./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.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 299d219523e0e8430505eb8799431fd2cb8b55f1a08a4fbf5c709cb9d599e48c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:00:59,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:00:59,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:00:59,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:00:59,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:00:59,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:00:59,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:00:59,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:00:59,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:00:59,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:00:59,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:00:59,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:00:59,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:00:59,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:00:59,593 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:00:59,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:00:59,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:00:59,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:00:59,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:00:59,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:00:59,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:00:59,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:00:59,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:00:59,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:00:59,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:00:59,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:00:59,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:00:59,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:00:59,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:00:59,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:00:59,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:00:59,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:00:59,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:00:59,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:00:59,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:00:59,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:00:59,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:00:59,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:00:59,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:00:59,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:00:59,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:00:59,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:00:59,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 299d219523e0e8430505eb8799431fd2cb8b55f1a08a4fbf5c709cb9d599e48c [2024-11-22 12:00:59,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:00:59,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:00:59,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:00:59,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:00:59,880 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:00:59,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2024-11-22 12:01:01,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:01:01,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:01:01,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2024-11-22 12:01:01,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f510fe1a9/030f23e6c3f646728ec6f4f584b26810/FLAG02e3af789 [2024-11-22 12:01:01,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f510fe1a9/030f23e6c3f646728ec6f4f584b26810 [2024-11-22 12:01:01,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:01:01,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:01:01,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:01:01,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:01:01,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:01:01,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:01:01" (1/1) ... [2024-11-22 12:01:01,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dada65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:01, skipping insertion in model container [2024-11-22 12:01:01,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:01:01" (1/1) ... [2024-11-22 12:01:01,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:01:01,928 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_amount500_file-35.i[916,929] [2024-11-22 12:01:02,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:01:02,182 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:01:02,193 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_amount500_file-35.i[916,929] [2024-11-22 12:01:02,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:01:02,317 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:01:02,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02 WrapperNode [2024-11-22 12:01:02,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:01:02,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:01:02,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:01:02,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:01:02,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,436 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 785 [2024-11-22 12:01:02,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:01:02,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:01:02,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:01:02,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:01:02,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,478 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,536 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 12:01:02,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:01:02,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:01:02,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:01:02,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:01:02,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (1/1) ... [2024-11-22 12:01:02,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:01:02,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:01:02,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 12:01:02,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 12:01:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:01:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:01:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:01:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:01:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:01:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:01:02,879 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:01:02,882 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:01:04,275 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-22 12:01:04,275 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:01:04,299 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:01:04,301 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:01:04,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:01:04 BoogieIcfgContainer [2024-11-22 12:01:04,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:01:04,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:01:04,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:01:04,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:01:04,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:01:01" (1/3) ... [2024-11-22 12:01:04,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4e73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:01:04, skipping insertion in model container [2024-11-22 12:01:04,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:01:02" (2/3) ... [2024-11-22 12:01:04,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4e73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:01:04, skipping insertion in model container [2024-11-22 12:01:04,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:01:04" (3/3) ... [2024-11-22 12:01:04,312 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-35.i [2024-11-22 12:01:04,329 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:01:04,330 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:01:04,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:01:04,425 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;@6884d0cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:01:04,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:01:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 218 states have (on average 1.5229357798165137) internal successors, (332), 219 states have internal predecessors, (332), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-22 12:01:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 12:01:04,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:04,475 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:04,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:04,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash -891586136, now seen corresponding path program 1 times [2024-11-22 12:01:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964560110] [2024-11-22 12:01:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2024-11-22 12:01:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:05,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964560110] [2024-11-22 12:01:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964560110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:01:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684075439] [2024-11-22 12:01:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:01:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:01:05,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:01:05,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 12:01:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:05,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:01:05,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:01:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2024-11-22 12:01:05,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:01:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684075439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:05,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:01:05,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:01:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572922841] [2024-11-22 12:01:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:05,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:01:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:01:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:01:05,969 INFO L87 Difference]: Start difference. First operand has 300 states, 218 states have (on average 1.5229357798165137) internal successors, (332), 219 states have internal predecessors, (332), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-22 12:01:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:06,054 INFO L93 Difference]: Finished difference Result 585 states and 1040 transitions. [2024-11-22 12:01:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:01:06,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 535 [2024-11-22 12:01:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:06,074 INFO L225 Difference]: With dead ends: 585 [2024-11-22 12:01:06,074 INFO L226 Difference]: Without dead ends: 288 [2024-11-22 12:01:06,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:01:06,090 INFO L432 NwaCegarLoop]: 467 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, 467 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:06,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:01:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-22 12:01:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-22 12:01:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 207 states have (on average 1.4927536231884058) internal successors, (309), 207 states have internal predecessors, (309), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-22 12:01:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 467 transitions. [2024-11-22 12:01:06,187 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 467 transitions. Word has length 535 [2024-11-22 12:01:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:06,187 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 467 transitions. [2024-11-22 12:01:06,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-22 12:01:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 467 transitions. [2024-11-22 12:01:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 12:01:06,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:06,206 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:06,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 12:01:06,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 12:01:06,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:06,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1723757318, now seen corresponding path program 1 times [2024-11-22 12:01:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415680275] [2024-11-22 12:01:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415680275] [2024-11-22 12:01:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415680275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:07,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:01:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87225767] [2024-11-22 12:01:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:07,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:01:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:01:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:07,016 INFO L87 Difference]: Start difference. First operand 288 states and 467 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:07,160 INFO L93 Difference]: Finished difference Result 764 states and 1242 transitions. [2024-11-22 12:01:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:01:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-11-22 12:01:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:07,167 INFO L225 Difference]: With dead ends: 764 [2024-11-22 12:01:07,168 INFO L226 Difference]: Without dead ends: 479 [2024-11-22 12:01:07,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:07,170 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 310 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:07,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 924 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:01:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-22 12:01:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2024-11-22 12:01:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 363 states have (on average 1.5234159779614325) internal successors, (553), 364 states have internal predecessors, (553), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-22 12:01:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 773 transitions. [2024-11-22 12:01:07,239 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 773 transitions. Word has length 535 [2024-11-22 12:01:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:07,244 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 773 transitions. [2024-11-22 12:01:07,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 773 transitions. [2024-11-22 12:01:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 12:01:07,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:07,255 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:07,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:01:07,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:07,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1304904578, now seen corresponding path program 1 times [2024-11-22 12:01:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:07,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612699382] [2024-11-22 12:01:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:07,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612699382] [2024-11-22 12:01:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612699382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:07,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:01:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098453408] [2024-11-22 12:01:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:07,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:01:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:01:07,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:07,744 INFO L87 Difference]: Start difference. First operand 476 states and 773 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:07,881 INFO L93 Difference]: Finished difference Result 1332 states and 2158 transitions. [2024-11-22 12:01:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:01:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-11-22 12:01:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:07,891 INFO L225 Difference]: With dead ends: 1332 [2024-11-22 12:01:07,891 INFO L226 Difference]: Without dead ends: 859 [2024-11-22 12:01:07,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:07,894 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 386 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:07,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1283 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:01:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-22 12:01:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 519. [2024-11-22 12:01:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 406 states have (on average 1.5270935960591132) internal successors, (620), 407 states have internal predecessors, (620), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-22 12:01:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 840 transitions. [2024-11-22 12:01:07,966 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 840 transitions. Word has length 535 [2024-11-22 12:01:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:07,970 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 840 transitions. [2024-11-22 12:01:07,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 840 transitions. [2024-11-22 12:01:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 12:01:07,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:07,981 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:07,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:01:07,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:07,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 961476608, now seen corresponding path program 1 times [2024-11-22 12:01:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:07,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387872275] [2024-11-22 12:01:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:09,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387872275] [2024-11-22 12:01:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387872275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:09,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:09,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:01:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40413521] [2024-11-22 12:01:09,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:09,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:01:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:01:09,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:01:09,430 INFO L87 Difference]: Start difference. First operand 519 states and 840 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:09,832 INFO L93 Difference]: Finished difference Result 1732 states and 2799 transitions. [2024-11-22 12:01:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:01:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-11-22 12:01:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:09,841 INFO L225 Difference]: With dead ends: 1732 [2024-11-22 12:01:09,841 INFO L226 Difference]: Without dead ends: 1216 [2024-11-22 12:01:09,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:09,844 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 674 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:09,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1369 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:01:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2024-11-22 12:01:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1023. [2024-11-22 12:01:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 798 states have (on average 1.5137844611528821) internal successors, (1208), 800 states have internal predecessors, (1208), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2024-11-22 12:01:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1648 transitions. [2024-11-22 12:01:09,938 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1648 transitions. Word has length 535 [2024-11-22 12:01:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:09,939 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1648 transitions. [2024-11-22 12:01:09,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1648 transitions. [2024-11-22 12:01:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 12:01:09,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:09,950 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:09,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:01:09,952 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:09,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1793571452, now seen corresponding path program 1 times [2024-11-22 12:01:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250656965] [2024-11-22 12:01:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:10,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:10,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250656965] [2024-11-22 12:01:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250656965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:01:10,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560562057] [2024-11-22 12:01:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:10,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:01:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:10,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:01:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:01:10,941 INFO L87 Difference]: Start difference. First operand 1023 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:11,400 INFO L93 Difference]: Finished difference Result 2693 states and 4328 transitions. [2024-11-22 12:01:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:01:11,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-11-22 12:01:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:11,413 INFO L225 Difference]: With dead ends: 2693 [2024-11-22 12:01:11,413 INFO L226 Difference]: Without dead ends: 1673 [2024-11-22 12:01:11,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:11,418 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 310 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:11,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1365 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:01:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-11-22 12:01:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1208. [2024-11-22 12:01:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 902 states have (on average 1.4900221729490022) internal successors, (1344), 904 states have internal predecessors, (1344), 299 states have call successors, (299), 6 states have call predecessors, (299), 6 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) [2024-11-22 12:01:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1942 transitions. [2024-11-22 12:01:11,563 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1942 transitions. Word has length 535 [2024-11-22 12:01:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:11,564 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1942 transitions. [2024-11-22 12:01:11,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1942 transitions. [2024-11-22 12:01:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 12:01:11,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:11,575 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:11,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:01:11,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:11,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1492724523, now seen corresponding path program 1 times [2024-11-22 12:01:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576023255] [2024-11-22 12:01:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:11,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576023255] [2024-11-22 12:01:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576023255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:11,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:11,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:01:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194460508] [2024-11-22 12:01:11,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:11,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:01:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:01:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:11,977 INFO L87 Difference]: Start difference. First operand 1208 states and 1942 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:12,140 INFO L93 Difference]: Finished difference Result 2298 states and 3694 transitions. [2024-11-22 12:01:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:01:12,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 536 [2024-11-22 12:01:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:12,151 INFO L225 Difference]: With dead ends: 2298 [2024-11-22 12:01:12,151 INFO L226 Difference]: Without dead ends: 1278 [2024-11-22 12:01:12,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:12,159 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 273 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:12,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:01:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2024-11-22 12:01:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1034. [2024-11-22 12:01:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 790 states have (on average 1.5012658227848101) internal successors, (1186), 790 states have internal predecessors, (1186), 237 states have call successors, (237), 6 states have call predecessors, (237), 6 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2024-11-22 12:01:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1660 transitions. [2024-11-22 12:01:12,272 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1660 transitions. Word has length 536 [2024-11-22 12:01:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:12,273 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1660 transitions. [2024-11-22 12:01:12,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1660 transitions. [2024-11-22 12:01:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 12:01:12,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:12,283 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:12,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:01:12,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:12,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1834892119, now seen corresponding path program 1 times [2024-11-22 12:01:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873995727] [2024-11-22 12:01:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:13,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873995727] [2024-11-22 12:01:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873995727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:13,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:01:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816506874] [2024-11-22 12:01:13,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:13,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:01:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:13,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:01:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:01:13,237 INFO L87 Difference]: Start difference. First operand 1034 states and 1660 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:13,690 INFO L93 Difference]: Finished difference Result 2253 states and 3618 transitions. [2024-11-22 12:01:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:01:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 536 [2024-11-22 12:01:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:13,698 INFO L225 Difference]: With dead ends: 2253 [2024-11-22 12:01:13,699 INFO L226 Difference]: Without dead ends: 1397 [2024-11-22 12:01:13,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:13,703 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 353 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:13,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1372 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:01:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2024-11-22 12:01:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1325. [2024-11-22 12:01:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1081 states have (on average 1.5365402405180388) internal successors, (1661), 1081 states have internal predecessors, (1661), 237 states have call successors, (237), 6 states have call predecessors, (237), 6 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2024-11-22 12:01:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2135 transitions. [2024-11-22 12:01:13,828 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2135 transitions. Word has length 536 [2024-11-22 12:01:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:13,829 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2135 transitions. [2024-11-22 12:01:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2135 transitions. [2024-11-22 12:01:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-22 12:01:13,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:13,839 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:01:13,840 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash -777585014, now seen corresponding path program 1 times [2024-11-22 12:01:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289414853] [2024-11-22 12:01:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289414853] [2024-11-22 12:01:15,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289414853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:15,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:15,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:01:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186724446] [2024-11-22 12:01:15,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:15,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:01:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:01:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:15,293 INFO L87 Difference]: Start difference. First operand 1325 states and 2135 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:15,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:15,950 INFO L93 Difference]: Finished difference Result 4127 states and 6667 transitions. [2024-11-22 12:01:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:01:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 537 [2024-11-22 12:01:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:15,967 INFO L225 Difference]: With dead ends: 4127 [2024-11-22 12:01:15,967 INFO L226 Difference]: Without dead ends: 2949 [2024-11-22 12:01:15,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:01:15,973 INFO L432 NwaCegarLoop]: 665 mSDtfsCounter, 556 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:15,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 2080 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:01:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2024-11-22 12:01:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2463. [2024-11-22 12:01:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2057 states have (on average 1.5473991249392318) internal successors, (3183), 2057 states have internal predecessors, (3183), 395 states have call successors, (395), 10 states have call predecessors, (395), 10 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2024-11-22 12:01:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3973 transitions. [2024-11-22 12:01:16,237 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3973 transitions. Word has length 537 [2024-11-22 12:01:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:16,238 INFO L471 AbstractCegarLoop]: Abstraction has 2463 states and 3973 transitions. [2024-11-22 12:01:16,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3973 transitions. [2024-11-22 12:01:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 12:01:16,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:16,247 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:16,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:01:16,247 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:16,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -819937299, now seen corresponding path program 1 times [2024-11-22 12:01:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098314650] [2024-11-22 12:01:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:16,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098314650] [2024-11-22 12:01:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098314650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:01:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433456450] [2024-11-22 12:01:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:18,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:01:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:01:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:01:18,164 INFO L87 Difference]: Start difference. First operand 2463 states and 3973 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:18,606 INFO L93 Difference]: Finished difference Result 7942 states and 12837 transitions. [2024-11-22 12:01:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:01:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 538 [2024-11-22 12:01:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:18,638 INFO L225 Difference]: With dead ends: 7942 [2024-11-22 12:01:18,638 INFO L226 Difference]: Without dead ends: 5754 [2024-11-22 12:01:18,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:01:18,649 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 546 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:18,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1364 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:01:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2024-11-22 12:01:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 4824. [2024-11-22 12:01:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4297 states have (on average 1.567605306027461) internal successors, (6736), 4301 states have internal predecessors, (6736), 511 states have call successors, (511), 15 states have call predecessors, (511), 15 states have return successors, (511), 507 states have call predecessors, (511), 511 states have call successors, (511) [2024-11-22 12:01:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7758 transitions. [2024-11-22 12:01:18,999 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7758 transitions. Word has length 538 [2024-11-22 12:01:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:19,001 INFO L471 AbstractCegarLoop]: Abstraction has 4824 states and 7758 transitions. [2024-11-22 12:01:19,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7758 transitions. [2024-11-22 12:01:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 12:01:19,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:19,008 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:19,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 12:01:19,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:19,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 718402731, now seen corresponding path program 1 times [2024-11-22 12:01:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:19,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766877154] [2024-11-22 12:01:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-11-22 12:01:31,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766877154] [2024-11-22 12:01:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766877154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:01:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301651812] [2024-11-22 12:01:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:31,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:01:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:01:31,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:01:31,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 12:01:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:31,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 12:01:31,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:01:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2024-11-22 12:01:32,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:01:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-11-22 12:01:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301651812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:01:32,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:01:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 12:01:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768219926] [2024-11-22 12:01:32,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:01:32,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 12:01:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 12:01:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:01:32,821 INFO L87 Difference]: Start difference. First operand 4824 states and 7758 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2024-11-22 12:01:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:33,436 INFO L93 Difference]: Finished difference Result 8840 states and 14201 transitions. [2024-11-22 12:01:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 12:01:33,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 538 [2024-11-22 12:01:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:33,464 INFO L225 Difference]: With dead ends: 8840 [2024-11-22 12:01:33,464 INFO L226 Difference]: Without dead ends: 4540 [2024-11-22 12:01:33,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 12:01:33,476 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 743 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:33,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 959 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:01:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2024-11-22 12:01:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 3200. [2024-11-22 12:01:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2789 states have (on average 1.5209752599498028) internal successors, (4242), 2789 states have internal predecessors, (4242), 395 states have call successors, (395), 15 states have call predecessors, (395), 15 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2024-11-22 12:01:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5032 transitions. [2024-11-22 12:01:33,710 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5032 transitions. Word has length 538 [2024-11-22 12:01:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:33,711 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 5032 transitions. [2024-11-22 12:01:33,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2024-11-22 12:01:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5032 transitions. [2024-11-22 12:01:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 12:01:33,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:33,717 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:33,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 12:01:33,918 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,SelfDestructingSolverStorable9 [2024-11-22 12:01:33,919 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:33,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:33,919 INFO L85 PathProgramCache]: Analyzing trace with hash 61158889, now seen corresponding path program 1 times [2024-11-22 12:01:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374945298] [2024-11-22 12:01:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:35,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374945298] [2024-11-22 12:01:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374945298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:35,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:35,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:01:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673427771] [2024-11-22 12:01:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:35,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:01:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:01:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:35,286 INFO L87 Difference]: Start difference. First operand 3200 states and 5032 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:36,173 INFO L93 Difference]: Finished difference Result 10018 states and 15798 transitions. [2024-11-22 12:01:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:01:36,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 538 [2024-11-22 12:01:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:36,226 INFO L225 Difference]: With dead ends: 10018 [2024-11-22 12:01:36,226 INFO L226 Difference]: Without dead ends: 7050 [2024-11-22 12:01:36,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:36,238 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 871 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:36,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1564 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:01:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2024-11-22 12:01:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 4914. [2024-11-22 12:01:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4503 states have (on average 1.5358649789029535) internal successors, (6916), 4503 states have internal predecessors, (6916), 395 states have call successors, (395), 15 states have call predecessors, (395), 15 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2024-11-22 12:01:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 7706 transitions. [2024-11-22 12:01:36,554 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 7706 transitions. Word has length 538 [2024-11-22 12:01:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:36,555 INFO L471 AbstractCegarLoop]: Abstraction has 4914 states and 7706 transitions. [2024-11-22 12:01:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 7706 transitions. [2024-11-22 12:01:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 12:01:36,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:36,563 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:36,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 12:01:36,563 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:36,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1795263339, now seen corresponding path program 1 times [2024-11-22 12:01:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825566410] [2024-11-22 12:01:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:36,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825566410] [2024-11-22 12:01:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825566410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:36,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:36,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:01:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434913303] [2024-11-22 12:01:36,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:36,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:01:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:01:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:36,877 INFO L87 Difference]: Start difference. First operand 4914 states and 7706 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:37,181 INFO L93 Difference]: Finished difference Result 12246 states and 19242 transitions. [2024-11-22 12:01:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:01:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 538 [2024-11-22 12:01:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:37,215 INFO L225 Difference]: With dead ends: 12246 [2024-11-22 12:01:37,216 INFO L226 Difference]: Without dead ends: 7752 [2024-11-22 12:01:37,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:01:37,229 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 418 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:37,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1219 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:01:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2024-11-22 12:01:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 7174. [2024-11-22 12:01:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7174 states, 6435 states have (on average 1.5145299145299145) internal successors, (9746), 6435 states have internal predecessors, (9746), 711 states have call successors, (711), 27 states have call predecessors, (711), 27 states have return successors, (711), 711 states have call predecessors, (711), 711 states have call successors, (711) [2024-11-22 12:01:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7174 states to 7174 states and 11168 transitions. [2024-11-22 12:01:37,595 INFO L78 Accepts]: Start accepts. Automaton has 7174 states and 11168 transitions. Word has length 538 [2024-11-22 12:01:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:37,596 INFO L471 AbstractCegarLoop]: Abstraction has 7174 states and 11168 transitions. [2024-11-22 12:01:37,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7174 states and 11168 transitions. [2024-11-22 12:01:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 12:01:37,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:37,608 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:37,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 12:01:37,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:37,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash 423456041, now seen corresponding path program 1 times [2024-11-22 12:01:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:37,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238134992] [2024-11-22 12:01:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:37,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-11-22 12:01:40,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:40,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238134992] [2024-11-22 12:01:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238134992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:01:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136470984] [2024-11-22 12:01:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:40,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:01:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:01:40,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:01:40,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 12:01:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:40,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 12:01:40,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:01:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6228 proven. 111 refuted. 0 times theorem prover too weak. 5985 trivial. 0 not checked. [2024-11-22 12:01:41,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:01:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 123 proven. 111 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-11-22 12:01:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136470984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:01:41,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:01:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-22 12:01:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766887972] [2024-11-22 12:01:41,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:01:41,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 12:01:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 12:01:41,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-22 12:01:41,555 INFO L87 Difference]: Start difference. First operand 7174 states and 11168 transitions. Second operand has 13 states, 12 states have (on average 27.0) internal successors, (324), 13 states have internal predecessors, (324), 5 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 4 states have call predecessors, (190), 5 states have call successors, (190) [2024-11-22 12:01:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:42,962 INFO L93 Difference]: Finished difference Result 14852 states and 23129 transitions. [2024-11-22 12:01:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 12:01:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 27.0) internal successors, (324), 13 states have internal predecessors, (324), 5 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 4 states have call predecessors, (190), 5 states have call successors, (190) Word has length 538 [2024-11-22 12:01:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:42,990 INFO L225 Difference]: With dead ends: 14852 [2024-11-22 12:01:42,990 INFO L226 Difference]: Without dead ends: 8454 [2024-11-22 12:01:43,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2024-11-22 12:01:43,005 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 827 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:43,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1762 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 12:01:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2024-11-22 12:01:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 8390. [2024-11-22 12:01:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 7576 states have (on average 1.508843717001056) internal successors, (11431), 7584 states have internal predecessors, (11431), 759 states have call successors, (759), 54 states have call predecessors, (759), 54 states have return successors, (759), 751 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-22 12:01:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12949 transitions. [2024-11-22 12:01:43,436 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12949 transitions. Word has length 538 [2024-11-22 12:01:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:43,437 INFO L471 AbstractCegarLoop]: Abstraction has 8390 states and 12949 transitions. [2024-11-22 12:01:43,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 27.0) internal successors, (324), 13 states have internal predecessors, (324), 5 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 4 states have call predecessors, (190), 5 states have call successors, (190) [2024-11-22 12:01:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12949 transitions. [2024-11-22 12:01:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-22 12:01:43,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:43,447 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:43,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 12:01:43,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:01:43,649 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:43,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash -337170593, now seen corresponding path program 1 times [2024-11-22 12:01:43,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:43,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038444143] [2024-11-22 12:01:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:43,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:44,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038444143] [2024-11-22 12:01:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038444143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:44,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:01:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634148134] [2024-11-22 12:01:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:44,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:01:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:01:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:01:44,840 INFO L87 Difference]: Start difference. First operand 8390 states and 12949 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:45,868 INFO L93 Difference]: Finished difference Result 28624 states and 44334 transitions. [2024-11-22 12:01:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:01:45,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 540 [2024-11-22 12:01:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:45,928 INFO L225 Difference]: With dead ends: 28624 [2024-11-22 12:01:45,928 INFO L226 Difference]: Without dead ends: 21002 [2024-11-22 12:01:45,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:01:45,953 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 1033 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:45,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 2177 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:01:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21002 states. [2024-11-22 12:01:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21002 to 19238. [2024-11-22 12:01:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 17696 states have (on average 1.518874321880651) internal successors, (26878), 17712 states have internal predecessors, (26878), 1439 states have call successors, (1439), 102 states have call predecessors, (1439), 102 states have return successors, (1439), 1423 states have call predecessors, (1439), 1439 states have call successors, (1439) [2024-11-22 12:01:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 29756 transitions. [2024-11-22 12:01:46,944 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 29756 transitions. Word has length 540 [2024-11-22 12:01:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:46,945 INFO L471 AbstractCegarLoop]: Abstraction has 19238 states and 29756 transitions. [2024-11-22 12:01:46,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 29756 transitions. [2024-11-22 12:01:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-22 12:01:46,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:46,957 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:46,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 12:01:46,957 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:46,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 165642034, now seen corresponding path program 1 times [2024-11-22 12:01:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496612485] [2024-11-22 12:01:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-11-22 12:01:48,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:48,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496612485] [2024-11-22 12:01:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496612485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:01:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:01:48,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 12:01:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743191123] [2024-11-22 12:01:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:01:48,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 12:01:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:48,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 12:01:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:01:48,508 INFO L87 Difference]: Start difference. First operand 19238 states and 29756 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:01:50,346 INFO L93 Difference]: Finished difference Result 37818 states and 58207 transitions. [2024-11-22 12:01:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 12:01:50,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 541 [2024-11-22 12:01:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:01:50,410 INFO L225 Difference]: With dead ends: 37818 [2024-11-22 12:01:50,410 INFO L226 Difference]: Without dead ends: 22500 [2024-11-22 12:01:50,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-22 12:01:50,442 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 1492 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:01:50,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2512 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 12:01:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22500 states. [2024-11-22 12:01:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22500 to 20890. [2024-11-22 12:01:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20890 states, 19092 states have (on average 1.511313639220616) internal successors, (28854), 19124 states have internal predecessors, (28854), 1663 states have call successors, (1663), 134 states have call predecessors, (1663), 134 states have return successors, (1663), 1631 states have call predecessors, (1663), 1663 states have call successors, (1663) [2024-11-22 12:01:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20890 states to 20890 states and 32180 transitions. [2024-11-22 12:01:51,427 INFO L78 Accepts]: Start accepts. Automaton has 20890 states and 32180 transitions. Word has length 541 [2024-11-22 12:01:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:01:51,428 INFO L471 AbstractCegarLoop]: Abstraction has 20890 states and 32180 transitions. [2024-11-22 12:01:51,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-11-22 12:01:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20890 states and 32180 transitions. [2024-11-22 12:01:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-22 12:01:51,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:01:51,443 INFO L215 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:01:51,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 12:01:51,443 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:01:51,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:01:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash 188274288, now seen corresponding path program 1 times [2024-11-22 12:01:51,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:01:51,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268362125] [2024-11-22 12:01:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:01:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 45 proven. 189 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-11-22 12:01:55,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:01:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268362125] [2024-11-22 12:01:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268362125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:01:55,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473627143] [2024-11-22 12:01:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:01:55,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:01:55,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:01:55,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 12:01:55,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 12:01:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:01:55,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 12:01:55,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:01:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6691 proven. 198 refuted. 0 times theorem prover too weak. 5435 trivial. 0 not checked. [2024-11-22 12:01:57,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:01:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 570 proven. 123 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2024-11-22 12:01:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473627143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:01:58,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:01:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 12] total 30 [2024-11-22 12:01:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735581909] [2024-11-22 12:01:58,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:01:58,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 12:01:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:01:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 12:01:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2024-11-22 12:01:58,463 INFO L87 Difference]: Start difference. First operand 20890 states and 32180 transitions. Second operand has 30 states, 28 states have (on average 14.285714285714286) internal successors, (400), 27 states have internal predecessors, (400), 11 states have call successors, (190), 5 states have call predecessors, (190), 10 states have return successors, (191), 11 states have call predecessors, (191), 11 states have call successors, (191)