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:03:29,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:03:29,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:03:29,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:03:29,219 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:03:29,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:03:29,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:03:29,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:03:29,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:03:29,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:03:29,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:03:29,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:03:29,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:03:29,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:03:29,224 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:03:29,224 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:03:29,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:03:29,225 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:03:29,225 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:03:29,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:03:29,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:03:29,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:03:29,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:03:29,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:03:29,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:03:29,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:03:29,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:03:29,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:03:29,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:03:29,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:03:29,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:03:29,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:03:29,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b17bfee826ea574d9167da2b4a5bf955c821c1f041af44a4ed8a7abf38eb1376 [2024-11-22 12:03:29,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:03:29,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:03:29,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:03:29,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:03:29,442 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:03:29,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-60.i [2024-11-22 12:03:30,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:03:31,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:03:31,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-60.i [2024-11-22 12:03:31,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c888d6d6b/0edb9e07183b453eb8adfb044efa46d2/FLAG27c6a438e [2024-11-22 12:03:31,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c888d6d6b/0edb9e07183b453eb8adfb044efa46d2 [2024-11-22 12:03:31,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:03:31,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:03:31,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:03:31,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:03:31,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:03:31,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e14a547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31, skipping insertion in model container [2024-11-22 12:03:31,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,170 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:03:31,308 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/hardness-nfm22/hardness_operatoramount_amount500_file-60.i[916,929] [2024-11-22 12:03:31,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:03:31,552 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:03:31,562 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/hardness-nfm22/hardness_operatoramount_amount500_file-60.i[916,929] [2024-11-22 12:03:31,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:03:31,723 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:03:31,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31 WrapperNode [2024-11-22 12:03:31,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:03:31,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:03:31,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:03:31,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:03:31,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,827 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 815 [2024-11-22 12:03:31,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:03:31,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:03:31,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:03:31,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:03:31,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,912 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 12:03:31,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:03:31,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:03:31,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:03:31,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:03:31,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (1/1) ... [2024-11-22 12:03:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:03:32,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:32,030 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 12:03:32,033 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 12:03:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:03:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:03:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:03:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:03:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:03:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:03:32,262 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:03:32,264 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:03:33,238 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-22 12:03:33,238 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:03:33,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:03:33,264 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:03:33,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:03:33 BoogieIcfgContainer [2024-11-22 12:03:33,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:03:33,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:03:33,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:03:33,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:03:33,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:03:31" (1/3) ... [2024-11-22 12:03:33,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c13c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:03:33, skipping insertion in model container [2024-11-22 12:03:33,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:03:31" (2/3) ... [2024-11-22 12:03:33,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c13c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:03:33, skipping insertion in model container [2024-11-22 12:03:33,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:03:33" (3/3) ... [2024-11-22 12:03:33,273 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-60.i [2024-11-22 12:03:33,286 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:03:33,287 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:03:33,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:03:33,368 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;@633596a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:03:33,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:03:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 258 states have (on average 1.565891472868217) internal successors, (404), 259 states have internal predecessors, (404), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-22 12:03:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-22 12:03:33,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:33,398 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:33,399 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:33,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 142976052, now seen corresponding path program 1 times [2024-11-22 12:03:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:33,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14528255] [2024-11-22 12:03:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-22 12:03:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14528255] [2024-11-22 12:03:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14528255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:03:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107681546] [2024-11-22 12:03:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:33,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:03:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:03:33,935 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 12:03:33,940 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 12:03:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:34,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:03:34,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:03:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-22 12:03:34,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:03:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107681546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:34,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:03:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:03:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223733552] [2024-11-22 12:03:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:34,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:03:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:03:34,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:03:34,352 INFO L87 Difference]: Start difference. First operand has 328 states, 258 states have (on average 1.565891472868217) internal successors, (404), 259 states have internal predecessors, (404), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-22 12:03:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:34,422 INFO L93 Difference]: Finished difference Result 649 states and 1137 transitions. [2024-11-22 12:03:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:03:34,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 489 [2024-11-22 12:03:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:34,436 INFO L225 Difference]: With dead ends: 649 [2024-11-22 12:03:34,437 INFO L226 Difference]: Without dead ends: 324 [2024-11-22 12:03:34,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:03:34,447 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:34,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-22 12:03:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-22 12:03:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 255 states have (on average 1.5490196078431373) internal successors, (395), 255 states have internal predecessors, (395), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-22 12:03:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 529 transitions. [2024-11-22 12:03:34,519 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 529 transitions. Word has length 489 [2024-11-22 12:03:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:34,521 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 529 transitions. [2024-11-22 12:03:34,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-22 12:03:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 529 transitions. [2024-11-22 12:03:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:34,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:34,531 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:34,549 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 12:03:34,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 12:03:34,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:34,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1863349437, now seen corresponding path program 1 times [2024-11-22 12:03:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802643577] [2024-11-22 12:03:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802643577] [2024-11-22 12:03:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802643577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247608432] [2024-11-22 12:03:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:35,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:35,172 INFO L87 Difference]: Start difference. First operand 324 states and 529 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:35,372 INFO L93 Difference]: Finished difference Result 883 states and 1441 transitions. [2024-11-22 12:03:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:35,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:35,378 INFO L225 Difference]: With dead ends: 883 [2024-11-22 12:03:35,379 INFO L226 Difference]: Without dead ends: 562 [2024-11-22 12:03:35,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:35,381 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 378 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:35,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1079 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:03:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-22 12:03:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 559. [2024-11-22 12:03:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 466 states have (on average 1.5622317596566524) internal successors, (728), 467 states have internal predecessors, (728), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 12:03:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 908 transitions. [2024-11-22 12:03:35,425 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 908 transitions. Word has length 490 [2024-11-22 12:03:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:35,427 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 908 transitions. [2024-11-22 12:03:35,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 908 transitions. [2024-11-22 12:03:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:35,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:35,434 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:35,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:03:35,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:35,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -556207039, now seen corresponding path program 1 times [2024-11-22 12:03:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660530247] [2024-11-22 12:03:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:35,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660530247] [2024-11-22 12:03:35,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660530247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:35,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:35,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:35,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746688317] [2024-11-22 12:03:35,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:35,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:35,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:35,781 INFO L87 Difference]: Start difference. First operand 559 states and 908 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:35,846 INFO L93 Difference]: Finished difference Result 1659 states and 2696 transitions. [2024-11-22 12:03:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:35,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:35,857 INFO L225 Difference]: With dead ends: 1659 [2024-11-22 12:03:35,857 INFO L226 Difference]: Without dead ends: 1103 [2024-11-22 12:03:35,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:35,861 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 514 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:35,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1040 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2024-11-22 12:03:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 561. [2024-11-22 12:03:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 468 states have (on average 1.5598290598290598) internal successors, (730), 469 states have internal predecessors, (730), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 12:03:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 910 transitions. [2024-11-22 12:03:35,903 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 910 transitions. Word has length 490 [2024-11-22 12:03:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:35,906 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 910 transitions. [2024-11-22 12:03:35,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 910 transitions. [2024-11-22 12:03:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:35,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:35,913 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:35,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:03:35,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:35,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash 282826623, now seen corresponding path program 1 times [2024-11-22 12:03:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:35,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901155790] [2024-11-22 12:03:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901155790] [2024-11-22 12:03:36,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901155790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:36,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:36,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:36,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887766527] [2024-11-22 12:03:36,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:36,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:36,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:36,553 INFO L87 Difference]: Start difference. First operand 561 states and 910 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:36,642 INFO L93 Difference]: Finished difference Result 1123 states and 1823 transitions. [2024-11-22 12:03:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:03:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:36,646 INFO L225 Difference]: With dead ends: 1123 [2024-11-22 12:03:36,646 INFO L226 Difference]: Without dead ends: 565 [2024-11-22 12:03:36,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:36,651 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 0 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:36,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:03:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-22 12:03:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-22 12:03:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 472 states have (on average 1.555084745762712) internal successors, (734), 473 states have internal predecessors, (734), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 12:03:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 914 transitions. [2024-11-22 12:03:36,673 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 914 transitions. Word has length 490 [2024-11-22 12:03:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:36,673 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 914 transitions. [2024-11-22 12:03:36,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 914 transitions. [2024-11-22 12:03:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:36,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:36,678 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:36,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:03:36,679 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:36,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash -134569983, now seen corresponding path program 1 times [2024-11-22 12:03:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610699238] [2024-11-22 12:03:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:37,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:37,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610699238] [2024-11-22 12:03:37,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610699238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:37,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:37,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:03:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174046223] [2024-11-22 12:03:37,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:37,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:03:37,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:37,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:03:37,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:03:37,232 INFO L87 Difference]: Start difference. First operand 565 states and 914 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:37,931 INFO L93 Difference]: Finished difference Result 3062 states and 4956 transitions. [2024-11-22 12:03:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 12:03:37,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:37,940 INFO L225 Difference]: With dead ends: 3062 [2024-11-22 12:03:37,940 INFO L226 Difference]: Without dead ends: 2500 [2024-11-22 12:03:37,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-22 12:03:37,942 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 1819 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:37,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3392 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:03:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2024-11-22 12:03:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2082. [2024-11-22 12:03:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1817 states have (on average 1.5718216840946615) internal successors, (2856), 1823 states have internal predecessors, (2856), 256 states have call successors, (256), 8 states have call predecessors, (256), 8 states have return successors, (256), 250 states have call predecessors, (256), 256 states have call successors, (256) [2024-11-22 12:03:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3368 transitions. [2024-11-22 12:03:38,012 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3368 transitions. Word has length 490 [2024-11-22 12:03:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:38,013 INFO L471 AbstractCegarLoop]: Abstraction has 2082 states and 3368 transitions. [2024-11-22 12:03:38,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3368 transitions. [2024-11-22 12:03:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:38,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:38,020 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:38,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:03:38,020 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:38,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1191301185, now seen corresponding path program 1 times [2024-11-22 12:03:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377570745] [2024-11-22 12:03:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377570745] [2024-11-22 12:03:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377570745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:39,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:39,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873547476] [2024-11-22 12:03:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:39,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:39,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:39,032 INFO L87 Difference]: Start difference. First operand 2082 states and 3368 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:39,532 INFO L93 Difference]: Finished difference Result 4701 states and 7559 transitions. [2024-11-22 12:03:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:03:39,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:39,544 INFO L225 Difference]: With dead ends: 4701 [2024-11-22 12:03:39,544 INFO L226 Difference]: Without dead ends: 2622 [2024-11-22 12:03:39,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:39,550 INFO L432 NwaCegarLoop]: 574 mSDtfsCounter, 809 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:39,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1705 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:03:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2024-11-22 12:03:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2078. [2024-11-22 12:03:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1813 states have (on average 1.5686707115278544) internal successors, (2844), 1819 states have internal predecessors, (2844), 256 states have call successors, (256), 8 states have call predecessors, (256), 8 states have return successors, (256), 250 states have call predecessors, (256), 256 states have call successors, (256) [2024-11-22 12:03:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3356 transitions. [2024-11-22 12:03:39,665 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3356 transitions. Word has length 490 [2024-11-22 12:03:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:39,666 INFO L471 AbstractCegarLoop]: Abstraction has 2078 states and 3356 transitions. [2024-11-22 12:03:39,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3356 transitions. [2024-11-22 12:03:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:39,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:39,674 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:39,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:03:39,674 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:39,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2024392703, now seen corresponding path program 1 times [2024-11-22 12:03:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:39,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414510967] [2024-11-22 12:03:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:40,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:40,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414510967] [2024-11-22 12:03:40,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414510967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:40,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:40,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:40,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892083241] [2024-11-22 12:03:40,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:40,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:40,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:40,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:40,489 INFO L87 Difference]: Start difference. First operand 2078 states and 3356 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:40,538 INFO L93 Difference]: Finished difference Result 4157 states and 6717 transitions. [2024-11-22 12:03:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:40,547 INFO L225 Difference]: With dead ends: 4157 [2024-11-22 12:03:40,547 INFO L226 Difference]: Without dead ends: 2082 [2024-11-22 12:03:40,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:40,551 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 0 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:40,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1050 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2024-11-22 12:03:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2024-11-22 12:03:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1817 states have (on average 1.5674188222344525) internal successors, (2848), 1823 states have internal predecessors, (2848), 256 states have call successors, (256), 8 states have call predecessors, (256), 8 states have return successors, (256), 250 states have call predecessors, (256), 256 states have call successors, (256) [2024-11-22 12:03:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3360 transitions. [2024-11-22 12:03:40,626 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3360 transitions. Word has length 490 [2024-11-22 12:03:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:40,627 INFO L471 AbstractCegarLoop]: Abstraction has 2082 states and 3360 transitions. [2024-11-22 12:03:40,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3360 transitions. [2024-11-22 12:03:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:40,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:40,631 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:40,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:03:40,632 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:40,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2106544319, now seen corresponding path program 1 times [2024-11-22 12:03:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010974246] [2024-11-22 12:03:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010974246] [2024-11-22 12:03:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010974246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:40,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:40,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622361093] [2024-11-22 12:03:40,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:40,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:40,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:40,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:40,802 INFO L87 Difference]: Start difference. First operand 2082 states and 3360 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:40,892 INFO L93 Difference]: Finished difference Result 4229 states and 6820 transitions. [2024-11-22 12:03:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:40,901 INFO L225 Difference]: With dead ends: 4229 [2024-11-22 12:03:40,901 INFO L226 Difference]: Without dead ends: 2150 [2024-11-22 12:03:40,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:40,905 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 364 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:40,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1010 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2024-11-22 12:03:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1606. [2024-11-22 12:03:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1427 states have (on average 1.5893482831114225) internal successors, (2268), 1429 states have internal predecessors, (2268), 172 states have call successors, (172), 6 states have call predecessors, (172), 6 states have return successors, (172), 170 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-22 12:03:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2612 transitions. [2024-11-22 12:03:40,968 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2612 transitions. Word has length 490 [2024-11-22 12:03:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:40,968 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2612 transitions. [2024-11-22 12:03:40,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2612 transitions. [2024-11-22 12:03:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:40,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:40,972 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:40,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:03:40,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:40,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash -997513603, now seen corresponding path program 1 times [2024-11-22 12:03:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:40,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988227754] [2024-11-22 12:03:40,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:40,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988227754] [2024-11-22 12:03:41,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988227754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:41,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643530972] [2024-11-22 12:03:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:41,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:41,653 INFO L87 Difference]: Start difference. First operand 1606 states and 2612 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:41,902 INFO L93 Difference]: Finished difference Result 5021 states and 8175 transitions. [2024-11-22 12:03:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:03:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:41,913 INFO L225 Difference]: With dead ends: 5021 [2024-11-22 12:03:41,913 INFO L226 Difference]: Without dead ends: 3418 [2024-11-22 12:03:41,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:41,915 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 530 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:41,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1439 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:03:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2024-11-22 12:03:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 2786. [2024-11-22 12:03:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2583 states have (on average 1.6167247386759582) internal successors, (4176), 2589 states have internal predecessors, (4176), 192 states have call successors, (192), 10 states have call predecessors, (192), 10 states have return successors, (192), 186 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-22 12:03:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4560 transitions. [2024-11-22 12:03:41,986 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4560 transitions. Word has length 490 [2024-11-22 12:03:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:41,986 INFO L471 AbstractCegarLoop]: Abstraction has 2786 states and 4560 transitions. [2024-11-22 12:03:41,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4560 transitions. [2024-11-22 12:03:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:41,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:41,992 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:41,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 12:03:41,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:41,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash 540826427, now seen corresponding path program 1 times [2024-11-22 12:03:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184167381] [2024-11-22 12:03:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184167381] [2024-11-22 12:03:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184167381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750636422] [2024-11-22 12:03:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:42,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:42,498 INFO L87 Difference]: Start difference. First operand 2786 states and 4560 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:42,660 INFO L93 Difference]: Finished difference Result 7728 states and 12610 transitions. [2024-11-22 12:03:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:42,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:42,680 INFO L225 Difference]: With dead ends: 7728 [2024-11-22 12:03:42,681 INFO L226 Difference]: Without dead ends: 4945 [2024-11-22 12:03:42,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:42,688 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 379 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:42,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1044 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2024-11-22 12:03:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4863. [2024-11-22 12:03:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4458 states have (on average 1.6002691790040378) internal successors, (7134), 4470 states have internal predecessors, (7134), 384 states have call successors, (384), 20 states have call predecessors, (384), 20 states have return successors, (384), 372 states have call predecessors, (384), 384 states have call successors, (384) [2024-11-22 12:03:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 7902 transitions. [2024-11-22 12:03:42,936 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 7902 transitions. Word has length 490 [2024-11-22 12:03:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:42,937 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 7902 transitions. [2024-11-22 12:03:42,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 7902 transitions. [2024-11-22 12:03:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:42,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:42,954 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:42,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 12:03:42,955 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:42,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1509444869, now seen corresponding path program 1 times [2024-11-22 12:03:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:42,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396676412] [2024-11-22 12:03:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:42,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:44,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396676412] [2024-11-22 12:03:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396676412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:44,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:03:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308905822] [2024-11-22 12:03:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:44,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:03:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:03:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:44,303 INFO L87 Difference]: Start difference. First operand 4863 states and 7902 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:44,838 INFO L93 Difference]: Finished difference Result 18089 states and 29236 transitions. [2024-11-22 12:03:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:03:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:44,872 INFO L225 Difference]: With dead ends: 18089 [2024-11-22 12:03:44,872 INFO L226 Difference]: Without dead ends: 13229 [2024-11-22 12:03:44,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:44,881 INFO L432 NwaCegarLoop]: 722 mSDtfsCounter, 676 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:44,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2362 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:03:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2024-11-22 12:03:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 5979. [2024-11-22 12:03:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5979 states, 5574 states have (on average 1.6092572658772875) internal successors, (8970), 5586 states have internal predecessors, (8970), 384 states have call successors, (384), 20 states have call predecessors, (384), 20 states have return successors, (384), 372 states have call predecessors, (384), 384 states have call successors, (384) [2024-11-22 12:03:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 9738 transitions. [2024-11-22 12:03:45,083 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 9738 transitions. Word has length 490 [2024-11-22 12:03:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:45,083 INFO L471 AbstractCegarLoop]: Abstraction has 5979 states and 9738 transitions. [2024-11-22 12:03:45,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 9738 transitions. [2024-11-22 12:03:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:45,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:45,091 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:45,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 12:03:45,092 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:45,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1191394561, now seen corresponding path program 1 times [2024-11-22 12:03:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574113258] [2024-11-22 12:03:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:45,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:45,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574113258] [2024-11-22 12:03:45,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574113258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:45,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:03:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270749883] [2024-11-22 12:03:45,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:45,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:03:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:03:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:45,974 INFO L87 Difference]: Start difference. First operand 5979 states and 9738 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:46,606 INFO L93 Difference]: Finished difference Result 15927 states and 25920 transitions. [2024-11-22 12:03:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:03:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:46,627 INFO L225 Difference]: With dead ends: 15927 [2024-11-22 12:03:46,627 INFO L226 Difference]: Without dead ends: 9951 [2024-11-22 12:03:46,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:03:46,640 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 441 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:46,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1924 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:03:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2024-11-22 12:03:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 6177. [2024-11-22 12:03:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6177 states, 5702 states have (on average 1.6032970887407927) internal successors, (9142), 5714 states have internal predecessors, (9142), 451 states have call successors, (451), 23 states have call predecessors, (451), 23 states have return successors, (451), 439 states have call predecessors, (451), 451 states have call successors, (451) [2024-11-22 12:03:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 10044 transitions. [2024-11-22 12:03:46,842 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 10044 transitions. Word has length 490 [2024-11-22 12:03:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:46,843 INFO L471 AbstractCegarLoop]: Abstraction has 6177 states and 10044 transitions. [2024-11-22 12:03:46,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 10044 transitions. [2024-11-22 12:03:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:46,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:46,849 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:46,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 12:03:46,850 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:46,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1628077579, now seen corresponding path program 1 times [2024-11-22 12:03:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:46,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333076741] [2024-11-22 12:03:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:46,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333076741] [2024-11-22 12:03:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333076741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:47,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538778699] [2024-11-22 12:03:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:47,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:47,962 INFO L87 Difference]: Start difference. First operand 6177 states and 10044 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:48,399 INFO L93 Difference]: Finished difference Result 22944 states and 37400 transitions. [2024-11-22 12:03:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:03:48,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:48,431 INFO L225 Difference]: With dead ends: 22944 [2024-11-22 12:03:48,431 INFO L226 Difference]: Without dead ends: 16128 [2024-11-22 12:03:48,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:03:48,448 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 1418 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:48,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1898 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:03:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16128 states. [2024-11-22 12:03:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16128 to 8201. [2024-11-22 12:03:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 7726 states have (on average 1.6158426093709553) internal successors, (12484), 7738 states have internal predecessors, (12484), 451 states have call successors, (451), 23 states have call predecessors, (451), 23 states have return successors, (451), 439 states have call predecessors, (451), 451 states have call successors, (451) [2024-11-22 12:03:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 13386 transitions. [2024-11-22 12:03:48,723 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 13386 transitions. Word has length 490 [2024-11-22 12:03:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:48,724 INFO L471 AbstractCegarLoop]: Abstraction has 8201 states and 13386 transitions. [2024-11-22 12:03:48,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 13386 transitions. [2024-11-22 12:03:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-22 12:03:48,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:48,734 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:48,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 12:03:48,734 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:48,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -422193717, now seen corresponding path program 1 times [2024-11-22 12:03:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667340536] [2024-11-22 12:03:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:49,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:49,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667340536] [2024-11-22 12:03:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667340536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:03:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472114106] [2024-11-22 12:03:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:49,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:03:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:03:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:03:49,615 INFO L87 Difference]: Start difference. First operand 8201 states and 13386 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:50,671 INFO L93 Difference]: Finished difference Result 18042 states and 29478 transitions. [2024-11-22 12:03:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 12:03:50,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 490 [2024-11-22 12:03:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:50,694 INFO L225 Difference]: With dead ends: 18042 [2024-11-22 12:03:50,695 INFO L226 Difference]: Without dead ends: 10042 [2024-11-22 12:03:50,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-22 12:03:50,712 INFO L432 NwaCegarLoop]: 877 mSDtfsCounter, 2058 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:50,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 3444 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 12:03:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2024-11-22 12:03:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 8205. [2024-11-22 12:03:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 7729 states have (on average 1.6135334454651313) internal successors, (12471), 7741 states have internal predecessors, (12471), 451 states have call successors, (451), 24 states have call predecessors, (451), 24 states have return successors, (451), 439 states have call predecessors, (451), 451 states have call successors, (451) [2024-11-22 12:03:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 13373 transitions. [2024-11-22 12:03:50,959 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 13373 transitions. Word has length 490 [2024-11-22 12:03:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:50,960 INFO L471 AbstractCegarLoop]: Abstraction has 8205 states and 13373 transitions. [2024-11-22 12:03:50,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 13373 transitions. [2024-11-22 12:03:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-22 12:03:50,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:50,970 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:50,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 12:03:50,971 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:50,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash -674711531, now seen corresponding path program 1 times [2024-11-22 12:03:50,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481207327] [2024-11-22 12:03:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481207327] [2024-11-22 12:03:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481207327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:03:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227046288] [2024-11-22 12:03:53,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:53,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:03:53,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:53,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:03:53,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:03:53,063 INFO L87 Difference]: Start difference. First operand 8205 states and 13373 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:54,702 INFO L93 Difference]: Finished difference Result 24821 states and 40426 transitions. [2024-11-22 12:03:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 12:03:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 491 [2024-11-22 12:03:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:54,739 INFO L225 Difference]: With dead ends: 24821 [2024-11-22 12:03:54,739 INFO L226 Difference]: Without dead ends: 16821 [2024-11-22 12:03:54,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-22 12:03:54,757 INFO L432 NwaCegarLoop]: 1377 mSDtfsCounter, 1851 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:54,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 4220 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 12:03:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states. [2024-11-22 12:03:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 14095. [2024-11-22 12:03:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 13333 states have (on average 1.6131403285082127) internal successors, (21508), 13355 states have internal predecessors, (21508), 719 states have call successors, (719), 42 states have call predecessors, (719), 42 states have return successors, (719), 697 states have call predecessors, (719), 719 states have call successors, (719) [2024-11-22 12:03:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 22946 transitions. [2024-11-22 12:03:55,129 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 22946 transitions. Word has length 491 [2024-11-22 12:03:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:55,130 INFO L471 AbstractCegarLoop]: Abstraction has 14095 states and 22946 transitions. [2024-11-22 12:03:55,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 22946 transitions. [2024-11-22 12:03:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-22 12:03:55,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:55,145 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:55,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 12:03:55,146 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:55,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1641445745, now seen corresponding path program 1 times [2024-11-22 12:03:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131411369] [2024-11-22 12:03:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:55,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131411369] [2024-11-22 12:03:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131411369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:55,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:03:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910098346] [2024-11-22 12:03:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:55,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:03:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:55,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:03:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:55,569 INFO L87 Difference]: Start difference. First operand 14095 states and 22946 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:55,861 INFO L93 Difference]: Finished difference Result 27934 states and 45505 transitions. [2024-11-22 12:03:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:03:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 491 [2024-11-22 12:03:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:55,898 INFO L225 Difference]: With dead ends: 27934 [2024-11-22 12:03:55,898 INFO L226 Difference]: Without dead ends: 14095 [2024-11-22 12:03:55,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:03:55,920 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 0 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:55,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1051 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:03:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14095 states. [2024-11-22 12:03:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14095 to 14095. [2024-11-22 12:03:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 13333 states have (on average 1.6113402835070876) internal successors, (21484), 13355 states have internal predecessors, (21484), 719 states have call successors, (719), 42 states have call predecessors, (719), 42 states have return successors, (719), 697 states have call predecessors, (719), 719 states have call successors, (719) [2024-11-22 12:03:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 22922 transitions. [2024-11-22 12:03:56,364 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 22922 transitions. Word has length 491 [2024-11-22 12:03:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:56,364 INFO L471 AbstractCegarLoop]: Abstraction has 14095 states and 22922 transitions. [2024-11-22 12:03:56,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 22922 transitions. [2024-11-22 12:03:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-22 12:03:56,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:56,380 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:56,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 12:03:56,380 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:56,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 584714543, now seen corresponding path program 1 times [2024-11-22 12:03:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481413534] [2024-11-22 12:03:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:03:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:03:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:03:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481413534] [2024-11-22 12:03:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481413534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:03:57,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:03:57,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:03:57,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806802538] [2024-11-22 12:03:57,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:03:57,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:03:57,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:03:57,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:03:57,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:57,086 INFO L87 Difference]: Start difference. First operand 14095 states and 22922 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:03:57,562 INFO L93 Difference]: Finished difference Result 19647 states and 31961 transitions. [2024-11-22 12:03:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:03:57,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 491 [2024-11-22 12:03:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:03:57,594 INFO L225 Difference]: With dead ends: 19647 [2024-11-22 12:03:57,594 INFO L226 Difference]: Without dead ends: 17566 [2024-11-22 12:03:57,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:03:57,602 INFO L432 NwaCegarLoop]: 1030 mSDtfsCounter, 705 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:03:57,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2203 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:03:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2024-11-22 12:03:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 13151. [2024-11-22 12:03:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13151 states, 12471 states have (on average 1.613503327720311) internal successors, (20122), 12483 states have internal predecessors, (20122), 641 states have call successors, (641), 38 states have call predecessors, (641), 38 states have return successors, (641), 629 states have call predecessors, (641), 641 states have call successors, (641) [2024-11-22 12:03:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13151 states to 13151 states and 21404 transitions. [2024-11-22 12:03:57,931 INFO L78 Accepts]: Start accepts. Automaton has 13151 states and 21404 transitions. Word has length 491 [2024-11-22 12:03:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:03:57,931 INFO L471 AbstractCegarLoop]: Abstraction has 13151 states and 21404 transitions. [2024-11-22 12:03:57,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:03:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13151 states and 21404 transitions. [2024-11-22 12:03:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-22 12:03:57,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:03:57,951 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:57,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 12:03:57,952 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:03:57,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:03:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1056070893, now seen corresponding path program 1 times [2024-11-22 12:03:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:03:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620735211] [2024-11-22 12:03:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:03:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:03:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:04:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:04:03,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:04:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620735211] [2024-11-22 12:04:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620735211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:04:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:04:03,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-22 12:04:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446612115] [2024-11-22 12:04:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:04:03,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 12:04:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:04:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 12:04:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-22 12:04:03,343 INFO L87 Difference]: Start difference. First operand 13151 states and 21404 transitions. Second operand has 22 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 22 states have internal predecessors, (159), 6 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2024-11-22 12:04:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:04:28,411 INFO L93 Difference]: Finished difference Result 89887 states and 144978 transitions. [2024-11-22 12:04:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 12:04:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 22 states have internal predecessors, (159), 6 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) Word has length 491 [2024-11-22 12:04:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:04:28,541 INFO L225 Difference]: With dead ends: 89887 [2024-11-22 12:04:28,541 INFO L226 Difference]: Without dead ends: 77012 [2024-11-22 12:04:28,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 12:04:28,567 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 11982 mSDsluCounter, 8786 mSDsCounter, 0 mSdLazyCounter, 6763 mSolverCounterSat, 2693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11982 SdHoareTripleChecker+Valid, 9656 SdHoareTripleChecker+Invalid, 9456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2693 IncrementalHoareTripleChecker+Valid, 6763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:04:28,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11982 Valid, 9656 Invalid, 9456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2693 Valid, 6763 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-22 12:04:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77012 states. [2024-11-22 12:04:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77012 to 41081. [2024-11-22 12:04:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41081 states, 39392 states have (on average 1.612230909829407) internal successors, (63509), 39434 states have internal predecessors, (63509), 1561 states have call successors, (1561), 127 states have call predecessors, (1561), 127 states have return successors, (1561), 1519 states have call predecessors, (1561), 1561 states have call successors, (1561) [2024-11-22 12:04:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41081 states to 41081 states and 66631 transitions. [2024-11-22 12:04:30,147 INFO L78 Accepts]: Start accepts. Automaton has 41081 states and 66631 transitions. Word has length 491 [2024-11-22 12:04:30,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:04:30,148 INFO L471 AbstractCegarLoop]: Abstraction has 41081 states and 66631 transitions. [2024-11-22 12:04:30,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.2272727272727275) internal successors, (159), 22 states have internal predecessors, (159), 6 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2024-11-22 12:04:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 41081 states and 66631 transitions. [2024-11-22 12:04:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-22 12:04:30,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:04:30,179 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:30,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 12:04:30,180 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:04:30,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:04:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1071589611, now seen corresponding path program 1 times [2024-11-22 12:04:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:04:30,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608045822] [2024-11-22 12:04:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:04:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:04:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:04:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-22 12:04:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:04:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608045822] [2024-11-22 12:04:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608045822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:04:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408897810] [2024-11-22 12:04:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:04:31,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:04:31,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:04:31,528 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 12:04:31,529 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 12:04:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:04:31,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 12:04:31,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:04:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4476 proven. 93 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2024-11-22 12:04:32,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:04:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 105 proven. 93 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-22 12:04:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408897810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:04:33,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:04:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 16 [2024-11-22 12:04:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264553982] [2024-11-22 12:04:33,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:04:33,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 12:04:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:04:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 12:04:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-22 12:04:33,488 INFO L87 Difference]: Start difference. First operand 41081 states and 66631 transitions. Second operand has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 5 states have call predecessors, (201), 6 states have call successors, (201) [2024-11-22 12:04:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:04:36,686 INFO L93 Difference]: Finished difference Result 100215 states and 162489 transitions. [2024-11-22 12:04:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 12:04:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 5 states have call predecessors, (201), 6 states have call successors, (201) Word has length 491 [2024-11-22 12:04:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:04:36,795 INFO L225 Difference]: With dead ends: 100215 [2024-11-22 12:04:36,795 INFO L226 Difference]: Without dead ends: 59494 [2024-11-22 12:04:36,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 12:04:36,823 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 3653 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:04:36,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3654 Valid, 3410 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 12:04:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59494 states. [2024-11-22 12:04:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59494 to 55605. [2024-11-22 12:04:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55605 states, 53390 states have (on average 1.5972092152088406) internal successors, (85275), 53436 states have internal predecessors, (85275), 1987 states have call successors, (1987), 227 states have call predecessors, (1987), 227 states have return successors, (1987), 1941 states have call predecessors, (1987), 1987 states have call successors, (1987) [2024-11-22 12:04:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55605 states to 55605 states and 89249 transitions. [2024-11-22 12:04:38,998 INFO L78 Accepts]: Start accepts. Automaton has 55605 states and 89249 transitions. Word has length 491 [2024-11-22 12:04:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:04:38,999 INFO L471 AbstractCegarLoop]: Abstraction has 55605 states and 89249 transitions. [2024-11-22 12:04:38,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 5 states have call predecessors, (201), 6 states have call successors, (201) [2024-11-22 12:04:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 55605 states and 89249 transitions. [2024-11-22 12:04:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-11-22 12:04:39,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:04:39,034 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:39,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 12:04:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:04:39,239 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:04:39,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:04:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash -8420376, now seen corresponding path program 1 times [2024-11-22 12:04:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:04:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752524847] [2024-11-22 12:04:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:04:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:04:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:04:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 12 proven. 186 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-22 12:04:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:04:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752524847] [2024-11-22 12:04:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752524847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:04:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824086591] [2024-11-22 12:04:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:04:40,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:04:40,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:04:40,762 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 12:04:40,763 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 12:04:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:04:41,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 12:04:41,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:04:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1066 proven. 186 refuted. 0 times theorem prover too weak. 7592 trivial. 0 not checked. [2024-11-22 12:04:41,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:04:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 12 proven. 186 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-22 12:04:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824086591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:04:42,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:04:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-22 12:04:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259703271] [2024-11-22 12:04:42,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:04:42,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 12:04:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:04:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 12:04:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-22 12:04:42,338 INFO L87 Difference]: Start difference. First operand 55605 states and 89249 transitions. Second operand has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2024-11-22 12:04:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:04:44,504 INFO L93 Difference]: Finished difference Result 112134 states and 179676 transitions. [2024-11-22 12:04:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 12:04:44,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 493 [2024-11-22 12:04:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:04:44,591 INFO L225 Difference]: With dead ends: 112134 [2024-11-22 12:04:44,591 INFO L226 Difference]: Without dead ends: 56897 [2024-11-22 12:04:44,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 979 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-22 12:04:44,646 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 277 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:04:44,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2864 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:04:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56897 states.