./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-73.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-73.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 e46325a5cbccf5f74622365796a8d3563d7257b4492aea289104474afb2662ab --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:46:52,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:46:52,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:46:52,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:46:52,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:46:52,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:46:52,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:46:52,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:46:52,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:46:52,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:46:52,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:46:52,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:46:52,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:46:52,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:46:52,656 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:46:52,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:46:52,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:46:52,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:46:52,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:46:52,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:46:52,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:46:52,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:46:52,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:46:52,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:46:52,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:46:52,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:46:52,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:46:52,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:46:52,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:46:52,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:46:52,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:46:52,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:46:52,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:46:52,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:46:52,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:46:52,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:46:52,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:46:52,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:46:52,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:46:52,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:46:52,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:46:52,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:46:52,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46325a5cbccf5f74622365796a8d3563d7257b4492aea289104474afb2662ab [2024-11-18 23:46:52,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:46:52,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:46:52,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:46:52,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:46:52,949 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:46:52,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-73.i [2024-11-18 23:46:54,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:46:54,671 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:46:54,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-73.i [2024-11-18 23:46:54,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbb88716/3620d9f01a6e4bcb8462554ed11eba6f/FLAG70f8cffa9 [2024-11-18 23:46:54,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbb88716/3620d9f01a6e4bcb8462554ed11eba6f [2024-11-18 23:46:54,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:46:54,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:46:54,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:46:54,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:46:54,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:46:54,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:54" (1/1) ... [2024-11-18 23:46:54,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205d9c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:54, skipping insertion in model container [2024-11-18 23:46:54,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:54" (1/1) ... [2024-11-18 23:46:54,753 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:46:54,934 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-73.i[916,929] [2024-11-18 23:46:55,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:46:55,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:46:55,171 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-73.i[916,929] [2024-11-18 23:46:55,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:46:55,268 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:46:55,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55 WrapperNode [2024-11-18 23:46:55,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:46:55,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:46:55,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:46:55,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:46:55,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,359 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2024-11-18 23:46:55,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:46:55,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:46:55,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:46:55,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:46:55,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,439 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 23:46:55,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:46:55,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:46:55,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:46:55,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:46:55,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (1/1) ... [2024-11-18 23:46:55,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:46:55,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:55,537 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 23:46:55,540 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 23:46:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:46:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:46:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:46:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:46:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:46:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:46:55,722 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:46:55,723 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:46:56,609 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-18 23:46:56,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:46:56,636 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:46:56,636 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:46:56,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:56 BoogieIcfgContainer [2024-11-18 23:46:56,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:46:56,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:46:56,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:46:56,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:46:56,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:46:54" (1/3) ... [2024-11-18 23:46:56,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b9fe5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:56, skipping insertion in model container [2024-11-18 23:46:56,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:55" (2/3) ... [2024-11-18 23:46:56,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b9fe5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:56, skipping insertion in model container [2024-11-18 23:46:56,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:56" (3/3) ... [2024-11-18 23:46:56,652 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-73.i [2024-11-18 23:46:56,670 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:46:56,670 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:46:56,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:46:56,748 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;@5fd50f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:46:56,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:46:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 120 states have (on average 1.4916666666666667) internal successors, (179), 121 states have internal predecessors, (179), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:46:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:46:56,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:56,782 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:56,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:56,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash -74718073, now seen corresponding path program 1 times [2024-11-18 23:46:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792274847] [2024-11-18 23:46:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2024-11-18 23:46:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792274847] [2024-11-18 23:46:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792274847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:46:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251445390] [2024-11-18 23:46:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:57,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:57,416 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 23:46:57,418 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 23:46:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:57,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:46:57,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2024-11-18 23:46:57,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:46:57,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251445390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:57,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:46:57,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:46:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261871594] [2024-11-18 23:46:57,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:57,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:46:57,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:46:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:46:57,867 INFO L87 Difference]: Start difference. First operand has 177 states, 120 states have (on average 1.4916666666666667) internal successors, (179), 121 states have internal predecessors, (179), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-18 23:46:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:57,915 INFO L93 Difference]: Finished difference Result 347 states and 622 transitions. [2024-11-18 23:46:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:46:57,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 350 [2024-11-18 23:46:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:57,930 INFO L225 Difference]: With dead ends: 347 [2024-11-18 23:46:57,930 INFO L226 Difference]: Without dead ends: 173 [2024-11-18 23:46:57,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 351 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 23:46:57,943 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 23:46:57,944 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 23:46:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-18 23:46:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-18 23:46:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 117 states have (on average 1.4615384615384615) internal successors, (171), 117 states have internal predecessors, (171), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:46:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 279 transitions. [2024-11-18 23:46:58,016 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 279 transitions. Word has length 350 [2024-11-18 23:46:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 279 transitions. [2024-11-18 23:46:58,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-18 23:46:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 279 transitions. [2024-11-18 23:46:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:46:58,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:58,029 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:58,049 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 23:46:58,229 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 23:46:58,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:58,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash -308769789, now seen corresponding path program 1 times [2024-11-18 23:46:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189191987] [2024-11-18 23:46:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-18 23:46:59,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189191987] [2024-11-18 23:46:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189191987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:59,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:46:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774342321] [2024-11-18 23:46:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:59,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:46:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:59,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:46:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:46:59,523 INFO L87 Difference]: Start difference. First operand 173 states and 279 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:00,132 INFO L93 Difference]: Finished difference Result 573 states and 930 transitions. [2024-11-18 23:47:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:47:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 350 [2024-11-18 23:47:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:00,139 INFO L225 Difference]: With dead ends: 573 [2024-11-18 23:47:00,139 INFO L226 Difference]: Without dead ends: 403 [2024-11-18 23:47:00,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:47:00,145 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 301 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:00,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1091 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:47:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-18 23:47:00,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 341. [2024-11-18 23:47:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 230 states have (on average 1.4652173913043478) internal successors, (337), 230 states have internal predecessors, (337), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-18 23:47:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 553 transitions. [2024-11-18 23:47:00,236 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 553 transitions. Word has length 350 [2024-11-18 23:47:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:00,239 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 553 transitions. [2024-11-18 23:47:00,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 553 transitions. [2024-11-18 23:47:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:47:00,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:00,246 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:00,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:47:00,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:00,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1206163067, now seen corresponding path program 1 times [2024-11-18 23:47:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411161561] [2024-11-18 23:47:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-18 23:47:01,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:01,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411161561] [2024-11-18 23:47:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411161561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:47:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404514064] [2024-11-18 23:47:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:01,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:47:01,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:47:01,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:47:01,216 INFO L87 Difference]: Start difference. First operand 341 states and 553 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:01,719 INFO L93 Difference]: Finished difference Result 1415 states and 2279 transitions. [2024-11-18 23:47:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:47:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 350 [2024-11-18 23:47:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:01,737 INFO L225 Difference]: With dead ends: 1415 [2024-11-18 23:47:01,738 INFO L226 Difference]: Without dead ends: 1077 [2024-11-18 23:47:01,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:47:01,741 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 549 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:01,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1453 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:47:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-11-18 23:47:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 705. [2024-11-18 23:47:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 520 states have (on average 1.5326923076923078) internal successors, (797), 522 states have internal predecessors, (797), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 178 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-18 23:47:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1157 transitions. [2024-11-18 23:47:01,888 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1157 transitions. Word has length 350 [2024-11-18 23:47:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:01,890 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 1157 transitions. [2024-11-18 23:47:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1157 transitions. [2024-11-18 23:47:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:47:01,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:01,897 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:01,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:47:01,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:01,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2059444931, now seen corresponding path program 1 times [2024-11-18 23:47:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803466947] [2024-11-18 23:47:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 96 proven. 63 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803466947] [2024-11-18 23:47:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803466947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327979796] [2024-11-18 23:47:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:02,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:02,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:02,945 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 23:47:02,949 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 23:47:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:03,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:47:03,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2573 proven. 51 refuted. 0 times theorem prover too weak. 3100 trivial. 0 not checked. [2024-11-18 23:47:03,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 108 proven. 51 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:03,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327979796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:47:03,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:47:03,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 23:47:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368981016] [2024-11-18 23:47:03,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:03,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:47:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:47:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:47:03,883 INFO L87 Difference]: Start difference. First operand 705 states and 1157 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 23:47:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:04,627 INFO L93 Difference]: Finished difference Result 1227 states and 1978 transitions. [2024-11-18 23:47:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 23:47:04,628 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 350 [2024-11-18 23:47:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:04,632 INFO L225 Difference]: With dead ends: 1227 [2024-11-18 23:47:04,633 INFO L226 Difference]: Without dead ends: 525 [2024-11-18 23:47:04,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 697 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:47:04,636 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 479 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:04,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 630 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:47:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-18 23:47:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 508. [2024-11-18 23:47:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 354 states have (on average 1.4435028248587571) internal successors, (511), 355 states have internal predecessors, (511), 144 states have call successors, (144), 9 states have call predecessors, (144), 9 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-18 23:47:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 799 transitions. [2024-11-18 23:47:04,699 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 799 transitions. Word has length 350 [2024-11-18 23:47:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:04,700 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 799 transitions. [2024-11-18 23:47:04,702 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 23:47:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 799 transitions. [2024-11-18 23:47:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 23:47:04,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:04,708 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:04,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:47:04,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 23:47:04,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:04,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash 272523563, now seen corresponding path program 1 times [2024-11-18 23:47:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187474346] [2024-11-18 23:47:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-18 23:47:05,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187474346] [2024-11-18 23:47:05,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187474346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:05,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:05,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:47:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494289522] [2024-11-18 23:47:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:05,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:47:05,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:47:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:05,089 INFO L87 Difference]: Start difference. First operand 508 states and 799 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:05,201 INFO L93 Difference]: Finished difference Result 1360 states and 2141 transitions. [2024-11-18 23:47:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:47:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 351 [2024-11-18 23:47:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:05,209 INFO L225 Difference]: With dead ends: 1360 [2024-11-18 23:47:05,209 INFO L226 Difference]: Without dead ends: 918 [2024-11-18 23:47:05,211 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 23:47:05,211 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 249 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:05,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 745 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:47:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-18 23:47:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 721. [2024-11-18 23:47:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 527 states have (on average 1.4648956356736242) internal successors, (772), 529 states have internal predecessors, (772), 181 states have call successors, (181), 12 states have call predecessors, (181), 12 states have return successors, (181), 179 states have call predecessors, (181), 181 states have call successors, (181) [2024-11-18 23:47:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1134 transitions. [2024-11-18 23:47:05,306 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1134 transitions. Word has length 351 [2024-11-18 23:47:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:05,307 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1134 transitions. [2024-11-18 23:47:05,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1134 transitions. [2024-11-18 23:47:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 23:47:05,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:05,312 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:05,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:47:05,313 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:05,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 637658603, now seen corresponding path program 1 times [2024-11-18 23:47:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:05,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106322885] [2024-11-18 23:47:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-18 23:47:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106322885] [2024-11-18 23:47:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106322885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:47:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510721526] [2024-11-18 23:47:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:05,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:47:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:47:05,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:47:05,978 INFO L87 Difference]: Start difference. First operand 721 states and 1134 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, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:06,203 INFO L93 Difference]: Finished difference Result 1168 states and 1836 transitions. [2024-11-18 23:47:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:47:06,203 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, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 351 [2024-11-18 23:47:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:06,228 INFO L225 Difference]: With dead ends: 1168 [2024-11-18 23:47:06,228 INFO L226 Difference]: Without dead ends: 513 [2024-11-18 23:47:06,230 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 23:47:06,231 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 416 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:06,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 438 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:47:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-18 23:47:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 445. [2024-11-18 23:47:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 328 states have (on average 1.4359756097560976) internal successors, (471), 328 states have internal predecessors, (471), 108 states have call successors, (108), 8 states have call predecessors, (108), 8 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-18 23:47:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 687 transitions. [2024-11-18 23:47:06,309 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 687 transitions. Word has length 351 [2024-11-18 23:47:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:06,310 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 687 transitions. [2024-11-18 23:47:06,310 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, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 687 transitions. [2024-11-18 23:47:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 23:47:06,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:06,316 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:06,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:47:06,316 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:06,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1183878513, now seen corresponding path program 1 times [2024-11-18 23:47:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505219086] [2024-11-18 23:47:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:07,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505219086] [2024-11-18 23:47:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505219086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901668620] [2024-11-18 23:47:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:07,730 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 23:47:07,731 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 23:47:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:07,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 23:47:08,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1985 proven. 33 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2024-11-18 23:47:08,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:09,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901668620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:47:09,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:47:09,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-11-18 23:47:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631754671] [2024-11-18 23:47:09,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:09,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:47:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:47:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:47:09,411 INFO L87 Difference]: Start difference. First operand 445 states and 687 transitions. Second operand has 16 states, 15 states have (on average 11.6) internal successors, (174), 16 states have internal predecessors, (174), 6 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (120), 5 states have call predecessors, (120), 6 states have call successors, (120) [2024-11-18 23:47:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:11,192 INFO L93 Difference]: Finished difference Result 1131 states and 1733 transitions. [2024-11-18 23:47:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 23:47:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.6) internal successors, (174), 16 states have internal predecessors, (174), 6 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (120), 5 states have call predecessors, (120), 6 states have call successors, (120) Word has length 352 [2024-11-18 23:47:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:11,199 INFO L225 Difference]: With dead ends: 1131 [2024-11-18 23:47:11,199 INFO L226 Difference]: Without dead ends: 689 [2024-11-18 23:47:11,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 700 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2024-11-18 23:47:11,202 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 1169 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:11,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1256 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:47:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-18 23:47:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 548. [2024-11-18 23:47:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.455813953488372) internal successors, (626), 430 states have internal predecessors, (626), 108 states have call successors, (108), 9 states have call predecessors, (108), 9 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-18 23:47:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 842 transitions. [2024-11-18 23:47:11,294 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 842 transitions. Word has length 352 [2024-11-18 23:47:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:11,295 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 842 transitions. [2024-11-18 23:47:11,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.6) internal successors, (174), 16 states have internal predecessors, (174), 6 states have call successors, (120), 3 states have call predecessors, (120), 6 states have return successors, (120), 5 states have call predecessors, (120), 6 states have call successors, (120) [2024-11-18 23:47:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 842 transitions. [2024-11-18 23:47:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 23:47:11,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:11,302 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:11,322 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 23:47:11,503 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 23:47:11,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:11,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:11,505 INFO L85 PathProgramCache]: Analyzing trace with hash -690441566, now seen corresponding path program 1 times [2024-11-18 23:47:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712235730] [2024-11-18 23:47:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:47:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946062427] [2024-11-18 23:47:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:12,471 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 23:47:12,472 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 23:47:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:12,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:47:12,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-18 23:47:12,823 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:47:12,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712235730] [2024-11-18 23:47:12,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:47:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946062427] [2024-11-18 23:47:12,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946062427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:12,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:12,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:47:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250081162] [2024-11-18 23:47:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:12,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:47:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:47:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:47:12,830 INFO L87 Difference]: Start difference. First operand 548 states and 842 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:13,201 INFO L93 Difference]: Finished difference Result 1620 states and 2493 transitions. [2024-11-18 23:47:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:47:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 353 [2024-11-18 23:47:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:13,210 INFO L225 Difference]: With dead ends: 1620 [2024-11-18 23:47:13,211 INFO L226 Difference]: Without dead ends: 1075 [2024-11-18 23:47:13,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:47:13,214 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 513 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:13,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 980 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:47:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2024-11-18 23:47:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1069. [2024-11-18 23:47:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 834 states have (on average 1.4448441247002397) internal successors, (1205), 834 states have internal predecessors, (1205), 216 states have call successors, (216), 18 states have call predecessors, (216), 18 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 23:47:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1637 transitions. [2024-11-18 23:47:13,364 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1637 transitions. Word has length 353 [2024-11-18 23:47:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:13,364 INFO L471 AbstractCegarLoop]: Abstraction has 1069 states and 1637 transitions. [2024-11-18 23:47:13,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-18 23:47:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1637 transitions. [2024-11-18 23:47:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 23:47:13,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:13,371 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:13,394 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 23:47:13,571 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 23:47:13,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:13,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -549892956, now seen corresponding path program 1 times [2024-11-18 23:47:13,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:13,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777617686] [2024-11-18 23:47:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:13,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:47:14,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480796573] [2024-11-18 23:47:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:14,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:14,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:47:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:14,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 23:47:14,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2937 proven. 462 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2024-11-18 23:47:18,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:47,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777617686] [2024-11-18 23:47:47,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:47:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480796573] [2024-11-18 23:47:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480796573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:47,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:47:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-18 23:47:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779141348] [2024-11-18 23:47:47,184 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:47,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 23:47:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 23:47:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=688, Unknown=4, NotChecked=0, Total=870 [2024-11-18 23:47:47,186 INFO L87 Difference]: Start difference. First operand 1069 states and 1637 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 6 states have call successors, (54), 6 states have call predecessors, (54), 8 states have return successors, (54), 5 states have call predecessors, (54), 6 states have call successors, (54) [2024-11-18 23:47:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:52,587 INFO L93 Difference]: Finished difference Result 2269 states and 3406 transitions. [2024-11-18 23:47:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 23:47:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 6 states have call successors, (54), 6 states have call predecessors, (54), 8 states have return successors, (54), 5 states have call predecessors, (54), 6 states have call successors, (54) Word has length 353 [2024-11-18 23:47:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:52,598 INFO L225 Difference]: With dead ends: 2269 [2024-11-18 23:47:52,598 INFO L226 Difference]: Without dead ends: 1757 [2024-11-18 23:47:52,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=329, Invalid=1149, Unknown=4, NotChecked=0, Total=1482 [2024-11-18 23:47:52,602 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 1299 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:52,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 2261 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-18 23:47:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-11-18 23:47:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1215. [2024-11-18 23:47:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 960 states have (on average 1.4166666666666667) internal successors, (1360), 960 states have internal predecessors, (1360), 216 states have call successors, (216), 38 states have call predecessors, (216), 38 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 23:47:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1792 transitions. [2024-11-18 23:47:52,731 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1792 transitions. Word has length 353 [2024-11-18 23:47:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:52,732 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1792 transitions. [2024-11-18 23:47:52,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 6 states have call successors, (54), 6 states have call predecessors, (54), 8 states have return successors, (54), 5 states have call predecessors, (54), 6 states have call successors, (54) [2024-11-18 23:47:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1792 transitions. [2024-11-18 23:47:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:47:52,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:52,738 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:52,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:47:52,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:52,942 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:52,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1442671296, now seen corresponding path program 1 times [2024-11-18 23:47:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858272532] [2024-11-18 23:47:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 138 proven. 21 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:53,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:53,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858272532] [2024-11-18 23:47:53,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858272532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:53,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098678400] [2024-11-18 23:47:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:53,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:53,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:47:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:53,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:47:53,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1433 proven. 21 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2024-11-18 23:47:55,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 138 proven. 21 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2024-11-18 23:47:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098678400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:47:56,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:47:56,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2024-11-18 23:47:56,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776498279] [2024-11-18 23:47:56,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:56,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:47:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:47:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:47:56,214 INFO L87 Difference]: Start difference. First operand 1215 states and 1792 transitions. Second operand has 16 states, 16 states have (on average 11.0625) internal successors, (177), 16 states have internal predecessors, (177), 5 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) [2024-11-18 23:47:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:58,655 INFO L93 Difference]: Finished difference Result 3144 states and 4706 transitions. [2024-11-18 23:47:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:47:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0625) internal successors, (177), 16 states have internal predecessors, (177), 5 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) Word has length 354 [2024-11-18 23:47:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:58,676 INFO L225 Difference]: With dead ends: 3144 [2024-11-18 23:47:58,676 INFO L226 Difference]: Without dead ends: 2441 [2024-11-18 23:47:58,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:47:58,681 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 660 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:58,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1929 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 23:47:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2024-11-18 23:47:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1777. [2024-11-18 23:47:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1392 states have (on average 1.4066091954022988) internal successors, (1958), 1392 states have internal predecessors, (1958), 324 states have call successors, (324), 60 states have call predecessors, (324), 60 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-18 23:47:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2606 transitions. [2024-11-18 23:47:58,884 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2606 transitions. Word has length 354 [2024-11-18 23:47:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:58,885 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2606 transitions. [2024-11-18 23:47:58,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0625) internal successors, (177), 16 states have internal predecessors, (177), 5 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) [2024-11-18 23:47:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2606 transitions. [2024-11-18 23:47:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:47:58,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:58,888 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:58,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 23:47:59,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:59,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:59,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2144271170, now seen corresponding path program 1 times [2024-11-18 23:47:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190265546] [2024-11-18 23:47:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:59,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:47:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019874318] [2024-11-18 23:47:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:59,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:59,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 23:47:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:59,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 23:47:59,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 3635 proven. 261 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2024-11-18 23:48:04,033 INFO L311 TraceCheckSpWp]: Computing backward predicates...