./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-28.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_amount250_file-28.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 3fb6d49eff13d62236c26c76112d3edbdbe5247c358b6cacd9ecacff32cf6529 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:39:03,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:39:03,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:39:03,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:39:03,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:39:03,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:39:03,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:39:03,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:39:03,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:39:03,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:39:03,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:39:03,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:39:03,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:39:03,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:39:03,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:39:03,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:39:03,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:39:03,604 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:39:03,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:39:03,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:39:03,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:39:03,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:39:03,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:39:03,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:39:03,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:39:03,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:39:03,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:39:03,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:39:03,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:39:03,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:39:03,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:39:03,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:39:03,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:39:03,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:39:03,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:39:03,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:39:03,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:39:03,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:39:03,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:39:03,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:39:03,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:39:03,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:39:03,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb6d49eff13d62236c26c76112d3edbdbe5247c358b6cacd9ecacff32cf6529 [2024-11-22 11:39:03,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:39:03,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:39:03,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:39:03,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:39:03,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:39:03,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-28.i [2024-11-22 11:39:05,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:39:05,476 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:39:05,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-28.i [2024-11-22 11:39:05,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3bd1681/631756443cff4b5894d9a0b111f2c777/FLAG4959ff791 [2024-11-22 11:39:05,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3bd1681/631756443cff4b5894d9a0b111f2c777 [2024-11-22 11:39:05,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:39:05,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:39:05,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:39:05,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:39:05,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:39:05,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:39:05" (1/1) ... [2024-11-22 11:39:05,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f521007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:05, skipping insertion in model container [2024-11-22 11:39:05,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:39:05" (1/1) ... [2024-11-22 11:39:05,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:39:05,784 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_amount250_file-28.i[916,929] [2024-11-22 11:39:06,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:39:06,038 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:39:06,059 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_amount250_file-28.i[916,929] [2024-11-22 11:39:06,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:39:06,131 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:39:06,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06 WrapperNode [2024-11-22 11:39:06,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:39:06,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:39:06,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:39:06,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:39:06,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,275 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 411 [2024-11-22 11:39:06,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:39:06,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:39:06,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:39:06,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:39:06,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,359 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 11:39:06,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:39:06,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:39:06,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:39:06,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:39:06,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (1/1) ... [2024-11-22 11:39:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:39:06,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:39:06,454 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 11:39:06,465 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 11:39:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:39:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:39:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:39:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:39:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:39:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:39:06,574 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:39:06,575 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:39:07,337 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-22 11:39:07,338 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:39:07,352 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:39:07,353 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:39:07,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:39:07 BoogieIcfgContainer [2024-11-22 11:39:07,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:39:07,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:39:07,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:39:07,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:39:07,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:39:05" (1/3) ... [2024-11-22 11:39:07,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f6ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:39:07, skipping insertion in model container [2024-11-22 11:39:07,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:39:06" (2/3) ... [2024-11-22 11:39:07,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f6ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:39:07, skipping insertion in model container [2024-11-22 11:39:07,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:39:07" (3/3) ... [2024-11-22 11:39:07,359 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-28.i [2024-11-22 11:39:07,370 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:39:07,371 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:39:07,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:39:07,436 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;@7ac5f958, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:39:07,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:39:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 127 states have internal predecessors, (191), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 11:39:07,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:07,464 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:07,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:07,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2037227511, now seen corresponding path program 1 times [2024-11-22 11:39:07,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988338787] [2024-11-22 11:39:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-22 11:39:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988338787] [2024-11-22 11:39:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988338787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:39:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288144894] [2024-11-22 11:39:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:07,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:39:07,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:39:07,866 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 11:39:07,867 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 11:39:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:08,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:39:08,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:39:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-22 11:39:08,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:39:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288144894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:39:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:39:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460605526] [2024-11-22 11:39:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:08,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:39:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:39:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:39:08,138 INFO L87 Difference]: Start difference. First operand has 172 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 127 states have internal predecessors, (191), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:39:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:08,171 INFO L93 Difference]: Finished difference Result 337 states and 591 transitions. [2024-11-22 11:39:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:39:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 297 [2024-11-22 11:39:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:08,185 INFO L225 Difference]: With dead ends: 337 [2024-11-22 11:39:08,185 INFO L226 Difference]: Without dead ends: 168 [2024-11-22 11:39:08,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 298 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 11:39:08,191 INFO L432 NwaCegarLoop]: 270 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, 270 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 11:39:08,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:39:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-22 11:39:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-22 11:39:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 123 states have internal predecessors, (184), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions. [2024-11-22 11:39:08,246 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 297 [2024-11-22 11:39:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:08,247 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 270 transitions. [2024-11-22 11:39:08,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:39:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions. [2024-11-22 11:39:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 11:39:08,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:08,252 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:08,264 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 11:39:08,456 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 11:39:08,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:08,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1759020349, now seen corresponding path program 1 times [2024-11-22 11:39:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:08,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106748886] [2024-11-22 11:39:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:08,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106748886] [2024-11-22 11:39:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106748886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:09,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:09,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:39:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694370157] [2024-11-22 11:39:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:09,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:39:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:39:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:39:09,704 INFO L87 Difference]: Start difference. First operand 168 states and 270 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:10,463 INFO L93 Difference]: Finished difference Result 447 states and 717 transitions. [2024-11-22 11:39:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:39:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 297 [2024-11-22 11:39:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:10,481 INFO L225 Difference]: With dead ends: 447 [2024-11-22 11:39:10,481 INFO L226 Difference]: Without dead ends: 282 [2024-11-22 11:39:10,485 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 11:39:10,490 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 179 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:10,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 684 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:39:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-22 11:39:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 187. [2024-11-22 11:39:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 142 states have (on average 1.5140845070422535) internal successors, (215), 142 states have internal predecessors, (215), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 301 transitions. [2024-11-22 11:39:10,557 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 301 transitions. Word has length 297 [2024-11-22 11:39:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:10,563 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 301 transitions. [2024-11-22 11:39:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 301 transitions. [2024-11-22 11:39:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 11:39:10,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:10,576 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:10,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:39:10,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:10,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1721086533, now seen corresponding path program 1 times [2024-11-22 11:39:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323414372] [2024-11-22 11:39:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:11,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323414372] [2024-11-22 11:39:11,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323414372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:11,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:11,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:39:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122275902] [2024-11-22 11:39:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:11,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:39:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:39:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:39:11,249 INFO L87 Difference]: Start difference. First operand 187 states and 301 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:11,329 INFO L93 Difference]: Finished difference Result 371 states and 599 transitions. [2024-11-22 11:39:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:39:11,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 297 [2024-11-22 11:39:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:11,338 INFO L225 Difference]: With dead ends: 371 [2024-11-22 11:39:11,338 INFO L226 Difference]: Without dead ends: 187 [2024-11-22 11:39:11,339 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 11:39:11,340 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:11,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 781 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:39:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-22 11:39:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-11-22 11:39:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 142 states have (on average 1.5070422535211268) internal successors, (214), 142 states have internal predecessors, (214), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 300 transitions. [2024-11-22 11:39:11,359 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 300 transitions. Word has length 297 [2024-11-22 11:39:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:11,361 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 300 transitions. [2024-11-22 11:39:11,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 300 transitions. [2024-11-22 11:39:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 11:39:11,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:11,363 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:11,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:39:11,364 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:11,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1298384707, now seen corresponding path program 1 times [2024-11-22 11:39:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322345695] [2024-11-22 11:39:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 30 proven. 96 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:39:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322345695] [2024-11-22 11:39:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322345695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:39:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077588381] [2024-11-22 11:39:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:12,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:39:12,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:39:12,675 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 11:39:12,676 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 11:39:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:12,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 11:39:12,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:39:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 588 proven. 9 refuted. 0 times theorem prover too weak. 3015 trivial. 0 not checked. [2024-11-22 11:39:13,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:39:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 117 proven. 9 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:39:13,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077588381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:39:13,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:39:13,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-22 11:39:13,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876611370] [2024-11-22 11:39:13,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:39:13,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:39:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:39:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:39:13,457 INFO L87 Difference]: Start difference. First operand 187 states and 300 transitions. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 4 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-22 11:39:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:14,005 INFO L93 Difference]: Finished difference Result 383 states and 607 transitions. [2024-11-22 11:39:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 11:39:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 4 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 297 [2024-11-22 11:39:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:14,008 INFO L225 Difference]: With dead ends: 383 [2024-11-22 11:39:14,008 INFO L226 Difference]: Without dead ends: 199 [2024-11-22 11:39:14,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:39:14,009 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 567 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:14,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 729 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:39:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-22 11:39:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2024-11-22 11:39:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.4594594594594594) internal successors, (216), 148 states have internal predecessors, (216), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-11-22 11:39:14,026 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 297 [2024-11-22 11:39:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:14,027 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-11-22 11:39:14,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 4 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-22 11:39:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-11-22 11:39:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:39:14,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:14,029 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:14,039 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 11:39:14,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 11:39:14,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:14,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash 631795756, now seen corresponding path program 1 times [2024-11-22 11:39:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687161165] [2024-11-22 11:39:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687161165] [2024-11-22 11:39:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687161165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:15,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:39:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825952094] [2024-11-22 11:39:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:15,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:39:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:39:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:39:15,590 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:15,668 INFO L93 Difference]: Finished difference Result 479 states and 743 transitions. [2024-11-22 11:39:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:39:15,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 299 [2024-11-22 11:39:15,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:15,670 INFO L225 Difference]: With dead ends: 479 [2024-11-22 11:39:15,670 INFO L226 Difference]: Without dead ends: 273 [2024-11-22 11:39:15,671 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 11:39:15,671 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 328 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:15,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 484 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:39:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-22 11:39:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 224. [2024-11-22 11:39:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 177 states have (on average 1.463276836158192) internal successors, (259), 177 states have internal predecessors, (259), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 345 transitions. [2024-11-22 11:39:15,688 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 345 transitions. Word has length 299 [2024-11-22 11:39:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:15,688 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 345 transitions. [2024-11-22 11:39:15,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 345 transitions. [2024-11-22 11:39:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:39:15,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:15,690 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:15,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:39:15,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:15,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash 150715498, now seen corresponding path program 1 times [2024-11-22 11:39:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980607909] [2024-11-22 11:39:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:15,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980607909] [2024-11-22 11:39:15,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980607909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:15,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:15,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:39:15,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412934902] [2024-11-22 11:39:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:15,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:39:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:39:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:39:15,863 INFO L87 Difference]: Start difference. First operand 224 states and 345 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:15,908 INFO L93 Difference]: Finished difference Result 504 states and 777 transitions. [2024-11-22 11:39:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:39:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 299 [2024-11-22 11:39:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:15,911 INFO L225 Difference]: With dead ends: 504 [2024-11-22 11:39:15,911 INFO L226 Difference]: Without dead ends: 283 [2024-11-22 11:39:15,911 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 11:39:15,912 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 236 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:15,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:39:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-22 11:39:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 193. [2024-11-22 11:39:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.4315068493150684) internal successors, (209), 146 states have internal predecessors, (209), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:39:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2024-11-22 11:39:15,934 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 295 transitions. Word has length 299 [2024-11-22 11:39:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:15,935 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 295 transitions. [2024-11-22 11:39:15,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:39:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 295 transitions. [2024-11-22 11:39:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:39:15,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:15,938 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:15,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:39:15,938 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:15,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 852315372, now seen corresponding path program 1 times [2024-11-22 11:39:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:15,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802376646] [2024-11-22 11:39:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:26,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:26,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802376646] [2024-11-22 11:39:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802376646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:26,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:26,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 11:39:26,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627596609] [2024-11-22 11:39:26,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:26,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:39:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:39:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:39:26,127 INFO L87 Difference]: Start difference. First operand 193 states and 295 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-22 11:39:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:29,622 INFO L93 Difference]: Finished difference Result 1011 states and 1522 transitions. [2024-11-22 11:39:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 11:39:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 299 [2024-11-22 11:39:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:29,626 INFO L225 Difference]: With dead ends: 1011 [2024-11-22 11:39:29,626 INFO L226 Difference]: Without dead ends: 806 [2024-11-22 11:39:29,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-22 11:39:29,628 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 2049 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:29,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 1686 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-22 11:39:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-22 11:39:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 405. [2024-11-22 11:39:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 306 states have (on average 1.4150326797385622) internal successors, (433), 307 states have internal predecessors, (433), 89 states have call successors, (89), 9 states have call predecessors, (89), 9 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-22 11:39:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 611 transitions. [2024-11-22 11:39:29,657 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 611 transitions. Word has length 299 [2024-11-22 11:39:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:29,659 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 611 transitions. [2024-11-22 11:39:29,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-22 11:39:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 611 transitions. [2024-11-22 11:39:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:39:29,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:29,661 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:29,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:39:29,662 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:29,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2056448530, now seen corresponding path program 1 times [2024-11-22 11:39:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754770553] [2024-11-22 11:39:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:39:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:39:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:39:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754770553] [2024-11-22 11:39:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754770553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:39:51,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:39:51,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 11:39:51,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750480518] [2024-11-22 11:39:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:39:51,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 11:39:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:39:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 11:39:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:39:51,914 INFO L87 Difference]: Start difference. First operand 405 states and 611 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:39:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:39:55,022 INFO L93 Difference]: Finished difference Result 990 states and 1493 transitions. [2024-11-22 11:39:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 11:39:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 299 [2024-11-22 11:39:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:39:55,029 INFO L225 Difference]: With dead ends: 990 [2024-11-22 11:39:55,029 INFO L226 Difference]: Without dead ends: 725 [2024-11-22 11:39:55,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:39:55,030 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1586 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:39:55,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 1311 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 11:39:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-22 11:39:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 399. [2024-11-22 11:39:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 300 states have (on average 1.4133333333333333) internal successors, (424), 301 states have internal predecessors, (424), 89 states have call successors, (89), 9 states have call predecessors, (89), 9 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-22 11:39:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2024-11-22 11:39:55,075 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 299 [2024-11-22 11:39:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:39:55,076 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2024-11-22 11:39:55,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:39:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2024-11-22 11:39:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:39:55,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:39:55,080 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:55,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:39:55,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:39:55,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:39:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1391667926, now seen corresponding path program 1 times [2024-11-22 11:39:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:39:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012123276] [2024-11-22 11:39:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:39:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:39:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:40:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:40:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:40:28,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012123276] [2024-11-22 11:40:28,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012123276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:40:28,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:40:28,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 11:40:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126712218] [2024-11-22 11:40:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:40:28,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 11:40:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:40:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 11:40:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:40:28,602 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 3 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43)