./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-10.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 2130977652141f87aaeab3d55d3a6ad4866e75f526c9ed5f7fd20a11fd2ef6f1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:39:56,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:39:56,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:39:56,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:39:56,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:39:56,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:39:56,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:39:56,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:39:56,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:39:56,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:39:56,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:39:56,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:39:56,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:39:56,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:39:56,664 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:39:56,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:39:56,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:39:56,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:39:56,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:39:56,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:39:56,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:39:56,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:39:56,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:39:56,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:39:56,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:39:56,670 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:39:56,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:39:56,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:39:56,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:39:56,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:39:56,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:39:56,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:39:56,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:39:56,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:39:56,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:39:56,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:39:56,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:39:56,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:39:56,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:39:56,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:39:56,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:39:56,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:39:56,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2130977652141f87aaeab3d55d3a6ad4866e75f526c9ed5f7fd20a11fd2ef6f1 [2024-11-18 23:39:56,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:39:57,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:39:57,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:39:57,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:39:57,011 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:39:57,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-10.i [2024-11-18 23:39:58,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:39:58,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:39:58,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-10.i [2024-11-18 23:39:58,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108459970/436a308f152e4fd88ce1c1866983d912/FLAG1cd38f21d [2024-11-18 23:39:59,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108459970/436a308f152e4fd88ce1c1866983d912 [2024-11-18 23:39:59,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:39:59,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:39:59,021 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:39:59,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:39:59,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:39:59,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418751d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59, skipping insertion in model container [2024-11-18 23:39:59,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:39:59,249 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-10.i[916,929] [2024-11-18 23:39:59,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:39:59,428 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:39:59,441 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-10.i[916,929] [2024-11-18 23:39:59,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:39:59,569 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:39:59,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59 WrapperNode [2024-11-18 23:39:59,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:39:59,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:39:59,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:39:59,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:39:59,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,671 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 482 [2024-11-18 23:39:59,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:39:59,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:39:59,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:39:59,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:39:59,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,751 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]. [2024-11-18 23:39:59,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:39:59,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:39:59,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:39:59,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:39:59,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (1/1) ... [2024-11-18 23:39:59,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:39:59,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:39:59,880 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) [2024-11-18 23:39:59,886 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 [2024-11-18 23:39:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:39:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:39:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:39:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:39:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:39:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:40:00,126 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:40:00,129 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:40:01,046 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-18 23:40:01,046 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:40:01,067 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:40:01,067 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:40:01,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:01 BoogieIcfgContainer [2024-11-18 23:40:01,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:40:01,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:40:01,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:40:01,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:40:01,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:39:59" (1/3) ... [2024-11-18 23:40:01,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd8a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:01, skipping insertion in model container [2024-11-18 23:40:01,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:39:59" (2/3) ... [2024-11-18 23:40:01,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd8a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:01, skipping insertion in model container [2024-11-18 23:40:01,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:01" (3/3) ... [2024-11-18 23:40:01,122 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-10.i [2024-11-18 23:40:01,138 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:40:01,138 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:40:01,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:40:01,224 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;@4fc7b646, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:40:01,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:40:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:40:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:40:01,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:01,261 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:01,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:01,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 705412045, now seen corresponding path program 1 times [2024-11-18 23:40:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:01,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126540605] [2024-11-18 23:40:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:01,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-18 23:40:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126540605] [2024-11-18 23:40:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126540605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603249118] [2024-11-18 23:40:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:02,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:02,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:02,005 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) [2024-11-18 23:40:02,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:40:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:02,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:40:02,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-18 23:40:02,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:40:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603249118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:02,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:40:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:40:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887319641] [2024-11-18 23:40:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:02,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:40:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:40:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:02,444 INFO L87 Difference]: Start difference. First operand has 201 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-18 23:40:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:02,508 INFO L93 Difference]: Finished difference Result 395 states and 705 transitions. [2024-11-18 23:40:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:40:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 411 [2024-11-18 23:40:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:02,527 INFO L225 Difference]: With dead ends: 395 [2024-11-18 23:40:02,527 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 23:40:02,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:02,538 INFO L432 NwaCegarLoop]: 316 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, 316 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 [2024-11-18 23:40:02,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 23:40:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-18 23:40:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 130 states have (on average 1.4307692307692308) internal successors, (186), 130 states have internal predecessors, (186), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:40:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 316 transitions. [2024-11-18 23:40:02,620 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 316 transitions. Word has length 411 [2024-11-18 23:40:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:02,621 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 316 transitions. [2024-11-18 23:40:02,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-18 23:40:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 316 transitions. [2024-11-18 23:40:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:40:02,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:02,638 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:02,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:40:02,839 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 [2024-11-18 23:40:02,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -417523837, now seen corresponding path program 1 times [2024-11-18 23:40:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355441840] [2024-11-18 23:40:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355441840] [2024-11-18 23:40:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355441840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:03,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:03,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442475925] [2024-11-18 23:40:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:03,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:03,300 INFO L87 Difference]: Start difference. First operand 197 states and 316 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:03,426 INFO L93 Difference]: Finished difference Result 584 states and 940 transitions. [2024-11-18 23:40:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 411 [2024-11-18 23:40:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:03,440 INFO L225 Difference]: With dead ends: 584 [2024-11-18 23:40:03,440 INFO L226 Difference]: Without dead ends: 390 [2024-11-18 23:40:03,442 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 [2024-11-18 23:40:03,447 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 290 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:03,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 873 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-18 23:40:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2024-11-18 23:40:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 255 states have (on average 1.427450980392157) internal successors, (364), 255 states have internal predecessors, (364), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-18 23:40:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 624 transitions. [2024-11-18 23:40:03,571 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 624 transitions. Word has length 411 [2024-11-18 23:40:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:03,575 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 624 transitions. [2024-11-18 23:40:03,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 624 transitions. [2024-11-18 23:40:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:40:03,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:03,583 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:03,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:40:03,585 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:03,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1828055617, now seen corresponding path program 1 times [2024-11-18 23:40:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799860944] [2024-11-18 23:40:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:04,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799860944] [2024-11-18 23:40:04,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799860944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:04,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:04,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013529770] [2024-11-18 23:40:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:04,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:04,376 INFO L87 Difference]: Start difference. First operand 388 states and 624 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:04,454 INFO L93 Difference]: Finished difference Result 1158 states and 1866 transitions. [2024-11-18 23:40:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 411 [2024-11-18 23:40:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:04,467 INFO L225 Difference]: With dead ends: 1158 [2024-11-18 23:40:04,468 INFO L226 Difference]: Without dead ends: 773 [2024-11-18 23:40:04,470 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 [2024-11-18 23:40:04,472 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 178 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:04,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 620 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-18 23:40:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 769. [2024-11-18 23:40:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 504 states have (on average 1.4246031746031746) internal successors, (718), 504 states have internal predecessors, (718), 260 states have call successors, (260), 4 states have call predecessors, (260), 4 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-18 23:40:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1238 transitions. [2024-11-18 23:40:04,658 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1238 transitions. Word has length 411 [2024-11-18 23:40:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:04,661 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1238 transitions. [2024-11-18 23:40:04,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1238 transitions. [2024-11-18 23:40:04,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-18 23:40:04,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:04,671 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:04,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:40:04,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:04,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1668567853, now seen corresponding path program 1 times [2024-11-18 23:40:04,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:04,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776665756] [2024-11-18 23:40:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:04,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:06,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776665756] [2024-11-18 23:40:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776665756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:06,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:06,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:06,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437481069] [2024-11-18 23:40:06,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:06,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:06,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:06,117 INFO L87 Difference]: Start difference. First operand 769 states and 1238 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:06,510 INFO L93 Difference]: Finished difference Result 1535 states and 2473 transitions. [2024-11-18 23:40:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2024-11-18 23:40:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:06,518 INFO L225 Difference]: With dead ends: 1535 [2024-11-18 23:40:06,518 INFO L226 Difference]: Without dead ends: 769 [2024-11-18 23:40:06,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:06,526 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 307 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:06,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 478 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:40:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-18 23:40:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2024-11-18 23:40:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 504 states have (on average 1.4166666666666667) internal successors, (714), 504 states have internal predecessors, (714), 260 states have call successors, (260), 4 states have call predecessors, (260), 4 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-18 23:40:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1234 transitions. [2024-11-18 23:40:06,631 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1234 transitions. Word has length 412 [2024-11-18 23:40:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:06,632 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1234 transitions. [2024-11-18 23:40:06,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1234 transitions. [2024-11-18 23:40:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-18 23:40:06,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:06,640 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:06,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:40:06,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:06,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash -703171409, now seen corresponding path program 1 times [2024-11-18 23:40:06,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:06,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404882991] [2024-11-18 23:40:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:09,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404882991] [2024-11-18 23:40:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404882991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:09,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:09,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:40:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071394918] [2024-11-18 23:40:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:09,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:40:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:40:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:09,029 INFO L87 Difference]: Start difference. First operand 769 states and 1234 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:09,549 INFO L93 Difference]: Finished difference Result 1563 states and 2500 transitions. [2024-11-18 23:40:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:40:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2024-11-18 23:40:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:09,560 INFO L225 Difference]: With dead ends: 1563 [2024-11-18 23:40:09,560 INFO L226 Difference]: Without dead ends: 797 [2024-11-18 23:40:09,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:09,564 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 101 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:09,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 744 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:40:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2024-11-18 23:40:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 794. [2024-11-18 23:40:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 519 states have (on average 1.4046242774566473) internal successors, (729), 520 states have internal predecessors, (729), 268 states have call successors, (268), 6 states have call predecessors, (268), 6 states have return successors, (268), 267 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-18 23:40:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1265 transitions. [2024-11-18 23:40:09,671 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1265 transitions. Word has length 412 [2024-11-18 23:40:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:09,672 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1265 transitions. [2024-11-18 23:40:09,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1265 transitions. [2024-11-18 23:40:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:40:09,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:09,679 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:09,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:40:09,679 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:09,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash 973862631, now seen corresponding path program 1 times [2024-11-18 23:40:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:09,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124769215] [2024-11-18 23:40:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:10,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124769215] [2024-11-18 23:40:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124769215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:10,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:40:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302110323] [2024-11-18 23:40:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:10,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:40:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:40:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:10,159 INFO L87 Difference]: Start difference. First operand 794 states and 1265 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:10,672 INFO L93 Difference]: Finished difference Result 2029 states and 3242 transitions. [2024-11-18 23:40:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:40:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-18 23:40:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:10,684 INFO L225 Difference]: With dead ends: 2029 [2024-11-18 23:40:10,685 INFO L226 Difference]: Without dead ends: 1251 [2024-11-18 23:40:10,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:10,690 INFO L432 NwaCegarLoop]: 619 mSDtfsCounter, 308 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:10,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1556 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:40:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-11-18 23:40:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 802. [2024-11-18 23:40:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 527 states have (on average 1.4022770398481974) internal successors, (739), 528 states have internal predecessors, (739), 268 states have call successors, (268), 6 states have call predecessors, (268), 6 states have return successors, (268), 267 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-18 23:40:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1275 transitions. [2024-11-18 23:40:10,901 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1275 transitions. Word has length 413 [2024-11-18 23:40:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:10,902 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1275 transitions. [2024-11-18 23:40:10,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1275 transitions. [2024-11-18 23:40:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:40:10,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:10,910 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:10,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:40:10,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:10,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1035902245, now seen corresponding path program 1 times [2024-11-18 23:40:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649631176] [2024-11-18 23:40:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:11,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649631176] [2024-11-18 23:40:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649631176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:11,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216545486] [2024-11-18 23:40:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:11,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:11,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:11,381 INFO L87 Difference]: Start difference. First operand 802 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:11,532 INFO L93 Difference]: Finished difference Result 1983 states and 3152 transitions. [2024-11-18 23:40:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-18 23:40:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:11,543 INFO L225 Difference]: With dead ends: 1983 [2024-11-18 23:40:11,543 INFO L226 Difference]: Without dead ends: 1197 [2024-11-18 23:40:11,546 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 [2024-11-18 23:40:11,547 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 308 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:11,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-18 23:40:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1195. [2024-11-18 23:40:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 786 states have (on average 1.3994910941475827) internal successors, (1100), 787 states have internal predecessors, (1100), 398 states have call successors, (398), 10 states have call predecessors, (398), 10 states have return successors, (398), 397 states have call predecessors, (398), 398 states have call successors, (398) [2024-11-18 23:40:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1896 transitions. [2024-11-18 23:40:11,718 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1896 transitions. Word has length 413 [2024-11-18 23:40:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:11,719 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1896 transitions. [2024-11-18 23:40:11,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1896 transitions. [2024-11-18 23:40:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:40:11,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:11,725 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:11,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:40:11,725 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -55968481, now seen corresponding path program 1 times [2024-11-18 23:40:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265937005] [2024-11-18 23:40:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265937005] [2024-11-18 23:40:12,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265937005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:12,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:12,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150771313] [2024-11-18 23:40:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:12,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:12,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:12,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:12,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:12,470 INFO L87 Difference]: Start difference. First operand 1195 states and 1896 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:13,181 INFO L93 Difference]: Finished difference Result 4198 states and 6622 transitions. [2024-11-18 23:40:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-18 23:40:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:13,205 INFO L225 Difference]: With dead ends: 4198 [2024-11-18 23:40:13,205 INFO L226 Difference]: Without dead ends: 3019 [2024-11-18 23:40:13,212 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 [2024-11-18 23:40:13,213 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 605 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:13,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 915 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:40:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2024-11-18 23:40:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 2213. [2024-11-18 23:40:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1607 states have (on average 1.4287492221530802) internal successors, (2296), 1615 states have internal predecessors, (2296), 583 states have call successors, (583), 22 states have call predecessors, (583), 22 states have return successors, (583), 575 states have call predecessors, (583), 583 states have call successors, (583) [2024-11-18 23:40:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3462 transitions. [2024-11-18 23:40:13,599 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3462 transitions. Word has length 413 [2024-11-18 23:40:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:13,600 INFO L471 AbstractCegarLoop]: Abstraction has 2213 states and 3462 transitions. [2024-11-18 23:40:13,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3462 transitions. [2024-11-18 23:40:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:40:13,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:13,608 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:13,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:40:13,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:13,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash 91105638, now seen corresponding path program 1 times [2024-11-18 23:40:13,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476045787] [2024-11-18 23:40:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:13,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-18 23:40:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476045787] [2024-11-18 23:40:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476045787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:18,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:18,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:40:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771266675] [2024-11-18 23:40:18,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:18,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:40:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:40:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:40:18,250 INFO L87 Difference]: Start difference. First operand 2213 states and 3462 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:20,341 INFO L93 Difference]: Finished difference Result 6752 states and 10429 transitions. [2024-11-18 23:40:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:40:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-18 23:40:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:20,371 INFO L225 Difference]: With dead ends: 6752 [2024-11-18 23:40:20,372 INFO L226 Difference]: Without dead ends: 4555 [2024-11-18 23:40:20,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:40:20,384 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 555 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:20,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2078 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 23:40:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2024-11-18 23:40:20,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 2908. [2024-11-18 23:40:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2266 states have (on average 1.4536628420123565) internal successors, (3294), 2278 states have internal predecessors, (3294), 615 states have call successors, (615), 26 states have call predecessors, (615), 26 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2024-11-18 23:40:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4524 transitions. [2024-11-18 23:40:20,713 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4524 transitions. Word has length 413 [2024-11-18 23:40:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:20,714 INFO L471 AbstractCegarLoop]: Abstraction has 2908 states and 4524 transitions. [2024-11-18 23:40:20,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-18 23:40:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4524 transitions. [2024-11-18 23:40:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:40:20,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:20,720 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:20,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:40:20,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:20,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:20,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1754261528, now seen corresponding path program 1 times [2024-11-18 23:40:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:20,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126122991] [2024-11-18 23:40:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:20,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat