./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-90.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-90.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 aed545729ad989c8c40e84d3e267f99bbd3da53e52f3c825ab93de12dff6c66d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:48:49,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:48:49,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:48:49,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:48:49,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:48:49,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:48:49,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:48:49,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:48:49,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:48:49,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:48:49,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:48:49,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:48:49,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:48:49,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:48:49,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:48:49,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:48:49,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:48:49,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:48:49,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:48:49,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:48:49,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:48:49,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:48:49,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:48:49,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:48:49,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:48:49,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:48:49,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:48:49,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:48:49,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:48:49,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:48:49,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:48:49,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:48:49,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:48:49,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:48:49,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:48:49,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:48:49,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:48:49,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aed545729ad989c8c40e84d3e267f99bbd3da53e52f3c825ab93de12dff6c66d [2024-11-18 23:48:49,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:48:49,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:48:49,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:48:49,833 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:48:49,833 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:48:49,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-90.i [2024-11-18 23:48:51,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:48:51,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:48:51,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-90.i [2024-11-18 23:48:51,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7337b05e3/5c3b431355f74f6d930349823311d681/FLAG2ecb7e6e4 [2024-11-18 23:48:51,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7337b05e3/5c3b431355f74f6d930349823311d681 [2024-11-18 23:48:51,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:48:51,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:48:51,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:48:51,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:48:51,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:48:51,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:51,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d0334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51, skipping insertion in model container [2024-11-18 23:48:51,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:51,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:48:51,655 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-90.i[916,929] [2024-11-18 23:48:51,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:48:51,822 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:48:51,830 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-90.i[916,929] [2024-11-18 23:48:51,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:48:51,914 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:48:51,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51 WrapperNode [2024-11-18 23:48:51,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:48:51,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:48:51,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:48:51,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:48:51,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:51,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:51,988 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 400 [2024-11-18 23:48:51,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:48:51,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:48:51,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:48:51,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:48:52,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,051 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:48:52,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:48:52,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:48:52,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:48:52,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:48:52,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (1/1) ... [2024-11-18 23:48:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:48:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:52,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:48:52,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:48:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:48:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:48:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:48:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:48:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:48:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:48:52,259 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:48:52,262 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:48:52,812 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-18 23:48:52,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:48:52,828 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:48:52,828 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:48:52,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:48:52 BoogieIcfgContainer [2024-11-18 23:48:52,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:48:52,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:48:52,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:48:52,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:48:52,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:48:51" (1/3) ... [2024-11-18 23:48:52,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ed572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:48:52, skipping insertion in model container [2024-11-18 23:48:52,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:51" (2/3) ... [2024-11-18 23:48:52,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ed572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:48:52, skipping insertion in model container [2024-11-18 23:48:52,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:48:52" (3/3) ... [2024-11-18 23:48:52,836 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-90.i [2024-11-18 23:48:52,848 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:48:52,849 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:48:52,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:48:52,915 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;@3de506e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:48:52,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:48:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 103 states have (on average 1.4368932038834952) internal successors, (148), 104 states have internal predecessors, (148), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-18 23:48:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 23:48:52,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:52,938 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:52,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:52,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1420299888, now seen corresponding path program 1 times [2024-11-18 23:48:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:52,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802680096] [2024-11-18 23:48:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2024-11-18 23:48:53,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802680096] [2024-11-18 23:48:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802680096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045325321] [2024-11-18 23:48:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:53,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:53,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:53,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:48:53,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:48:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:53,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:48:53,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2024-11-18 23:48:53,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:48:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045325321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:48:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:48:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788872870] [2024-11-18 23:48:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:53,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:48:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:48:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:48:53,812 INFO L87 Difference]: Start difference. First operand has 161 states, 103 states have (on average 1.4368932038834952) internal successors, (148), 104 states have internal predecessors, (148), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:48:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:53,857 INFO L93 Difference]: Finished difference Result 315 states and 565 transitions. [2024-11-18 23:48:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:48:53,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 351 [2024-11-18 23:48:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:53,868 INFO L225 Difference]: With dead ends: 315 [2024-11-18 23:48:53,869 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 23:48:53,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:48:53,878 INFO L432 NwaCegarLoop]: 251 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, 251 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:53,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:48:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 23:48:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-18 23:48:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 100 states have (on average 1.41) internal successors, (141), 100 states have internal predecessors, (141), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-18 23:48:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 251 transitions. [2024-11-18 23:48:53,935 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 251 transitions. Word has length 351 [2024-11-18 23:48:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:53,936 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 251 transitions. [2024-11-18 23:48:53,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-18 23:48:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 251 transitions. [2024-11-18 23:48:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 23:48:53,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:53,950 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:53,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:48:54,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:48:54,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:54,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1024148654, now seen corresponding path program 1 times [2024-11-18 23:48:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:54,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467746825] [2024-11-18 23:48:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:48:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467746825] [2024-11-18 23:48:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467746825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788307825] [2024-11-18 23:48:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:54,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:54,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:54,844 INFO L87 Difference]: Start difference. First operand 157 states and 251 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:55,140 INFO L93 Difference]: Finished difference Result 466 states and 748 transitions. [2024-11-18 23:48:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:55,141 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 351 [2024-11-18 23:48:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:55,148 INFO L225 Difference]: With dead ends: 466 [2024-11-18 23:48:55,148 INFO L226 Difference]: Without dead ends: 312 [2024-11-18 23:48:55,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:48:55,153 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 153 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:55,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 711 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:48:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-18 23:48:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 303. [2024-11-18 23:48:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 190 states have (on average 1.4157894736842105) internal successors, (269), 190 states have internal predecessors, (269), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-18 23:48:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 489 transitions. [2024-11-18 23:48:55,206 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 489 transitions. Word has length 351 [2024-11-18 23:48:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:55,209 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 489 transitions. [2024-11-18 23:48:55,209 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 489 transitions. [2024-11-18 23:48:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 23:48:55,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:55,213 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:55,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:48:55,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:55,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 203045010, now seen corresponding path program 1 times [2024-11-18 23:48:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:55,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105927337] [2024-11-18 23:48:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:55,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:48:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105927337] [2024-11-18 23:48:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105927337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:55,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791033247] [2024-11-18 23:48:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:55,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:55,624 INFO L87 Difference]: Start difference. First operand 303 states and 489 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:55,697 INFO L93 Difference]: Finished difference Result 648 states and 1048 transitions. [2024-11-18 23:48:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:55,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 352 [2024-11-18 23:48:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:55,702 INFO L225 Difference]: With dead ends: 648 [2024-11-18 23:48:55,702 INFO L226 Difference]: Without dead ends: 477 [2024-11-18 23:48:55,703 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 [2024-11-18 23:48:55,704 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 134 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:55,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 798 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:48:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-18 23:48:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 475. [2024-11-18 23:48:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 306 states have (on average 1.4313725490196079) internal successors, (438), 306 states have internal predecessors, (438), 165 states have call successors, (165), 3 states have call predecessors, (165), 3 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-18 23:48:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 768 transitions. [2024-11-18 23:48:55,745 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 768 transitions. Word has length 352 [2024-11-18 23:48:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:55,746 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 768 transitions. [2024-11-18 23:48:55,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 768 transitions. [2024-11-18 23:48:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 23:48:55,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:55,749 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:55,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:48:55,749 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:55,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2097777580, now seen corresponding path program 1 times [2024-11-18 23:48:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:55,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264689665] [2024-11-18 23:48:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:48:56,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:56,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264689665] [2024-11-18 23:48:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264689665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:56,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032549999] [2024-11-18 23:48:56,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:56,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:56,409 INFO L87 Difference]: Start difference. First operand 475 states and 768 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:56,672 INFO L93 Difference]: Finished difference Result 1491 states and 2416 transitions. [2024-11-18 23:48:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 352 [2024-11-18 23:48:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:56,682 INFO L225 Difference]: With dead ends: 1491 [2024-11-18 23:48:56,682 INFO L226 Difference]: Without dead ends: 1121 [2024-11-18 23:48:56,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:56,684 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 396 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:56,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 824 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:48:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2024-11-18 23:48:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 832. [2024-11-18 23:48:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 584 states have (on average 1.4880136986301369) internal successors, (869), 586 states have internal predecessors, (869), 241 states have call successors, (241), 6 states have call predecessors, (241), 6 states have return successors, (241), 239 states have call predecessors, (241), 241 states have call successors, (241) [2024-11-18 23:48:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1351 transitions. [2024-11-18 23:48:56,756 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1351 transitions. Word has length 352 [2024-11-18 23:48:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:56,757 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1351 transitions. [2024-11-18 23:48:56,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:48:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1351 transitions. [2024-11-18 23:48:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 23:48:56,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:56,759 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:56,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:48:56,760 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:56,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1167830418, now seen corresponding path program 1 times [2024-11-18 23:48:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:56,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295112208] [2024-11-18 23:48:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 99 proven. 63 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:48:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295112208] [2024-11-18 23:48:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295112208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385830585] [2024-11-18 23:48:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:58,129 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) [2024-11-18 23:48:58,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:48:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:58,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:48:58,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2562 proven. 48 refuted. 0 times theorem prover too weak. 3330 trivial. 0 not checked. [2024-11-18 23:48:58,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:48:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385830585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:48:58,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:48:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 23:48:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357604461] [2024-11-18 23:48:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:48:58,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:48:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:48:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:48:58,843 INFO L87 Difference]: Start difference. First operand 832 states and 1351 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2024-11-18 23:48:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:59,328 INFO L93 Difference]: Finished difference Result 1574 states and 2530 transitions. [2024-11-18 23:48:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:48:59,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 352 [2024-11-18 23:48:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:59,337 INFO L225 Difference]: With dead ends: 1574 [2024-11-18 23:48:59,337 INFO L226 Difference]: Without dead ends: 870 [2024-11-18 23:48:59,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 701 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:48:59,340 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 359 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:59,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 430 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:48:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-18 23:48:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 831. [2024-11-18 23:48:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 575 states have (on average 1.422608695652174) internal successors, (818), 577 states have internal predecessors, (818), 241 states have call successors, (241), 14 states have call predecessors, (241), 14 states have return successors, (241), 239 states have call predecessors, (241), 241 states have call successors, (241) [2024-11-18 23:48:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1300 transitions. [2024-11-18 23:48:59,425 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1300 transitions. Word has length 352 [2024-11-18 23:48:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:59,425 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1300 transitions. [2024-11-18 23:48:59,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2024-11-18 23:48:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1300 transitions. [2024-11-18 23:48:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:48:59,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:59,431 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:59,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:48:59,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:59,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:59,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2024691220, now seen corresponding path program 1 times [2024-11-18 23:48:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88878610] [2024-11-18 23:48:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-11-18 23:49:00,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:00,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88878610] [2024-11-18 23:49:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88878610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:00,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:49:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400572005] [2024-11-18 23:49:00,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:00,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:49:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:49:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:49:00,166 INFO L87 Difference]: Start difference. First operand 831 states and 1300 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:49:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:00,447 INFO L93 Difference]: Finished difference Result 1557 states and 2430 transitions. [2024-11-18 23:49:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:49:00,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 354 [2024-11-18 23:49:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:00,452 INFO L225 Difference]: With dead ends: 1557 [2024-11-18 23:49:00,453 INFO L226 Difference]: Without dead ends: 861 [2024-11-18 23:49:00,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:00,456 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 140 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:00,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 699 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-18 23:49:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 831. [2024-11-18 23:49:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 575 states have (on average 1.4191304347826086) internal successors, (816), 577 states have internal predecessors, (816), 241 states have call successors, (241), 14 states have call predecessors, (241), 14 states have return successors, (241), 239 states have call predecessors, (241), 241 states have call successors, (241) [2024-11-18 23:49:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1298 transitions. [2024-11-18 23:49:00,552 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1298 transitions. Word has length 354 [2024-11-18 23:49:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:00,553 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1298 transitions. [2024-11-18 23:49:00,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2024-11-18 23:49:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1298 transitions. [2024-11-18 23:49:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:49:00,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:00,556 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:00,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:49:00,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:00,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1441310944, now seen corresponding path program 1 times [2024-11-18 23:49:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949272188] [2024-11-18 23:49:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 303 proven. 15 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2024-11-18 23:49:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949272188] [2024-11-18 23:49:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949272188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694683948] [2024-11-18 23:49:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:02,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:02,475 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) [2024-11-18 23:49:02,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:49:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:02,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 23:49:02,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1343 proven. 21 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2024-11-18 23:49:03,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 309 proven. 12 refuted. 0 times theorem prover too weak. 5619 trivial. 0 not checked. [2024-11-18 23:49:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694683948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:03,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 21 [2024-11-18 23:49:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395552516] [2024-11-18 23:49:03,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:03,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:49:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:49:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:49:03,656 INFO L87 Difference]: Start difference. First operand 831 states and 1298 transitions. Second operand has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 4 states have call successors, (67), 3 states have call predecessors, (67), 8 states have return successors, (68), 7 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-18 23:49:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:04,893 INFO L93 Difference]: Finished difference Result 1567 states and 2420 transitions. [2024-11-18 23:49:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 23:49:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 4 states have call successors, (67), 3 states have call predecessors, (67), 8 states have return successors, (68), 7 states have call predecessors, (68), 4 states have call successors, (68) Word has length 355 [2024-11-18 23:49:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:04,900 INFO L225 Difference]: With dead ends: 1567 [2024-11-18 23:49:04,900 INFO L226 Difference]: Without dead ends: 885 [2024-11-18 23:49:04,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 700 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=509, Invalid=1471, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 23:49:04,903 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 564 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:04,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1067 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:49:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-18 23:49:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 867. [2024-11-18 23:49:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 602 states have (on average 1.3770764119601329) internal successors, (829), 604 states have internal predecessors, (829), 241 states have call successors, (241), 23 states have call predecessors, (241), 23 states have return successors, (241), 239 states have call predecessors, (241), 241 states have call successors, (241) [2024-11-18 23:49:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1311 transitions. [2024-11-18 23:49:04,985 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1311 transitions. Word has length 355 [2024-11-18 23:49:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:04,986 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1311 transitions. [2024-11-18 23:49:04,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 4 states have call successors, (67), 3 states have call predecessors, (67), 8 states have return successors, (68), 7 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-18 23:49:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1311 transitions. [2024-11-18 23:49:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:49:04,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:04,988 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:05,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:49:05,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:05,192 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:05,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1503350558, now seen corresponding path program 1 times [2024-11-18 23:49:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941501490] [2024-11-18 23:49:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 12 proven. 150 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2024-11-18 23:49:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941501490] [2024-11-18 23:49:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941501490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761040467] [2024-11-18 23:49:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:06,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:06,565 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) [2024-11-18 23:49:06,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:49:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:06,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-18 23:49:06,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3368 proven. 756 refuted. 0 times theorem prover too weak. 1816 trivial. 0 not checked. [2024-11-18 23:49:11,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 324 proven. 603 refuted. 0 times theorem prover too weak. 5013 trivial. 0 not checked. [2024-11-18 23:49:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761040467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:15,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:15,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 32, 30] total 68 [2024-11-18 23:49:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351925262] [2024-11-18 23:49:15,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:15,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-18 23:49:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-18 23:49:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=881, Invalid=3675, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 23:49:15,669 INFO L87 Difference]: Start difference. First operand 867 states and 1311 transitions. Second operand has 68 states, 65 states have (on average 4.138461538461539) internal successors, (269), 61 states have internal predecessors, (269), 19 states have call successors, (160), 10 states have call predecessors, (160), 20 states have return successors, (161), 19 states have call predecessors, (161), 19 states have call successors, (161) [2024-11-18 23:49:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:45,430 INFO L93 Difference]: Finished difference Result 9223 states and 13106 transitions. [2024-11-18 23:49:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2024-11-18 23:49:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 65 states have (on average 4.138461538461539) internal successors, (269), 61 states have internal predecessors, (269), 19 states have call successors, (160), 10 states have call predecessors, (160), 20 states have return successors, (161), 19 states have call predecessors, (161), 19 states have call successors, (161) Word has length 355 [2024-11-18 23:49:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:45,494 INFO L225 Difference]: With dead ends: 9223 [2024-11-18 23:49:45,495 INFO L226 Difference]: Without dead ends: 8557 [2024-11-18 23:49:45,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55163 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=21388, Invalid=124918, Unknown=0, NotChecked=0, Total=146306 [2024-11-18 23:49:45,524 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 4765 mSDsluCounter, 7443 mSDsCounter, 0 mSdLazyCounter, 12645 mSolverCounterSat, 2674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 7984 SdHoareTripleChecker+Invalid, 15319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2674 IncrementalHoareTripleChecker+Valid, 12645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:45,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 7984 Invalid, 15319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2674 Valid, 12645 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-18 23:49:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2024-11-18 23:49:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 3031. [2024-11-18 23:49:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2269 states have (on average 1.359189070074923) internal successors, (3084), 2275 states have internal predecessors, (3084), 613 states have call successors, (613), 148 states have call predecessors, (613), 148 states have return successors, (613), 607 states have call predecessors, (613), 613 states have call successors, (613) [2024-11-18 23:49:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4310 transitions. [2024-11-18 23:49:46,047 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4310 transitions. Word has length 355 [2024-11-18 23:49:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:46,050 INFO L471 AbstractCegarLoop]: Abstraction has 3031 states and 4310 transitions. [2024-11-18 23:49:46,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 65 states have (on average 4.138461538461539) internal successors, (269), 61 states have internal predecessors, (269), 19 states have call successors, (160), 10 states have call predecessors, (160), 20 states have return successors, (161), 19 states have call predecessors, (161), 19 states have call successors, (161) [2024-11-18 23:49:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4310 transitions. [2024-11-18 23:49:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:49:46,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:46,052 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:46,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:49:46,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:46,254 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash 223486880, now seen corresponding path program 1 times [2024-11-18 23:49:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:46,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612845377] [2024-11-18 23:49:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:46,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat