./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-96.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-96.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 569b7b70ffce685c43ef1e1873a16a7ab7979c99918cf4e931b631a44259c89c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:47:02,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:47:03,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:47:03,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:47:03,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:47:03,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:47:03,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:47:03,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:47:03,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:47:03,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:47:03,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:47:03,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:47:03,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:47:03,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:47:03,082 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:47:03,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:47:03,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:47:03,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:47:03,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:47:03,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:47:03,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:47:03,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:47:03,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:47:03,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:47:03,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:47:03,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:47:03,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:47:03,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:47:03,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:47:03,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:47:03,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:47:03,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:47:03,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:47:03,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:47:03,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:47:03,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:47:03,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:47:03,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:47:03,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:47:03,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:47:03,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:47:03,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:47:03,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 569b7b70ffce685c43ef1e1873a16a7ab7979c99918cf4e931b631a44259c89c [2024-11-22 11:47:03,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:47:03,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:47:03,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:47:03,302 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:47:03,302 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:47:03,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-96.i [2024-11-22 11:47:04,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:47:04,841 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:47:04,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-96.i [2024-11-22 11:47:04,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c03d7764/ae6b761aadb540fd823107e6d6771ea2/FLAG64a1f0cf5 [2024-11-22 11:47:05,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c03d7764/ae6b761aadb540fd823107e6d6771ea2 [2024-11-22 11:47:05,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:47:05,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:47:05,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:47:05,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:47:05,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:47:05,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:05,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0dd4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05, skipping insertion in model container [2024-11-22 11:47:05,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:05,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:47:05,407 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-96.i[916,929] [2024-11-22 11:47:05,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:47:05,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:47:05,772 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-96.i[916,929] [2024-11-22 11:47:05,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:47:05,909 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:47:05,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05 WrapperNode [2024-11-22 11:47:05,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:47:05,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:47:05,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:47:05,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:47:05,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:05,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:05,993 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 442 [2024-11-22 11:47:05,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:47:05,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:47:05,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:47:05,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:47:06,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,057 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:47:06,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:47:06,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:47:06,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:47:06,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:47:06,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (1/1) ... [2024-11-22 11:47:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:47:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:06,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:47:06,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:47:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:47:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:47:06,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:47:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:47:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:47:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:47:06,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:47:06,289 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:47:06,883 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-22 11:47:06,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:47:06,906 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:47:06,906 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:47:06,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:47:06 BoogieIcfgContainer [2024-11-22 11:47:06,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:47:06,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:47:06,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:47:06,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:47:06,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:47:05" (1/3) ... [2024-11-22 11:47:06,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b24c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:47:06, skipping insertion in model container [2024-11-22 11:47:06,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:05" (2/3) ... [2024-11-22 11:47:06,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b24c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:47:06, skipping insertion in model container [2024-11-22 11:47:06,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:47:06" (3/3) ... [2024-11-22 11:47:06,916 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-96.i [2024-11-22 11:47:06,929 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:47:06,930 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:47:06,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:47:06,993 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;@69a1b233, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:47:06,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:47:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 138 states have (on average 1.5144927536231885) internal successors, (209), 139 states have internal predecessors, (209), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 11:47:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-22 11:47:07,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:07,020 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:07,021 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:07,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1060180314, now seen corresponding path program 1 times [2024-11-22 11:47:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983962371] [2024-11-22 11:47:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:07,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983962371] [2024-11-22 11:47:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983962371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:47:07,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536513628] [2024-11-22 11:47:07,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:07,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:47:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:07,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:47:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:07,824 INFO L87 Difference]: Start difference. First operand has 179 states, 138 states have (on average 1.5144927536231885) internal successors, (209), 139 states have internal predecessors, (209), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:07,939 INFO L93 Difference]: Finished difference Result 519 states and 912 transitions. [2024-11-22 11:47:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 273 [2024-11-22 11:47:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:07,953 INFO L225 Difference]: With dead ends: 519 [2024-11-22 11:47:07,954 INFO L226 Difference]: Without dead ends: 343 [2024-11-22 11:47:07,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:07,962 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 263 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:07,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 662 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-22 11:47:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 177. [2024-11-22 11:47:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.4744525547445255) internal successors, (202), 137 states have internal predecessors, (202), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 11:47:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 278 transitions. [2024-11-22 11:47:08,027 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 278 transitions. Word has length 273 [2024-11-22 11:47:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:08,031 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 278 transitions. [2024-11-22 11:47:08,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 278 transitions. [2024-11-22 11:47:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-22 11:47:08,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:08,038 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:08,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 11:47:08,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:08,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash 785186852, now seen corresponding path program 1 times [2024-11-22 11:47:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791086849] [2024-11-22 11:47:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:08,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791086849] [2024-11-22 11:47:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791086849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:08,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:08,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:47:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044783784] [2024-11-22 11:47:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:08,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:47:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:47:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:08,486 INFO L87 Difference]: Start difference. First operand 177 states and 278 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:08,588 INFO L93 Difference]: Finished difference Result 525 states and 828 transitions. [2024-11-22 11:47:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 273 [2024-11-22 11:47:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:08,593 INFO L225 Difference]: With dead ends: 525 [2024-11-22 11:47:08,595 INFO L226 Difference]: Without dead ends: 351 [2024-11-22 11:47:08,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:08,598 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 262 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:08,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 503 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:47:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-22 11:47:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2024-11-22 11:47:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 270 states have (on average 1.474074074074074) internal successors, (398), 270 states have internal predecessors, (398), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-22 11:47:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 550 transitions. [2024-11-22 11:47:08,646 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 550 transitions. Word has length 273 [2024-11-22 11:47:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:08,647 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 550 transitions. [2024-11-22 11:47:08,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 550 transitions. [2024-11-22 11:47:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-22 11:47:08,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:08,653 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:08,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:47:08,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:08,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:08,654 INFO L85 PathProgramCache]: Analyzing trace with hash -674720285, now seen corresponding path program 1 times [2024-11-22 11:47:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760880531] [2024-11-22 11:47:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760880531] [2024-11-22 11:47:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760880531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:47:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768560041] [2024-11-22 11:47:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:47:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:47:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:47:09,186 INFO L87 Difference]: Start difference. First operand 349 states and 550 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:09,318 INFO L93 Difference]: Finished difference Result 949 states and 1494 transitions. [2024-11-22 11:47:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:47:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 274 [2024-11-22 11:47:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:09,322 INFO L225 Difference]: With dead ends: 949 [2024-11-22 11:47:09,322 INFO L226 Difference]: Without dead ends: 603 [2024-11-22 11:47:09,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:47:09,324 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 194 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:09,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 816 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:47:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-22 11:47:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2024-11-22 11:47:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 490 states have (on average 1.4979591836734694) internal successors, (734), 492 states have internal predecessors, (734), 104 states have call successors, (104), 4 states have call predecessors, (104), 4 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 942 transitions. [2024-11-22 11:47:09,355 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 942 transitions. Word has length 274 [2024-11-22 11:47:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:09,356 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 942 transitions. [2024-11-22 11:47:09,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 942 transitions. [2024-11-22 11:47:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-22 11:47:09,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:09,358 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:09,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:47:09,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:09,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1027808667, now seen corresponding path program 1 times [2024-11-22 11:47:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:09,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192046162] [2024-11-22 11:47:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192046162] [2024-11-22 11:47:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192046162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:47:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552050328] [2024-11-22 11:47:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:47:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:47:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:09,720 INFO L87 Difference]: Start difference. First operand 599 states and 942 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:09,774 INFO L93 Difference]: Finished difference Result 1282 states and 2017 transitions. [2024-11-22 11:47:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 274 [2024-11-22 11:47:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:09,779 INFO L225 Difference]: With dead ends: 1282 [2024-11-22 11:47:09,779 INFO L226 Difference]: Without dead ends: 686 [2024-11-22 11:47:09,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:09,781 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 240 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:09,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 503 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-22 11:47:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 599. [2024-11-22 11:47:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 490 states have (on average 1.4816326530612245) internal successors, (726), 492 states have internal predecessors, (726), 104 states have call successors, (104), 4 states have call predecessors, (104), 4 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 934 transitions. [2024-11-22 11:47:09,817 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 934 transitions. Word has length 274 [2024-11-22 11:47:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:09,819 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 934 transitions. [2024-11-22 11:47:09,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 934 transitions. [2024-11-22 11:47:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-22 11:47:09,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:09,826 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:09,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:47:09,826 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:09,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -316464660, now seen corresponding path program 1 times [2024-11-22 11:47:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:09,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342916029] [2024-11-22 11:47:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342916029] [2024-11-22 11:47:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342916029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:10,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:10,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:47:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560173337] [2024-11-22 11:47:10,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:10,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:47:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:47:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:47:10,513 INFO L87 Difference]: Start difference. First operand 599 states and 934 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:10,993 INFO L93 Difference]: Finished difference Result 1681 states and 2608 transitions. [2024-11-22 11:47:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:47:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 275 [2024-11-22 11:47:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:11,002 INFO L225 Difference]: With dead ends: 1681 [2024-11-22 11:47:11,002 INFO L226 Difference]: Without dead ends: 1085 [2024-11-22 11:47:11,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:47:11,006 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 434 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:11,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 892 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:47:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2024-11-22 11:47:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 847. [2024-11-22 11:47:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 736 states have (on average 1.486413043478261) internal successors, (1094), 738 states have internal predecessors, (1094), 104 states have call successors, (104), 6 states have call predecessors, (104), 6 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1302 transitions. [2024-11-22 11:47:11,073 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1302 transitions. Word has length 275 [2024-11-22 11:47:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:11,074 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1302 transitions. [2024-11-22 11:47:11,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1302 transitions. [2024-11-22 11:47:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-22 11:47:11,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:11,077 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:11,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:47:11,077 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:11,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1577336040, now seen corresponding path program 1 times [2024-11-22 11:47:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861545838] [2024-11-22 11:47:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:11,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861545838] [2024-11-22 11:47:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861545838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564799254] [2024-11-22 11:47:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:11,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:11,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:47:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:12,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 11:47:12,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:12,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:47:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564799254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:12,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:47:12,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-22 11:47:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460670969] [2024-11-22 11:47:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:12,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:47:12,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:47:12,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:47:12,381 INFO L87 Difference]: Start difference. First operand 847 states and 1302 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:12,768 INFO L93 Difference]: Finished difference Result 2447 states and 3768 transitions. [2024-11-22 11:47:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:47:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 275 [2024-11-22 11:47:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:12,776 INFO L225 Difference]: With dead ends: 2447 [2024-11-22 11:47:12,776 INFO L226 Difference]: Without dead ends: 1603 [2024-11-22 11:47:12,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:47:12,779 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 230 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:12,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 856 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:47:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2024-11-22 11:47:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1283. [2024-11-22 11:47:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1172 states have (on average 1.5136518771331058) internal successors, (1774), 1174 states have internal predecessors, (1774), 104 states have call successors, (104), 6 states have call predecessors, (104), 6 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1982 transitions. [2024-11-22 11:47:12,864 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1982 transitions. Word has length 275 [2024-11-22 11:47:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:12,865 INFO L471 AbstractCegarLoop]: Abstraction has 1283 states and 1982 transitions. [2024-11-22 11:47:12,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1982 transitions. [2024-11-22 11:47:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 11:47:12,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:12,868 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:12,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 11:47:13,072 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,SelfDestructingSolverStorable5 [2024-11-22 11:47:13,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:13,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 605816804, now seen corresponding path program 1 times [2024-11-22 11:47:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513453262] [2024-11-22 11:47:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513453262] [2024-11-22 11:47:15,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513453262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461351692] [2024-11-22 11:47:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:15,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:15,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:15,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:47:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:15,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 11:47:15,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:15,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:47:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461351692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:15,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:47:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-22 11:47:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64965112] [2024-11-22 11:47:15,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:15,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:47:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:47:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:47:15,937 INFO L87 Difference]: Start difference. First operand 1283 states and 1982 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:16,507 INFO L93 Difference]: Finished difference Result 2891 states and 4452 transitions. [2024-11-22 11:47:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:47:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 276 [2024-11-22 11:47:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:16,514 INFO L225 Difference]: With dead ends: 2891 [2024-11-22 11:47:16,514 INFO L226 Difference]: Without dead ends: 1611 [2024-11-22 11:47:16,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:47:16,518 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 221 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:16,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1255 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:47:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2024-11-22 11:47:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1291. [2024-11-22 11:47:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1180 states have (on average 1.5169491525423728) internal successors, (1790), 1182 states have internal predecessors, (1790), 104 states have call successors, (104), 6 states have call predecessors, (104), 6 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1998 transitions. [2024-11-22 11:47:16,577 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1998 transitions. Word has length 276 [2024-11-22 11:47:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:16,577 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 1998 transitions. [2024-11-22 11:47:16,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1998 transitions. [2024-11-22 11:47:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 11:47:16,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:16,580 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:16,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:47:16,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 11:47:16,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:16,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1154981460, now seen corresponding path program 1 times [2024-11-22 11:47:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063915406] [2024-11-22 11:47:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063915406] [2024-11-22 11:47:17,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063915406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:17,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245474649] [2024-11-22 11:47:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:17,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:17,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:17,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:17,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:47:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:17,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:47:17,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-22 11:47:17,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:47:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245474649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:17,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:47:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 11 [2024-11-22 11:47:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507023216] [2024-11-22 11:47:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:17,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:47:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:47:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:47:17,667 INFO L87 Difference]: Start difference. First operand 1291 states and 1998 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-22 11:47:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:18,249 INFO L93 Difference]: Finished difference Result 2238 states and 3425 transitions. [2024-11-22 11:47:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 11:47:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 276 [2024-11-22 11:47:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:18,256 INFO L225 Difference]: With dead ends: 2238 [2024-11-22 11:47:18,256 INFO L226 Difference]: Without dead ends: 950 [2024-11-22 11:47:18,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:47:18,258 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 540 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:18,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1074 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:47:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-22 11:47:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 847. [2024-11-22 11:47:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 734 states have (on average 1.449591280653951) internal successors, (1064), 736 states have internal predecessors, (1064), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1272 transitions. [2024-11-22 11:47:18,312 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1272 transitions. Word has length 276 [2024-11-22 11:47:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:18,313 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1272 transitions. [2024-11-22 11:47:18,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-22 11:47:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1272 transitions. [2024-11-22 11:47:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-22 11:47:18,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:18,316 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:18,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 11:47:18,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:18,521 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:18,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash -742399731, now seen corresponding path program 1 times [2024-11-22 11:47:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128873829] [2024-11-22 11:47:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:19,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128873829] [2024-11-22 11:47:19,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128873829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:19,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532256216] [2024-11-22 11:47:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:19,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:19,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:19,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:47:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:19,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:47:19,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1166 proven. 156 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2024-11-22 11:47:20,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:20,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532256216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:20,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:20,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2024-11-22 11:47:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615089637] [2024-11-22 11:47:20,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:20,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 11:47:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:20,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 11:47:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-22 11:47:20,610 INFO L87 Difference]: Start difference. First operand 847 states and 1272 transitions. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (92), 3 states have call predecessors, (92), 5 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2024-11-22 11:47:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:21,296 INFO L93 Difference]: Finished difference Result 1828 states and 2715 transitions. [2024-11-22 11:47:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 11:47:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (92), 3 states have call predecessors, (92), 5 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) Word has length 277 [2024-11-22 11:47:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:21,303 INFO L225 Difference]: With dead ends: 1828 [2024-11-22 11:47:21,303 INFO L226 Difference]: Without dead ends: 984 [2024-11-22 11:47:21,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2024-11-22 11:47:21,305 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 1041 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:21,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 800 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:47:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-22 11:47:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 871. [2024-11-22 11:47:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 750 states have (on average 1.4346666666666668) internal successors, (1076), 752 states have internal predecessors, (1076), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-22 11:47:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1284 transitions. [2024-11-22 11:47:21,364 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1284 transitions. Word has length 277 [2024-11-22 11:47:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:21,364 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1284 transitions. [2024-11-22 11:47:21,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (92), 3 states have call predecessors, (92), 5 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2024-11-22 11:47:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1284 transitions. [2024-11-22 11:47:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-22 11:47:21,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:21,367 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:21,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:47:21,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:21,568 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:21,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 574765375, now seen corresponding path program 1 times [2024-11-22 11:47:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889663474] [2024-11-22 11:47:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:21,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:22,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:22,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889663474] [2024-11-22 11:47:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889663474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:22,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:47:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820595457] [2024-11-22 11:47:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:22,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:47:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:47:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:47:22,204 INFO L87 Difference]: Start difference. First operand 871 states and 1284 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:22,586 INFO L93 Difference]: Finished difference Result 2609 states and 3848 transitions. [2024-11-22 11:47:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:47:22,586 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 278 [2024-11-22 11:47:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:22,593 INFO L225 Difference]: With dead ends: 2609 [2024-11-22 11:47:22,593 INFO L226 Difference]: Without dead ends: 1741 [2024-11-22 11:47:22,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:47:22,596 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 359 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:22,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1161 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:47:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-22 11:47:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2024-11-22 11:47:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1496 states have (on average 1.4331550802139037) internal successors, (2144), 1500 states have internal predecessors, (2144), 208 states have call successors, (208), 32 states have call predecessors, (208), 32 states have return successors, (208), 204 states have call predecessors, (208), 208 states have call successors, (208) [2024-11-22 11:47:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2560 transitions. [2024-11-22 11:47:22,713 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2560 transitions. Word has length 278 [2024-11-22 11:47:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:22,713 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2560 transitions. [2024-11-22 11:47:22,714 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2560 transitions. [2024-11-22 11:47:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-22 11:47:22,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:22,718 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:22,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:47:22,718 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:22,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1468251713, now seen corresponding path program 1 times [2024-11-22 11:47:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938125224] [2024-11-22 11:47:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938125224] [2024-11-22 11:47:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938125224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:23,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:47:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739971839] [2024-11-22 11:47:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:23,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:47:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:47:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:47:23,865 INFO L87 Difference]: Start difference. First operand 1737 states and 2560 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:24,392 INFO L93 Difference]: Finished difference Result 5867 states and 8599 transitions. [2024-11-22 11:47:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:47:24,393 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 278 [2024-11-22 11:47:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:24,408 INFO L225 Difference]: With dead ends: 5867 [2024-11-22 11:47:24,408 INFO L226 Difference]: Without dead ends: 4133 [2024-11-22 11:47:24,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:47:24,414 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 457 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:24,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 693 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:47:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2024-11-22 11:47:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 2521. [2024-11-22 11:47:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2280 states have (on average 1.4701754385964911) internal successors, (3352), 2284 states have internal predecessors, (3352), 208 states have call successors, (208), 32 states have call predecessors, (208), 32 states have return successors, (208), 204 states have call predecessors, (208), 208 states have call successors, (208) [2024-11-22 11:47:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3768 transitions. [2024-11-22 11:47:24,613 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3768 transitions. Word has length 278 [2024-11-22 11:47:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:24,614 INFO L471 AbstractCegarLoop]: Abstraction has 2521 states and 3768 transitions. [2024-11-22 11:47:24,614 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3768 transitions. [2024-11-22 11:47:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-22 11:47:24,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:24,618 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:47:24,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:24,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1440512189, now seen corresponding path program 1 times [2024-11-22 11:47:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554928661] [2024-11-22 11:47:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 96 proven. 15 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554928661] [2024-11-22 11:47:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554928661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407311175] [2024-11-22 11:47:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:25,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:25,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:47:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:25,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:47:25,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-22 11:47:25,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:47:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407311175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:47:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-22 11:47:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909790613] [2024-11-22 11:47:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:25,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:47:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:47:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-22 11:47:25,885 INFO L87 Difference]: Start difference. First operand 2521 states and 3768 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:27,366 INFO L93 Difference]: Finished difference Result 8711 states and 12941 transitions. [2024-11-22 11:47:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 11:47:27,367 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 278 [2024-11-22 11:47:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:27,389 INFO L225 Difference]: With dead ends: 8711 [2024-11-22 11:47:27,389 INFO L226 Difference]: Without dead ends: 6193 [2024-11-22 11:47:27,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:47:27,393 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 1034 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:27,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 2136 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 11:47:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2024-11-22 11:47:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5171. [2024-11-22 11:47:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4810 states have (on average 1.4644490644490644) internal successors, (7044), 4816 states have internal predecessors, (7044), 312 states have call successors, (312), 48 states have call predecessors, (312), 48 states have return successors, (312), 306 states have call predecessors, (312), 312 states have call successors, (312) [2024-11-22 11:47:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 7668 transitions. [2024-11-22 11:47:27,664 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 7668 transitions. Word has length 278 [2024-11-22 11:47:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:27,665 INFO L471 AbstractCegarLoop]: Abstraction has 5171 states and 7668 transitions. [2024-11-22 11:47:27,665 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-22 11:47:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 7668 transitions. [2024-11-22 11:47:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-22 11:47:27,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:27,673 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:27,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:47:27,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 11:47:27,874 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:27,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1301975718, now seen corresponding path program 1 times [2024-11-22 11:47:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633558537] [2024-11-22 11:47:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 96 proven. 15 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-22 11:47:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633558537] [2024-11-22 11:47:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633558537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146213269] [2024-11-22 11:47:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:28,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:28,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:28,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:47:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:28,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 11:47:28,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 2113 proven. 240 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-22 11:47:46,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 249 proven. 75 refuted. 0 times theorem prover too weak. 2488 trivial. 0 not checked. [2024-11-22 11:47:47,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146213269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:47,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:47,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 16] total 37 [2024-11-22 11:47:47,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872960000] [2024-11-22 11:47:47,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:47,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 11:47:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 11:47:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1116, Unknown=2, NotChecked=0, Total=1332 [2024-11-22 11:47:47,825 INFO L87 Difference]: Start difference. First operand 5171 states and 7668 transitions. Second operand has 37 states, 36 states have (on average 6.888888888888889) internal successors, (248), 35 states have internal predecessors, (248), 11 states have call successors, (86), 6 states have call predecessors, (86), 12 states have return successors, (89), 11 states have call predecessors, (89), 11 states have call successors, (89) [2024-11-22 11:47:51,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:47:56,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:00,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:02,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:06,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:10,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:12,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:15,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:17,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:21,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:23,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:27,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:31,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 11:48:35,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]