./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.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-97.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 71088fcc9fbf7fdd414b5a09b7fb834bc17213c2f570683779dd1957ada6c960 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:47:03,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:47:04,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:47:04,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:47:04,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:47:04,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:47:04,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:47:04,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:47:04,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:47:04,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:47:04,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:47:04,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:47:04,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:47:04,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:47:04,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:47:04,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:47:04,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:47:04,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:47:04,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:47:04,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:47:04,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:47:04,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:47:04,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:47:04,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:47:04,096 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:47:04,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:47:04,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:47:04,097 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:47:04,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:47:04,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:47:04,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:47:04,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:47:04,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:47:04,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:47:04,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:47:04,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:47:04,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:47:04,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:47:04,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:47:04,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:47:04,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:47:04,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:47:04,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71088fcc9fbf7fdd414b5a09b7fb834bc17213c2f570683779dd1957ada6c960 [2024-11-22 11:47:04,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:47:04,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:47:04,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:47:04,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:47:04,351 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:47:04,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.i [2024-11-22 11:47:05,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:47:06,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:47:06,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.i [2024-11-22 11:47:06,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646e6e301/800d5774211647ffbf59082e74a3a6cb/FLAG59888c0ce [2024-11-22 11:47:06,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646e6e301/800d5774211647ffbf59082e74a3a6cb [2024-11-22 11:47:06,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:47:06,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:47:06,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:47:06,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:47:06,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:47:06,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76332dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06, skipping insertion in model container [2024-11-22 11:47:06,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:47:06,292 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-97.i[916,929] [2024-11-22 11:47:06,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:47:06,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:47:06,551 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-97.i[916,929] [2024-11-22 11:47:06,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:47:06,640 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:47:06,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06 WrapperNode [2024-11-22 11:47:06,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:47:06,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:47:06,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:47:06,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:47:06,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,727 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 470 [2024-11-22 11:47:06,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:47:06,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:47:06,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:47:06,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:47:06,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,798 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 11:47:06,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:47:06,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:47:06,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:47:06,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:47:06,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (1/1) ... [2024-11-22 11:47:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:47:06,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:06,885 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 11:47:06,889 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 11:47:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:47:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:47:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:47:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:47:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:47:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:47:07,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:47:07,054 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:47:07,941 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-22 11:47:07,944 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:47:07,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:47:07,965 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:47:07,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:47:07 BoogieIcfgContainer [2024-11-22 11:47:07,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:47:07,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:47:07,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:47:07,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:47:07,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:47:06" (1/3) ... [2024-11-22 11:47:07,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ecc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:47:07, skipping insertion in model container [2024-11-22 11:47:07,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:47:06" (2/3) ... [2024-11-22 11:47:07,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ecc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:47:07, skipping insertion in model container [2024-11-22 11:47:07,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:47:07" (3/3) ... [2024-11-22 11:47:07,975 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-97.i [2024-11-22 11:47:07,992 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:47:07,993 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:47:08,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:47:08,083 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;@26f76fb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:47:08,084 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:47:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:47:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-22 11:47:08,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:08,115 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:08,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:08,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1649428131, now seen corresponding path program 1 times [2024-11-22 11:47:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371474796] [2024-11-22 11:47:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-22 11:47:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371474796] [2024-11-22 11:47:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371474796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20008163] [2024-11-22 11:47:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:08,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:08,686 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 11:47:08,689 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 11:47:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:08,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:47:08,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-22 11:47:09,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:47:09,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20008163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:09,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:47:09,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:47:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395246547] [2024-11-22 11:47:09,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:09,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:47:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:47:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:47:09,078 INFO L87 Difference]: Start difference. First operand has 189 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:47:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:09,130 INFO L93 Difference]: Finished difference Result 371 states and 645 transitions. [2024-11-22 11:47:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:47:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 289 [2024-11-22 11:47:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:09,140 INFO L225 Difference]: With dead ends: 371 [2024-11-22 11:47:09,141 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 11:47:09,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:47:09,148 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:09,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 11:47:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-22 11:47:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 140 states have (on average 1.5071428571428571) internal successors, (211), 140 states have internal predecessors, (211), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 11:47:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 297 transitions. [2024-11-22 11:47:09,212 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 297 transitions. Word has length 289 [2024-11-22 11:47:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:09,212 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 297 transitions. [2024-11-22 11:47:09,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 11:47:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 297 transitions. [2024-11-22 11:47:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-22 11:47:09,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:09,219 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:09,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:47:09,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:47:09,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:09,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1437054495, now seen corresponding path program 1 times [2024-11-22 11:47:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:09,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580423426] [2024-11-22 11:47:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:09,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:10,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580423426] [2024-11-22 11:47:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580423426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:10,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:10,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:47:10,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458318144] [2024-11-22 11:47:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:10,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:47:10,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:47:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:47:10,234 INFO L87 Difference]: Start difference. First operand 185 states and 297 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:10,559 INFO L93 Difference]: Finished difference Result 552 states and 889 transitions. [2024-11-22 11:47:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:47:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 289 [2024-11-22 11:47:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:10,568 INFO L225 Difference]: With dead ends: 552 [2024-11-22 11:47:10,570 INFO L226 Difference]: Without dead ends: 370 [2024-11-22 11:47:10,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:47:10,574 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 308 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:10,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1441 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:47:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-22 11:47:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 285. [2024-11-22 11:47:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 196 states have internal predecessors, (289), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-22 11:47:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 461 transitions. [2024-11-22 11:47:10,625 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 461 transitions. Word has length 289 [2024-11-22 11:47:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:10,626 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 461 transitions. [2024-11-22 11:47:10,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 461 transitions. [2024-11-22 11:47:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-22 11:47:10,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:10,631 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:10,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:47:10,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:10,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash 909538279, now seen corresponding path program 1 times [2024-11-22 11:47:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792456552] [2024-11-22 11:47:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:10,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792456552] [2024-11-22 11:47:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792456552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:11,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:11,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:47:11,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971610537] [2024-11-22 11:47:11,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:11,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:47:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:47:11,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:11,221 INFO L87 Difference]: Start difference. First operand 285 states and 461 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:11,261 INFO L93 Difference]: Finished difference Result 467 states and 755 transitions. [2024-11-22 11:47:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:11,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-22 11:47:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:11,268 INFO L225 Difference]: With dead ends: 467 [2024-11-22 11:47:11,268 INFO L226 Difference]: Without dead ends: 285 [2024-11-22 11:47:11,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:11,271 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 210 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:11,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-22 11:47:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-22 11:47:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 196 states have (on average 1.469387755102041) internal successors, (288), 196 states have internal predecessors, (288), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-22 11:47:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2024-11-22 11:47:11,318 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 290 [2024-11-22 11:47:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2024-11-22 11:47:11,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2024-11-22 11:47:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-22 11:47:11,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:11,327 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:11,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:47:11,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:11,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash 837151721, now seen corresponding path program 1 times [2024-11-22 11:47:11,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:11,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998532600] [2024-11-22 11:47:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:11,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:13,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998532600] [2024-11-22 11:47:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998532600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:13,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:47:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442807026] [2024-11-22 11:47:13,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:13,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:47:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:47:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:47:13,497 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:14,706 INFO L93 Difference]: Finished difference Result 776 states and 1237 transitions. [2024-11-22 11:47:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 11:47:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-22 11:47:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:14,711 INFO L225 Difference]: With dead ends: 776 [2024-11-22 11:47:14,712 INFO L226 Difference]: Without dead ends: 594 [2024-11-22 11:47:14,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:47:14,713 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 823 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:14,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1579 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 11:47:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-22 11:47:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 315. [2024-11-22 11:47:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 226 states have (on average 1.491150442477876) internal successors, (337), 226 states have internal predecessors, (337), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-22 11:47:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 509 transitions. [2024-11-22 11:47:14,772 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 509 transitions. Word has length 290 [2024-11-22 11:47:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:14,773 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 509 transitions. [2024-11-22 11:47:14,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 509 transitions. [2024-11-22 11:47:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-22 11:47:14,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:14,777 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:14,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:47:14,778 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:14,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:14,778 INFO L85 PathProgramCache]: Analyzing trace with hash 896542135, now seen corresponding path program 1 times [2024-11-22 11:47:14,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:14,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13576773] [2024-11-22 11:47:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13576773] [2024-11-22 11:47:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13576773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:47:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184080515] [2024-11-22 11:47:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:15,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:47:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:47:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:47:15,150 INFO L87 Difference]: Start difference. First operand 315 states and 509 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:15,218 INFO L93 Difference]: Finished difference Result 700 states and 1126 transitions. [2024-11-22 11:47:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:47:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-22 11:47:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:15,223 INFO L225 Difference]: With dead ends: 700 [2024-11-22 11:47:15,223 INFO L226 Difference]: Without dead ends: 518 [2024-11-22 11:47:15,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:47:15,225 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 201 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:15,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 856 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-22 11:47:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 515. [2024-11-22 11:47:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 382 states have (on average 1.4921465968586387) internal successors, (570), 382 states have internal predecessors, (570), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 828 transitions. [2024-11-22 11:47:15,282 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 828 transitions. Word has length 290 [2024-11-22 11:47:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:15,283 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 828 transitions. [2024-11-22 11:47:15,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 828 transitions. [2024-11-22 11:47:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-22 11:47:15,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:15,288 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:15,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:47:15,288 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:15,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1739325888, now seen corresponding path program 1 times [2024-11-22 11:47:15,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:15,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864553572] [2024-11-22 11:47:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:15,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864553572] [2024-11-22 11:47:16,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864553572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:16,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:16,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:47:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89816714] [2024-11-22 11:47:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:16,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:47:16,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:47:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:47:16,818 INFO L87 Difference]: Start difference. First operand 515 states and 828 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:17,749 INFO L93 Difference]: Finished difference Result 1438 states and 2293 transitions. [2024-11-22 11:47:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:47:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-22 11:47:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:17,757 INFO L225 Difference]: With dead ends: 1438 [2024-11-22 11:47:17,757 INFO L226 Difference]: Without dead ends: 1078 [2024-11-22 11:47:17,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:47:17,762 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 814 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:17,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2005 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:47:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2024-11-22 11:47:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 523. [2024-11-22 11:47:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 390 states have (on average 1.4923076923076923) internal successors, (582), 390 states have internal predecessors, (582), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 840 transitions. [2024-11-22 11:47:17,823 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 840 transitions. Word has length 290 [2024-11-22 11:47:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:17,824 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 840 transitions. [2024-11-22 11:47:17,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 840 transitions. [2024-11-22 11:47:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-22 11:47:17,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:17,829 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:17,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:47:17,829 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:17,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2105844949, now seen corresponding path program 1 times [2024-11-22 11:47:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:17,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961220294] [2024-11-22 11:47:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:18,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961220294] [2024-11-22 11:47:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961220294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:47:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29347567] [2024-11-22 11:47:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:47:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:47:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:47:18,208 INFO L87 Difference]: Start difference. First operand 523 states and 840 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:18,395 INFO L93 Difference]: Finished difference Result 922 states and 1478 transitions. [2024-11-22 11:47:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 291 [2024-11-22 11:47:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:18,400 INFO L225 Difference]: With dead ends: 922 [2024-11-22 11:47:18,400 INFO L226 Difference]: Without dead ends: 517 [2024-11-22 11:47:18,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:47:18,402 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:18,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 276 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:47:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-22 11:47:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 509. [2024-11-22 11:47:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 376 states have (on average 1.4574468085106382) internal successors, (548), 376 states have internal predecessors, (548), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 806 transitions. [2024-11-22 11:47:18,467 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 806 transitions. Word has length 291 [2024-11-22 11:47:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:18,468 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 806 transitions. [2024-11-22 11:47:18,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 806 transitions. [2024-11-22 11:47:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-22 11:47:18,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:18,472 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:18,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:47:18,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:18,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash 725976113, now seen corresponding path program 1 times [2024-11-22 11:47:18,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:18,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083716783] [2024-11-22 11:47:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:47:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083716783] [2024-11-22 11:47:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083716783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368256277] [2024-11-22 11:47:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:19,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:19,406 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 11:47:19,407 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 11:47:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:47:19,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1342 proven. 96 refuted. 0 times theorem prover too weak. 2174 trivial. 0 not checked. [2024-11-22 11:47:20,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 30 proven. 96 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:47:20,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368256277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:20,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:20,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-22 11:47:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071493621] [2024-11-22 11:47:20,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:20,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:47:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:47:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:47:20,490 INFO L87 Difference]: Start difference. First operand 509 states and 806 transitions. Second operand has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-22 11:47:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:21,587 INFO L93 Difference]: Finished difference Result 1066 states and 1665 transitions. [2024-11-22 11:47:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 11:47:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) Word has length 291 [2024-11-22 11:47:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:21,593 INFO L225 Difference]: With dead ends: 1066 [2024-11-22 11:47:21,593 INFO L226 Difference]: Without dead ends: 642 [2024-11-22 11:47:21,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2024-11-22 11:47:21,596 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 788 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:21,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1184 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:47:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-22 11:47:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 469. [2024-11-22 11:47:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 332 states have (on average 1.4156626506024097) internal successors, (470), 332 states have internal predecessors, (470), 129 states have call successors, (129), 7 states have call predecessors, (129), 7 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 728 transitions. [2024-11-22 11:47:21,649 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 728 transitions. Word has length 291 [2024-11-22 11:47:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:21,651 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 728 transitions. [2024-11-22 11:47:21,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-22 11:47:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 728 transitions. [2024-11-22 11:47:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-22 11:47:21,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:21,656 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:21,667 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 11:47:21,857 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,SelfDestructingSolverStorable7 [2024-11-22 11:47:21,858 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:21,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1968400452, now seen corresponding path program 1 times [2024-11-22 11:47:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312577039] [2024-11-22 11:47:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:47:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312577039] [2024-11-22 11:47:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312577039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903402707] [2024-11-22 11:47:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:22,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:22,445 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 11:47:22,447 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 11:47:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:22,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:47:22,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1846 proven. 60 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2024-11-22 11:47:22,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:47:23,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903402707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:23,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 11:47:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910834878] [2024-11-22 11:47:23,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:23,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:47:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:47:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:47:23,160 INFO L87 Difference]: Start difference. First operand 469 states and 728 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-22 11:47:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:23,467 INFO L93 Difference]: Finished difference Result 856 states and 1316 transitions. [2024-11-22 11:47:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:47:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 291 [2024-11-22 11:47:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:23,472 INFO L225 Difference]: With dead ends: 856 [2024-11-22 11:47:23,472 INFO L226 Difference]: Without dead ends: 475 [2024-11-22 11:47:23,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:47:23,473 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 199 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:23,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 590 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:47:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-22 11:47:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 469. [2024-11-22 11:47:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 329 states have (on average 1.3708206686930091) internal successors, (451), 329 states have internal predecessors, (451), 129 states have call successors, (129), 10 states have call predecessors, (129), 10 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 709 transitions. [2024-11-22 11:47:23,525 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 709 transitions. Word has length 291 [2024-11-22 11:47:23,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:23,528 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 709 transitions. [2024-11-22 11:47:23,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-22 11:47:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 709 transitions. [2024-11-22 11:47:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-22 11:47:23,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:23,532 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:23,543 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 11:47:23,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:23,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:23,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash 617984224, now seen corresponding path program 1 times [2024-11-22 11:47:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:23,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13103761] [2024-11-22 11:47:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-22 11:47:24,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:24,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13103761] [2024-11-22 11:47:24,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13103761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:24,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:24,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:47:24,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434346070] [2024-11-22 11:47:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:24,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:47:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:47:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:47:24,018 INFO L87 Difference]: Start difference. First operand 469 states and 709 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:24,073 INFO L93 Difference]: Finished difference Result 849 states and 1290 transitions. [2024-11-22 11:47:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:47:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 292 [2024-11-22 11:47:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:24,077 INFO L225 Difference]: With dead ends: 849 [2024-11-22 11:47:24,078 INFO L226 Difference]: Without dead ends: 472 [2024-11-22 11:47:24,079 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 11:47:24,079 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:24,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:47:24,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-22 11:47:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-11-22 11:47:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 332 states have (on average 1.3674698795180722) internal successors, (454), 332 states have internal predecessors, (454), 129 states have call successors, (129), 10 states have call predecessors, (129), 10 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:47:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 712 transitions. [2024-11-22 11:47:24,129 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 712 transitions. Word has length 292 [2024-11-22 11:47:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:24,130 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 712 transitions. [2024-11-22 11:47:24,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-22 11:47:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 712 transitions. [2024-11-22 11:47:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-22 11:47:24,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:24,134 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:24,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:47:24,134 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:24,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:24,135 INFO L85 PathProgramCache]: Analyzing trace with hash 264895842, now seen corresponding path program 1 times [2024-11-22 11:47:24,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:24,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368791022] [2024-11-22 11:47:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:24,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 33 proven. 93 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:47:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368791022] [2024-11-22 11:47:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368791022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63522863] [2024-11-22 11:47:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:25,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:25,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:25,188 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 11:47:25,189 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 11:47:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:25,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 11:47:25,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 548 proven. 237 refuted. 0 times theorem prover too weak. 2827 trivial. 0 not checked. [2024-11-22 11:47:26,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 9 proven. 240 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2024-11-22 11:47:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63522863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:27,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:27,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-22 11:47:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126813430] [2024-11-22 11:47:27,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:27,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 11:47:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 11:47:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-22 11:47:27,251 INFO L87 Difference]: Start difference. First operand 472 states and 712 transitions. Second operand has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) [2024-11-22 11:47:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:28,656 INFO L93 Difference]: Finished difference Result 1285 states and 1895 transitions. [2024-11-22 11:47:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 11:47:28,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) Word has length 292 [2024-11-22 11:47:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:28,665 INFO L225 Difference]: With dead ends: 1285 [2024-11-22 11:47:28,665 INFO L226 Difference]: Without dead ends: 905 [2024-11-22 11:47:28,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=460, Invalid=1262, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 11:47:28,667 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 729 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:28,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1471 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 11:47:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-22 11:47:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 879. [2024-11-22 11:47:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 632 states have (on average 1.3306962025316456) internal successors, (841), 632 states have internal predecessors, (841), 215 states have call successors, (215), 31 states have call predecessors, (215), 31 states have return successors, (215), 215 states have call predecessors, (215), 215 states have call successors, (215) [2024-11-22 11:47:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1271 transitions. [2024-11-22 11:47:28,756 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1271 transitions. Word has length 292 [2024-11-22 11:47:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:28,756 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1271 transitions. [2024-11-22 11:47:28,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) [2024-11-22 11:47:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1271 transitions. [2024-11-22 11:47:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-22 11:47:28,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:28,760 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:28,770 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 11:47:28,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:28,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:28,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1974811117, now seen corresponding path program 1 times [2024-11-22 11:47:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099575728] [2024-11-22 11:47:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:28,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 120 proven. 240 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2024-11-22 11:47:30,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:30,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099575728] [2024-11-22 11:47:30,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099575728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:30,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346822216] [2024-11-22 11:47:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:30,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:30,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:30,906 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 11:47:30,908 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 11:47:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:31,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 11:47:31,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2285 proven. 87 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-11-22 11:47:32,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 273 proven. 96 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2024-11-22 11:47:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346822216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:33,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:33,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 38 [2024-11-22 11:47:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613135362] [2024-11-22 11:47:33,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:33,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 11:47:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 11:47:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 11:47:33,175 INFO L87 Difference]: Start difference. First operand 879 states and 1271 transitions. Second operand has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) [2024-11-22 11:47:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:45,874 INFO L93 Difference]: Finished difference Result 7693 states and 10916 transitions. [2024-11-22 11:47:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-22 11:47:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) Word has length 293 [2024-11-22 11:47:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:45,909 INFO L225 Difference]: With dead ends: 7693 [2024-11-22 11:47:45,910 INFO L226 Difference]: Without dead ends: 6935 [2024-11-22 11:47:45,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15726 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5715, Invalid=33291, Unknown=0, NotChecked=0, Total=39006 [2024-11-22 11:47:45,925 INFO L432 NwaCegarLoop]: 618 mSDtfsCounter, 9789 mSDsluCounter, 6698 mSDsCounter, 0 mSdLazyCounter, 6951 mSolverCounterSat, 2502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9831 SdHoareTripleChecker+Valid, 7316 SdHoareTripleChecker+Invalid, 9453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2502 IncrementalHoareTripleChecker+Valid, 6951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:45,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9831 Valid, 7316 Invalid, 9453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2502 Valid, 6951 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-22 11:47:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2024-11-22 11:47:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 4340. [2024-11-22 11:47:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 3378 states have (on average 1.3368857312018947) internal successors, (4516), 3390 states have internal predecessors, (4516), 759 states have call successors, (759), 202 states have call predecessors, (759), 202 states have return successors, (759), 747 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-22 11:47:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 6034 transitions. [2024-11-22 11:47:46,441 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 6034 transitions. Word has length 293 [2024-11-22 11:47:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:46,442 INFO L471 AbstractCegarLoop]: Abstraction has 4340 states and 6034 transitions. [2024-11-22 11:47:46,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) [2024-11-22 11:47:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 6034 transitions. [2024-11-22 11:47:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-22 11:47:46,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:46,445 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:46,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 11:47:46,646 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 11:47:46,646 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:46,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1680531983, now seen corresponding path program 1 times [2024-11-22 11:47:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050824390] [2024-11-22 11:47:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 114 proven. 246 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2024-11-22 11:47:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050824390] [2024-11-22 11:47:48,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050824390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:47:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524088442] [2024-11-22 11:47:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:48,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:48,994 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 11:47:48,996 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 11:47:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:49,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-22 11:47:49,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:47:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2429 proven. 505 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-22 11:47:52,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:47:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 321 proven. 498 refuted. 0 times theorem prover too weak. 2793 trivial. 0 not checked. [2024-11-22 11:47:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524088442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:47:55,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:47:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 26] total 62 [2024-11-22 11:47:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647978409] [2024-11-22 11:47:55,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:47:55,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-22 11:47:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-22 11:47:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=2688, Unknown=0, NotChecked=0, Total=3782 [2024-11-22 11:47:55,070 INFO L87 Difference]: Start difference. First operand 4340 states and 6034 transitions. Second operand has 62 states, 58 states have (on average 4.344827586206897) internal successors, (252), 54 states have internal predecessors, (252), 18 states have call successors, (111), 9 states have call predecessors, (111), 21 states have return successors, (112), 18 states have call predecessors, (112), 18 states have call successors, (112)