./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-14.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-14.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 aec2cd5ae54508e6b09d164bd3878415d3b0f8002b89da4b1a1ed3f9475eb68f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:40:04,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:40:04,437 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:40:04,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:40:04,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:40:04,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:40:04,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:40:04,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:40:04,477 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:40:04,478 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:40:04,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:40:04,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:40:04,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:40:04,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:40:04,483 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:40:04,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:40:04,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:40:04,484 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:40:04,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:40:04,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:40:04,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:40:04,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:40:04,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:40:04,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:40:04,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:40:04,488 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:40:04,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:40:04,488 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:40:04,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:40:04,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:40:04,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:40:04,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:40:04,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:04,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:40:04,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:40:04,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:40:04,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:40:04,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:40:04,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:40:04,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:40:04,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:40:04,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:40:04,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec2cd5ae54508e6b09d164bd3878415d3b0f8002b89da4b1a1ed3f9475eb68f [2024-11-18 23:40:04,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:40:04,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:40:04,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:40:04,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:40:04,794 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:40:04,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-14.i [2024-11-18 23:40:06,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:40:06,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:40:06,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-14.i [2024-11-18 23:40:06,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b738c287/09fa327d9a654a39829b29cc70d59af3/FLAG65612f47c [2024-11-18 23:40:06,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b738c287/09fa327d9a654a39829b29cc70d59af3 [2024-11-18 23:40:06,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:40:06,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:40:06,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:06,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:40:06,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:40:06,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:06" (1/1) ... [2024-11-18 23:40:06,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce5b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:06, skipping insertion in model container [2024-11-18 23:40:06,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:06" (1/1) ... [2024-11-18 23:40:06,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:40:06,771 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-14.i[916,929] [2024-11-18 23:40:06,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:06,939 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:40:06,952 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-14.i[916,929] [2024-11-18 23:40:07,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:07,055 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:40:07,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07 WrapperNode [2024-11-18 23:40:07,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:07,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:07,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:40:07,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:40:07,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,151 INFO L138 Inliner]: procedures = 26, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 438 [2024-11-18 23:40:07,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:07,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:40:07,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:40:07,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:40:07,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,221 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 23:40:07,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:40:07,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:40:07,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:40:07,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:40:07,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (1/1) ... [2024-11-18 23:40:07,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:07,328 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 23:40:07,332 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 23:40:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:40:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:40:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:40:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:40:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:40:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:40:07,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:40:07,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:40:08,314 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-18 23:40:08,314 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:40:08,360 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:40:08,361 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:40:08,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:08 BoogieIcfgContainer [2024-11-18 23:40:08,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:40:08,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:40:08,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:40:08,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:40:08,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:40:06" (1/3) ... [2024-11-18 23:40:08,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49170b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:08, skipping insertion in model container [2024-11-18 23:40:08,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:07" (2/3) ... [2024-11-18 23:40:08,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49170b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:08, skipping insertion in model container [2024-11-18 23:40:08,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:08" (3/3) ... [2024-11-18 23:40:08,374 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-14.i [2024-11-18 23:40:08,395 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:40:08,396 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:40:08,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:40:08,475 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;@643c1b36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:40:08,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:40:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 124 states have (on average 1.467741935483871) internal successors, (182), 125 states have internal predecessors, (182), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 23:40:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:40:08,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:08,499 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:08,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:08,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2003186281, now seen corresponding path program 1 times [2024-11-18 23:40:08,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749550631] [2024-11-18 23:40:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2024-11-18 23:40:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749550631] [2024-11-18 23:40:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749550631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308368139] [2024-11-18 23:40:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:09,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:09,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:40:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:09,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:40:09,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2024-11-18 23:40:09,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:40:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308368139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:09,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:40:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:40:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715036524] [2024-11-18 23:40:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:09,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:40:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:40:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:09,538 INFO L87 Difference]: Start difference. First operand has 180 states, 124 states have (on average 1.467741935483871) internal successors, (182), 125 states have internal predecessors, (182), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2024-11-18 23:40:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:09,577 INFO L93 Difference]: Finished difference Result 353 states and 623 transitions. [2024-11-18 23:40:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:40:09,582 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) Word has length 343 [2024-11-18 23:40:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:09,591 INFO L225 Difference]: With dead ends: 353 [2024-11-18 23:40:09,591 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 23:40:09,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:09,598 INFO L432 NwaCegarLoop]: 279 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, 279 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:09,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 23:40:09,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 23:40:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 121 states have (on average 1.4297520661157024) internal successors, (173), 121 states have internal predecessors, (173), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 23:40:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 279 transitions. [2024-11-18 23:40:09,662 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 279 transitions. Word has length 343 [2024-11-18 23:40:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:09,665 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 279 transitions. [2024-11-18 23:40:09,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2024-11-18 23:40:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 279 transitions. [2024-11-18 23:40:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:40:09,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:09,679 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:09,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:40:09,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:40:09,881 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:09,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2015261917, now seen corresponding path program 1 times [2024-11-18 23:40:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:09,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326249076] [2024-11-18 23:40:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-11-18 23:40:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326249076] [2024-11-18 23:40:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326249076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:10,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860833075] [2024-11-18 23:40:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:10,205 INFO L87 Difference]: Start difference. First operand 176 states and 279 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:10,325 INFO L93 Difference]: Finished difference Result 512 states and 813 transitions. [2024-11-18 23:40:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 343 [2024-11-18 23:40:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:10,333 INFO L225 Difference]: With dead ends: 512 [2024-11-18 23:40:10,333 INFO L226 Difference]: Without dead ends: 339 [2024-11-18 23:40:10,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:10,338 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 255 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:10,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 715 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:40:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-18 23:40:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 184. [2024-11-18 23:40:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 129 states have (on average 1.434108527131783) internal successors, (185), 129 states have internal predecessors, (185), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 23:40:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 291 transitions. [2024-11-18 23:40:10,379 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 291 transitions. Word has length 343 [2024-11-18 23:40:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:10,384 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 291 transitions. [2024-11-18 23:40:10,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 291 transitions. [2024-11-18 23:40:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:40:10,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:10,389 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:10,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:40:10,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:10,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1724643545, now seen corresponding path program 1 times [2024-11-18 23:40:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:10,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628932499] [2024-11-18 23:40:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-11-18 23:40:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:11,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628932499] [2024-11-18 23:40:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628932499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836980862] [2024-11-18 23:40:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:11,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:11,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:11,167 INFO L87 Difference]: Start difference. First operand 184 states and 291 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:11,470 INFO L93 Difference]: Finished difference Result 547 states and 868 transitions. [2024-11-18 23:40:11,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 343 [2024-11-18 23:40:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:11,481 INFO L225 Difference]: With dead ends: 547 [2024-11-18 23:40:11,482 INFO L226 Difference]: Without dead ends: 366 [2024-11-18 23:40:11,483 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 23:40:11,483 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 203 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:11,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 806 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:40:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-18 23:40:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 341. [2024-11-18 23:40:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 232 states have (on average 1.4396551724137931) internal successors, (334), 232 states have internal predecessors, (334), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-18 23:40:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 546 transitions. [2024-11-18 23:40:11,539 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 546 transitions. Word has length 343 [2024-11-18 23:40:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:11,541 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 546 transitions. [2024-11-18 23:40:11,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 546 transitions. [2024-11-18 23:40:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-18 23:40:11,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:11,544 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:11,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:40:11,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:11,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1949324830, now seen corresponding path program 1 times [2024-11-18 23:40:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103450852] [2024-11-18 23:40:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-11-18 23:40:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103450852] [2024-11-18 23:40:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103450852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105520846] [2024-11-18 23:40:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:12,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:12,520 INFO L87 Difference]: Start difference. First operand 341 states and 546 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:13,028 INFO L93 Difference]: Finished difference Result 890 states and 1428 transitions. [2024-11-18 23:40:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 346 [2024-11-18 23:40:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:13,038 INFO L225 Difference]: With dead ends: 890 [2024-11-18 23:40:13,040 INFO L226 Difference]: Without dead ends: 655 [2024-11-18 23:40:13,041 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 23:40:13,043 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 298 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:13,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 907 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:40:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2024-11-18 23:40:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 574. [2024-11-18 23:40:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 411 states have (on average 1.4695863746958637) internal successors, (604), 411 states have internal predecessors, (604), 159 states have call successors, (159), 3 states have call predecessors, (159), 3 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2024-11-18 23:40:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 922 transitions. [2024-11-18 23:40:13,165 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 922 transitions. Word has length 346 [2024-11-18 23:40:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:13,166 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 922 transitions. [2024-11-18 23:40:13,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2024-11-18 23:40:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 922 transitions. [2024-11-18 23:40:13,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-18 23:40:13,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:13,172 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:13,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:40:13,173 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:13,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash 500275300, now seen corresponding path program 1 times [2024-11-18 23:40:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789187708] [2024-11-18 23:40:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat