./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.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_amount100_file-88.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 7a94438cde4f2b77ff462971d0eccab102016c89632333d771f07852ad7ba7f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:31:00,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:31:00,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:31:00,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:31:00,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:31:00,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:31:00,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:31:00,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:31:00,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:31:00,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:31:00,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:31:00,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:31:00,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:31:00,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:31:00,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:31:00,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:31:00,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:31:00,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:31:00,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:31:00,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:31:00,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:31:00,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:31:00,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:31:00,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:31:00,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:31:00,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:31:00,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:31:00,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:31:00,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:31:00,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:31:00,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:31:00,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a94438cde4f2b77ff462971d0eccab102016c89632333d771f07852ad7ba7f7 [2024-11-22 11:31:00,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:31:00,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:31:00,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:31:00,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:31:00,817 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:31:00,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2024-11-22 11:31:02,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:31:02,239 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:31:02,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2024-11-22 11:31:02,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d27dfaf/04f5d09168ad4cadac686322a603797e/FLAG6f4b4c0d4 [2024-11-22 11:31:02,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d27dfaf/04f5d09168ad4cadac686322a603797e [2024-11-22 11:31:02,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:31:02,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:31:02,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:31:02,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:31:02,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:31:02,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70718559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02, skipping insertion in model container [2024-11-22 11:31:02,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:31:02,453 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_amount100_file-88.i[916,929] [2024-11-22 11:31:02,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:31:02,554 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:31:02,563 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_amount100_file-88.i[916,929] [2024-11-22 11:31:02,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:31:02,611 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:31:02,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02 WrapperNode [2024-11-22 11:31:02,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:31:02,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:31:02,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:31:02,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:31:02,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,662 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 281 [2024-11-22 11:31:02,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:31:02,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:31:02,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:31:02,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:31:02,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,690 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:31:02,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:31:02,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:31:02,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:31:02,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:31:02,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (1/1) ... [2024-11-22 11:31:02,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:31:02,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:02,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:31:02,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:31:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:31:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:31:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:31:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:31:02,878 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:31:02,879 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:31:03,400 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-22 11:31:03,400 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:31:03,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:31:03,414 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:31:03,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:31:03 BoogieIcfgContainer [2024-11-22 11:31:03,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:31:03,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:31:03,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:31:03,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:31:03,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:31:02" (1/3) ... [2024-11-22 11:31:03,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30829d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:31:03, skipping insertion in model container [2024-11-22 11:31:03,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:31:02" (2/3) ... [2024-11-22 11:31:03,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30829d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:31:03, skipping insertion in model container [2024-11-22 11:31:03,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:31:03" (3/3) ... [2024-11-22 11:31:03,422 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-88.i [2024-11-22 11:31:03,434 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:31:03,434 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:31:03,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:31:03,488 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;@6c74f598, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:31:03,488 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:31:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 86 states have (on average 1.430232558139535) internal successors, (123), 87 states have internal predecessors, (123), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 11:31:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 11:31:03,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:03,504 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:03,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:03,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -482501652, now seen corresponding path program 1 times [2024-11-22 11:31:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:03,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796352293] [2024-11-22 11:31:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-22 11:31:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796352293] [2024-11-22 11:31:03,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796352293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:31:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344776709] [2024-11-22 11:31:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:03,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:03,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:31:03,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:31:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:03,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:31:03,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:31:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-22 11:31:04,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:31:04,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344776709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:04,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:31:04,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:31:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143327041] [2024-11-22 11:31:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:04,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:31:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:31:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:31:04,033 INFO L87 Difference]: Start difference. First operand has 117 states, 86 states have (on average 1.430232558139535) internal successors, (123), 87 states have internal predecessors, (123), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 11:31:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:04,056 INFO L93 Difference]: Finished difference Result 227 states and 380 transitions. [2024-11-22 11:31:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:31:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2024-11-22 11:31:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:04,063 INFO L225 Difference]: With dead ends: 227 [2024-11-22 11:31:04,063 INFO L226 Difference]: Without dead ends: 113 [2024-11-22 11:31:04,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:31:04,068 INFO L432 NwaCegarLoop]: 172 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, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:04,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:31:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-22 11:31:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-22 11:31:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 83 states have internal predecessors, (116), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 11:31:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 172 transitions. [2024-11-22 11:31:04,130 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 172 transitions. Word has length 191 [2024-11-22 11:31:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:04,131 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 172 transitions. [2024-11-22 11:31:04,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-22 11:31:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 172 transitions. [2024-11-22 11:31:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 11:31:04,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:04,138 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:04,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:31:04,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:31:04,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:04,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1219460452, now seen corresponding path program 1 times [2024-11-22 11:31:04,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:04,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000700645] [2024-11-22 11:31:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:04,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000700645] [2024-11-22 11:31:04,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000700645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:04,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:04,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:31:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160742831] [2024-11-22 11:31:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:04,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:31:04,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:04,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:31:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:31:04,879 INFO L87 Difference]: Start difference. First operand 113 states and 172 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:05,215 INFO L93 Difference]: Finished difference Result 334 states and 511 transitions. [2024-11-22 11:31:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:31:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2024-11-22 11:31:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:05,219 INFO L225 Difference]: With dead ends: 334 [2024-11-22 11:31:05,219 INFO L226 Difference]: Without dead ends: 224 [2024-11-22 11:31:05,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:31:05,220 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 117 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:05,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 544 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:31:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-22 11:31:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 167. [2024-11-22 11:31:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-22 11:31:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2024-11-22 11:31:05,263 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 191 [2024-11-22 11:31:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:05,265 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2024-11-22 11:31:05,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:05,265 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2024-11-22 11:31:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 11:31:05,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:05,267 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:05,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:31:05,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:05,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 709987362, now seen corresponding path program 1 times [2024-11-22 11:31:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845998543] [2024-11-22 11:31:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845998543] [2024-11-22 11:31:05,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845998543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:05,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:31:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260957868] [2024-11-22 11:31:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:05,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:31:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:31:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:31:05,588 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:05,734 INFO L93 Difference]: Finished difference Result 427 states and 650 transitions. [2024-11-22 11:31:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:31:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2024-11-22 11:31:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:05,740 INFO L225 Difference]: With dead ends: 427 [2024-11-22 11:31:05,742 INFO L226 Difference]: Without dead ends: 317 [2024-11-22 11:31:05,743 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 11:31:05,744 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 248 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:05,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 484 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:31:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-22 11:31:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 271. [2024-11-22 11:31:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 183 states have (on average 1.3333333333333333) internal successors, (244), 183 states have internal predecessors, (244), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-22 11:31:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 412 transitions. [2024-11-22 11:31:05,793 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 412 transitions. Word has length 191 [2024-11-22 11:31:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:05,795 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 412 transitions. [2024-11-22 11:31:05,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 412 transitions. [2024-11-22 11:31:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 11:31:05,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:05,798 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:05,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:31:05,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:05,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -759876198, now seen corresponding path program 1 times [2024-11-22 11:31:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408468481] [2024-11-22 11:31:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:06,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408468481] [2024-11-22 11:31:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408468481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:06,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:06,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:31:06,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694611536] [2024-11-22 11:31:06,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:06,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:31:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:31:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:31:06,450 INFO L87 Difference]: Start difference. First operand 271 states and 412 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:07,226 INFO L93 Difference]: Finished difference Result 950 states and 1443 transitions. [2024-11-22 11:31:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:31:07,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-22 11:31:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:07,234 INFO L225 Difference]: With dead ends: 950 [2024-11-22 11:31:07,234 INFO L226 Difference]: Without dead ends: 736 [2024-11-22 11:31:07,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:31:07,237 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 438 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:07,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 809 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:31:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-22 11:31:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 395. [2024-11-22 11:31:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 278 states have (on average 1.3633093525179856) internal successors, (379), 278 states have internal predecessors, (379), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 11:31:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 603 transitions. [2024-11-22 11:31:07,321 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 603 transitions. Word has length 192 [2024-11-22 11:31:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:07,322 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 603 transitions. [2024-11-22 11:31:07,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 603 transitions. [2024-11-22 11:31:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-22 11:31:07,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:07,324 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:07,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:31:07,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:07,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2039739876, now seen corresponding path program 1 times [2024-11-22 11:31:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:07,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647135042] [2024-11-22 11:31:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:07,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647135042] [2024-11-22 11:31:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647135042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:31:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050462531] [2024-11-22 11:31:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:07,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:31:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:31:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:31:07,616 INFO L87 Difference]: Start difference. First operand 395 states and 603 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:08,328 INFO L93 Difference]: Finished difference Result 1288 states and 1966 transitions. [2024-11-22 11:31:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:31:08,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-22 11:31:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:08,334 INFO L225 Difference]: With dead ends: 1288 [2024-11-22 11:31:08,334 INFO L226 Difference]: Without dead ends: 950 [2024-11-22 11:31:08,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:31:08,337 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 620 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:08,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 717 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:31:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-22 11:31:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 529. [2024-11-22 11:31:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 383 states have (on average 1.3864229765013054) internal successors, (531), 383 states have internal predecessors, (531), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-22 11:31:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 811 transitions. [2024-11-22 11:31:08,419 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 811 transitions. Word has length 192 [2024-11-22 11:31:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:08,419 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 811 transitions. [2024-11-22 11:31:08,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 811 transitions. [2024-11-22 11:31:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-22 11:31:08,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:08,421 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:08,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:31:08,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:08,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2044511201, now seen corresponding path program 1 times [2024-11-22 11:31:08,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080917449] [2024-11-22 11:31:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:08,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:08,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080917449] [2024-11-22 11:31:08,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080917449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:08,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:08,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:31:08,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658713829] [2024-11-22 11:31:08,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:08,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:31:08,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:31:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:31:08,631 INFO L87 Difference]: Start difference. First operand 529 states and 811 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:08,943 INFO L93 Difference]: Finished difference Result 1450 states and 2227 transitions. [2024-11-22 11:31:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:31:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 193 [2024-11-22 11:31:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:08,948 INFO L225 Difference]: With dead ends: 1450 [2024-11-22 11:31:08,948 INFO L226 Difference]: Without dead ends: 984 [2024-11-22 11:31:08,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:31:08,950 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 166 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:08,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 449 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:31:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-22 11:31:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 982. [2024-11-22 11:31:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 720 states have (on average 1.3819444444444444) internal successors, (995), 720 states have internal predecessors, (995), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 11:31:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1499 transitions. [2024-11-22 11:31:09,084 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1499 transitions. Word has length 193 [2024-11-22 11:31:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:09,084 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1499 transitions. [2024-11-22 11:31:09,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1499 transitions. [2024-11-22 11:31:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-22 11:31:09,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:09,086 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:09,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:31:09,087 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:09,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2033965523, now seen corresponding path program 1 times [2024-11-22 11:31:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:09,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823073377] [2024-11-22 11:31:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:09,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823073377] [2024-11-22 11:31:09,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823073377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:09,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:09,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:31:09,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493925149] [2024-11-22 11:31:09,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:09,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:31:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:31:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:31:09,175 INFO L87 Difference]: Start difference. First operand 982 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:09,357 INFO L93 Difference]: Finished difference Result 1981 states and 3028 transitions. [2024-11-22 11:31:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:31:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2024-11-22 11:31:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:09,362 INFO L225 Difference]: With dead ends: 1981 [2024-11-22 11:31:09,362 INFO L226 Difference]: Without dead ends: 1062 [2024-11-22 11:31:09,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:31:09,365 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:09,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 293 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:31:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-11-22 11:31:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 982. [2024-11-22 11:31:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 720 states have (on average 1.3763888888888889) internal successors, (991), 720 states have internal predecessors, (991), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 11:31:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1495 transitions. [2024-11-22 11:31:09,480 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1495 transitions. Word has length 194 [2024-11-22 11:31:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:09,480 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1495 transitions. [2024-11-22 11:31:09,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1495 transitions. [2024-11-22 11:31:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-22 11:31:09,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:09,482 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:31:09,482 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:09,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 526559600, now seen corresponding path program 1 times [2024-11-22 11:31:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15273719] [2024-11-22 11:31:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-22 11:31:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15273719] [2024-11-22 11:31:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15273719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:31:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947572913] [2024-11-22 11:31:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:10,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:31:10,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:31:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:10,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 11:31:10,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:31:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:10,704 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:31:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947572913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:10,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:31:10,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-22 11:31:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22828666] [2024-11-22 11:31:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:10,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:31:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:31:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-22 11:31:10,705 INFO L87 Difference]: Start difference. First operand 982 states and 1495 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:11,225 INFO L93 Difference]: Finished difference Result 2645 states and 4031 transitions. [2024-11-22 11:31:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:31:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-22 11:31:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:11,234 INFO L225 Difference]: With dead ends: 2645 [2024-11-22 11:31:11,234 INFO L226 Difference]: Without dead ends: 1722 [2024-11-22 11:31:11,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-22 11:31:11,237 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 219 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:11,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1158 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:31:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-22 11:31:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1439. [2024-11-22 11:31:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1061 states have (on average 1.3600377002827522) internal successors, (1443), 1061 states have internal predecessors, (1443), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-22 11:31:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2171 transitions. [2024-11-22 11:31:11,464 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2171 transitions. Word has length 195 [2024-11-22 11:31:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:11,465 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 2171 transitions. [2024-11-22 11:31:11,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2171 transitions. [2024-11-22 11:31:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-22 11:31:11,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:11,469 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:11,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:31:11,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-22 11:31:11,671 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:11,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1083652873, now seen corresponding path program 1 times [2024-11-22 11:31:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990449937] [2024-11-22 11:31:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990449937] [2024-11-22 11:31:12,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990449937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:12,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:12,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:31:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525261145] [2024-11-22 11:31:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:12,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:31:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:31:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:31:12,228 INFO L87 Difference]: Start difference. First operand 1439 states and 2171 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:13,060 INFO L93 Difference]: Finished difference Result 3223 states and 4867 transitions. [2024-11-22 11:31:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:31:13,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-22 11:31:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:13,071 INFO L225 Difference]: With dead ends: 3223 [2024-11-22 11:31:13,071 INFO L226 Difference]: Without dead ends: 1847 [2024-11-22 11:31:13,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:31:13,075 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 313 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:13,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1083 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:31:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2024-11-22 11:31:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1491. [2024-11-22 11:31:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1113 states have (on average 1.3611859838274933) internal successors, (1515), 1113 states have internal predecessors, (1515), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-22 11:31:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2243 transitions. [2024-11-22 11:31:13,243 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2243 transitions. Word has length 195 [2024-11-22 11:31:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:13,244 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 2243 transitions. [2024-11-22 11:31:13,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2243 transitions. [2024-11-22 11:31:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 11:31:13,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:13,246 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:13,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:31:13,247 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:13,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1002259068, now seen corresponding path program 1 times [2024-11-22 11:31:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802119163] [2024-11-22 11:31:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:13,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-22 11:31:14,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802119163] [2024-11-22 11:31:14,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802119163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:31:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569331604] [2024-11-22 11:31:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:14,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:14,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:14,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:31:14,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:31:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:14,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 11:31:14,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:31:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:15,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:31:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569331604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:31:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2024-11-22 11:31:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562103053] [2024-11-22 11:31:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:15,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:31:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:31:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:31:15,104 INFO L87 Difference]: Start difference. First operand 1491 states and 2243 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:15,767 INFO L93 Difference]: Finished difference Result 3535 states and 5264 transitions. [2024-11-22 11:31:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:31:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-22 11:31:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:15,777 INFO L225 Difference]: With dead ends: 3535 [2024-11-22 11:31:15,777 INFO L226 Difference]: Without dead ends: 2107 [2024-11-22 11:31:15,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:31:15,782 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 494 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:15,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 744 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:31:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2024-11-22 11:31:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1609. [2024-11-22 11:31:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1231 states have (on average 1.3671811535337124) internal successors, (1683), 1231 states have internal predecessors, (1683), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-22 11:31:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2411 transitions. [2024-11-22 11:31:15,936 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2411 transitions. Word has length 196 [2024-11-22 11:31:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:15,937 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2411 transitions. [2024-11-22 11:31:15,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2411 transitions. [2024-11-22 11:31:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 11:31:15,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:15,939 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:15,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 11:31:16,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:16,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:16,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1466059987, now seen corresponding path program 1 times [2024-11-22 11:31:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296608007] [2024-11-22 11:31:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296608007] [2024-11-22 11:31:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296608007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:16,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:16,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:31:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41503112] [2024-11-22 11:31:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:16,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:31:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:16,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:31:16,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:31:16,412 INFO L87 Difference]: Start difference. First operand 1609 states and 2411 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:17,312 INFO L93 Difference]: Finished difference Result 4675 states and 7028 transitions. [2024-11-22 11:31:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:31:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-22 11:31:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:17,327 INFO L225 Difference]: With dead ends: 4675 [2024-11-22 11:31:17,327 INFO L226 Difference]: Without dead ends: 3125 [2024-11-22 11:31:17,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:31:17,331 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 288 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:17,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 795 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:31:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2024-11-22 11:31:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2250. [2024-11-22 11:31:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 1756 states have (on average 1.366742596810934) internal successors, (2400), 1756 states have internal predecessors, (2400), 476 states have call successors, (476), 17 states have call predecessors, (476), 17 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-22 11:31:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3352 transitions. [2024-11-22 11:31:17,548 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3352 transitions. Word has length 196 [2024-11-22 11:31:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:17,549 INFO L471 AbstractCegarLoop]: Abstraction has 2250 states and 3352 transitions. [2024-11-22 11:31:17,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3352 transitions. [2024-11-22 11:31:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 11:31:17,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:17,551 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:17,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:31:17,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:17,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 834762603, now seen corresponding path program 1 times [2024-11-22 11:31:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176435723] [2024-11-22 11:31:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:17,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176435723] [2024-11-22 11:31:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176435723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:18,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:31:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425784327] [2024-11-22 11:31:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:18,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:31:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:31:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:31:18,110 INFO L87 Difference]: Start difference. First operand 2250 states and 3352 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:19,190 INFO L93 Difference]: Finished difference Result 5051 states and 7532 transitions. [2024-11-22 11:31:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:31:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-22 11:31:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:19,203 INFO L225 Difference]: With dead ends: 5051 [2024-11-22 11:31:19,203 INFO L226 Difference]: Without dead ends: 2860 [2024-11-22 11:31:19,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:31:19,208 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 425 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:19,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1116 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:31:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-11-22 11:31:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2260. [2024-11-22 11:31:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1766 states have (on average 1.3669309173272932) internal successors, (2414), 1766 states have internal predecessors, (2414), 476 states have call successors, (476), 17 states have call predecessors, (476), 17 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-22 11:31:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3366 transitions. [2024-11-22 11:31:19,412 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3366 transitions. Word has length 196 [2024-11-22 11:31:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:19,412 INFO L471 AbstractCegarLoop]: Abstraction has 2260 states and 3366 transitions. [2024-11-22 11:31:19,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3366 transitions. [2024-11-22 11:31:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-22 11:31:19,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:19,415 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:19,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:31:19,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:19,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash -73851364, now seen corresponding path program 1 times [2024-11-22 11:31:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246762057] [2024-11-22 11:31:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2024-11-22 11:31:19,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:19,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246762057] [2024-11-22 11:31:19,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246762057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:31:19,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444679558] [2024-11-22 11:31:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:19,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:31:19,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:31:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:19,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:31:19,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:31:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2024-11-22 11:31:20,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:31:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2024-11-22 11:31:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444679558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:31:20,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:31:20,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-22 11:31:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982588261] [2024-11-22 11:31:20,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:31:20,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:31:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:31:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:31:20,390 INFO L87 Difference]: Start difference. First operand 2260 states and 3366 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 11:31:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:20,896 INFO L93 Difference]: Finished difference Result 3584 states and 5239 transitions. [2024-11-22 11:31:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 11:31:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2024-11-22 11:31:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:20,906 INFO L225 Difference]: With dead ends: 3584 [2024-11-22 11:31:20,906 INFO L226 Difference]: Without dead ends: 1383 [2024-11-22 11:31:20,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2024-11-22 11:31:20,911 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 425 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:20,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 431 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:31:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-11-22 11:31:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1309. [2024-11-22 11:31:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1029 states have (on average 1.3313896987366376) internal successors, (1370), 1029 states have internal predecessors, (1370), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 11:31:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1874 transitions. [2024-11-22 11:31:21,094 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1874 transitions. Word has length 196 [2024-11-22 11:31:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:21,095 INFO L471 AbstractCegarLoop]: Abstraction has 1309 states and 1874 transitions. [2024-11-22 11:31:21,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 11:31:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1874 transitions. [2024-11-22 11:31:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-22 11:31:21,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:21,097 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:21,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:31:21,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:21,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:21,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -287003035, now seen corresponding path program 1 times [2024-11-22 11:31:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851380952] [2024-11-22 11:31:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:21,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851380952] [2024-11-22 11:31:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851380952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:21,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:21,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:31:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432356134] [2024-11-22 11:31:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:21,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:31:21,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:31:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:31:21,766 INFO L87 Difference]: Start difference. First operand 1309 states and 1874 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:22,418 INFO L93 Difference]: Finished difference Result 2768 states and 3952 transitions. [2024-11-22 11:31:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:31:22,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2024-11-22 11:31:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:22,425 INFO L225 Difference]: With dead ends: 2768 [2024-11-22 11:31:22,425 INFO L226 Difference]: Without dead ends: 1526 [2024-11-22 11:31:22,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:31:22,428 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 284 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:22,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 627 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:31:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2024-11-22 11:31:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1327. [2024-11-22 11:31:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1047 states have (on average 1.3285577841451768) internal successors, (1391), 1047 states have internal predecessors, (1391), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 11:31:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1895 transitions. [2024-11-22 11:31:22,594 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1895 transitions. Word has length 197 [2024-11-22 11:31:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:22,594 INFO L471 AbstractCegarLoop]: Abstraction has 1327 states and 1895 transitions. [2024-11-22 11:31:22,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1895 transitions. [2024-11-22 11:31:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-22 11:31:22,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:22,596 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:22,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:31:22,596 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:22,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1975946777, now seen corresponding path program 1 times [2024-11-22 11:31:22,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:22,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148476222] [2024-11-22 11:31:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-22 11:31:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:31:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148476222] [2024-11-22 11:31:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148476222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:31:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:31:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:31:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713223992] [2024-11-22 11:31:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:31:22,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:31:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:31:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:31:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:31:22,990 INFO L87 Difference]: Start difference. First operand 1327 states and 1895 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:31:23,927 INFO L93 Difference]: Finished difference Result 2692 states and 3838 transitions. [2024-11-22 11:31:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:31:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2024-11-22 11:31:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:31:23,935 INFO L225 Difference]: With dead ends: 2692 [2024-11-22 11:31:23,935 INFO L226 Difference]: Without dead ends: 1432 [2024-11-22 11:31:23,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:31:23,938 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 298 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:31:23,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 821 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:31:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2024-11-22 11:31:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2024-11-22 11:31:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1033 states have (on average 1.3262342691190707) internal successors, (1370), 1033 states have internal predecessors, (1370), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-22 11:31:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1874 transitions. [2024-11-22 11:31:24,099 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1874 transitions. Word has length 197 [2024-11-22 11:31:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:31:24,100 INFO L471 AbstractCegarLoop]: Abstraction has 1313 states and 1874 transitions. [2024-11-22 11:31:24,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-22 11:31:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1874 transitions. [2024-11-22 11:31:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-22 11:31:24,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:31:24,101 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:31:24,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 11:31:24,101 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:31:24,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:31:24,102 INFO L85 PathProgramCache]: Analyzing trace with hash -929929131, now seen corresponding path program 1 times [2024-11-22 11:31:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:31:24,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010317977] [2024-11-22 11:31:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:31:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:31:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186831128] [2024-11-22 11:31:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:31:24,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:31:24,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:31:24,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:31:24,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:31:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:31:24,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 11:31:24,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:31:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 947 proven. 180 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-22 11:31:26,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:31:41,632 WARN L286 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 28 DAG size of output: 24 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-22 11:31:57,109 WARN L286 SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 30 DAG size of output: 26 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)