./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/bAnd5.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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:37:21,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:37:21,127 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:37:21,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:37:21,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:37:21,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:37:21,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:37:21,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:37:21,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:37:21,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:37:21,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:37:21,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:37:21,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:37:21,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:37:21,167 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:37:21,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:37:21,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:37:21,168 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:37:21,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:37:21,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:37:21,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:37:21,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:37:21,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:37:21,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:37:21,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:37:21,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:37:21,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:37:21,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:37:21,172 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:37:21,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:37:21,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:37:21,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:37:21,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:37:21,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:37:21,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:37:21,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:37:21,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:37:21,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:37:21,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:37:21,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:37:21,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:37:21,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:37:21,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2024-11-16 02:37:21,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:37:21,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:37:21,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:37:21,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:37:21,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:37:21,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2024-11-16 02:37:23,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:37:23,281 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:37:23,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2024-11-16 02:37:23,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9b25aff/cfecbc4e724e45c0b971ec2ecc0f920c/FLAG161611d61 [2024-11-16 02:37:23,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9b25aff/cfecbc4e724e45c0b971ec2ecc0f920c [2024-11-16 02:37:23,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:37:23,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:37:23,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:37:23,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:37:23,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:37:23,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4a41d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23, skipping insertion in model container [2024-11-16 02:37:23,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:37:23,563 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/array-crafted/bAnd5.i[1369,1382] [2024-11-16 02:37:23,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:37:23,579 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:37:23,605 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/array-crafted/bAnd5.i[1369,1382] [2024-11-16 02:37:23,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:37:23,630 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:37:23,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23 WrapperNode [2024-11-16 02:37:23,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:37:23,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:37:23,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:37:23,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:37:23,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,670 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-11-16 02:37:23,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:37:23,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:37:23,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:37:23,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:37:23,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,704 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 8, 11]. 52 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-16 02:37:23,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,711 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:37:23,716 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:37:23,717 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:37:23,717 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:37:23,718 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (1/1) ... [2024-11-16 02:37:23,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:37:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:23,754 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) [2024-11-16 02:37:23,756 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 [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:37:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:37:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:37:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2024-11-16 02:37:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2024-11-16 02:37:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:37:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:37:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:37:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:37:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:37:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:37:23,866 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:37:23,868 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:37:24,025 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-16 02:37:24,025 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:37:24,053 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:37:24,054 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:37:24,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:37:24 BoogieIcfgContainer [2024-11-16 02:37:24,054 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:37:24,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:37:24,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:37:24,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:37:24,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:37:23" (1/3) ... [2024-11-16 02:37:24,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89fffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:37:24, skipping insertion in model container [2024-11-16 02:37:24,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:23" (2/3) ... [2024-11-16 02:37:24,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89fffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:37:24, skipping insertion in model container [2024-11-16 02:37:24,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:37:24" (3/3) ... [2024-11-16 02:37:24,064 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2024-11-16 02:37:24,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:37:24,083 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:37:24,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:37:24,188 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;@4a8cb703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:37:24,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:37:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:37:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:37:24,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:24,199 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:24,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:24,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1799413446, now seen corresponding path program 1 times [2024-11-16 02:37:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415590686] [2024-11-16 02:37:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 02:37:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 02:37:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 02:37:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:37:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:24,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415590686] [2024-11-16 02:37:24,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415590686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:24,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:37:24,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:37:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973513139] [2024-11-16 02:37:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:24,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:37:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:37:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:37:24,452 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 02:37:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:24,479 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2024-11-16 02:37:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:37:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-16 02:37:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:24,489 INFO L225 Difference]: With dead ends: 61 [2024-11-16 02:37:24,489 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:37:24,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:37:24,495 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:24,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:37:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 02:37:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:37:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-16 02:37:24,530 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 30 [2024-11-16 02:37:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:24,531 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-16 02:37:24,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 02:37:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-16 02:37:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:37:24,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:24,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:24,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:37:24,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:24,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:24,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1653503063, now seen corresponding path program 1 times [2024-11-16 02:37:24,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:24,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508986684] [2024-11-16 02:37:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 02:37:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 02:37:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:37:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:37:24,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508986684] [2024-11-16 02:37:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508986684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:24,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:37:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:37:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723320454] [2024-11-16 02:37:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:24,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:37:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:37:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:37:24,748 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 02:37:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:24,779 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-16 02:37:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:37:24,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-16 02:37:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:24,781 INFO L225 Difference]: With dead ends: 53 [2024-11-16 02:37:24,781 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:37:24,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:37:24,784 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:24,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:37:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 02:37:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:37:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-16 02:37:24,793 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 35 [2024-11-16 02:37:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:24,795 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-16 02:37:24,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 02:37:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-16 02:37:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 02:37:24,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:24,798 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:24,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:37:24,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:24,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1730175464, now seen corresponding path program 1 times [2024-11-16 02:37:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573878518] [2024-11-16 02:37:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:37:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 02:37:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 02:37:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:37:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573878518] [2024-11-16 02:37:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573878518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849850503] [2024-11-16 02:37:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:24,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:24,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:24,966 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) [2024-11-16 02:37:24,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:37:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:37:25,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:37:25,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:37:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849850503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:25,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-16 02:37:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266117784] [2024-11-16 02:37:25,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:25,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 02:37:25,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 02:37:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:37:25,255 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 02:37:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:25,360 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2024-11-16 02:37:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:37:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2024-11-16 02:37:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:25,363 INFO L225 Difference]: With dead ends: 61 [2024-11-16 02:37:25,363 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 02:37:25,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:37:25,365 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:25,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 95 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:37:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 02:37:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-11-16 02:37:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:37:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-16 02:37:25,371 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 37 [2024-11-16 02:37:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:25,372 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-16 02:37:25,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 02:37:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-16 02:37:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 02:37:25,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:25,373 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:25,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:37:25,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:25,574 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:25,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -744689687, now seen corresponding path program 1 times [2024-11-16 02:37:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:25,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972330937] [2024-11-16 02:37:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:37:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 02:37:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 02:37:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:37:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972330937] [2024-11-16 02:37:25,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972330937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:25,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990790606] [2024-11-16 02:37:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:25,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:25,792 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) [2024-11-16 02:37:25,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:37:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:25,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:37:25,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 02:37:25,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:37:25,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990790606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:25,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:37:25,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-16 02:37:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789509479] [2024-11-16 02:37:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:25,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:37:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:37:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 02:37:25,976 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 02:37:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:26,023 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-11-16 02:37:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:37:26,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2024-11-16 02:37:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:26,024 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:37:26,025 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:37:26,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 02:37:26,026 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:26,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:37:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 02:37:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:37:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-16 02:37:26,037 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 51 [2024-11-16 02:37:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:26,038 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-16 02:37:26,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 02:37:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-16 02:37:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 02:37:26,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:26,042 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:26,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:37:26,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:37:26,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:26,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash -557802006, now seen corresponding path program 1 times [2024-11-16 02:37:26,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:26,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929694370] [2024-11-16 02:37:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:26,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:37:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:26,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 02:37:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:37:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:37:27,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929694370] [2024-11-16 02:37:27,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929694370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024196615] [2024-11-16 02:37:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:27,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:27,196 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) [2024-11-16 02:37:27,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:37:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 02:37:27,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 02:37:27,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:37:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024196615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:28,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13] total 20 [2024-11-16 02:37:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839419633] [2024-11-16 02:37:28,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:37:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:37:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:37:28,048 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:37:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:28,186 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2024-11-16 02:37:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:37:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2024-11-16 02:37:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:28,189 INFO L225 Difference]: With dead ends: 90 [2024-11-16 02:37:28,190 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 02:37:28,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:37:28,193 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:28,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 411 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:37:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 02:37:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2024-11-16 02:37:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-16 02:37:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2024-11-16 02:37:28,209 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 53 [2024-11-16 02:37:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:28,210 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2024-11-16 02:37:28,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:37:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2024-11-16 02:37:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:37:28,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:28,213 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:28,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:37:28,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:28,414 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:28,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1672365980, now seen corresponding path program 1 times [2024-11-16 02:37:28,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:28,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227505452] [2024-11-16 02:37:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:29,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:37:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:29,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 02:37:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:29,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:37:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:37:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227505452] [2024-11-16 02:37:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227505452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522673680] [2024-11-16 02:37:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:29,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:29,699 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) [2024-11-16 02:37:29,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:37:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:29,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-16 02:37:29,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:29,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:37:30,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:37:30,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-16 02:37:30,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:37:30,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-16 02:37:30,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:37:30,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-11-16 02:37:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:37:31,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:32,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 156 [2024-11-16 02:37:32,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:37:32,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 107 [2024-11-16 02:37:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522673680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:32,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 18] total 54 [2024-11-16 02:37:32,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498317513] [2024-11-16 02:37:32,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:32,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 02:37:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 02:37:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2546, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 02:37:32,346 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 54 states, 51 states have (on average 2.588235294117647) internal successors, (132), 50 states have internal predecessors, (132), 8 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-16 02:37:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:35,046 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2024-11-16 02:37:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:37:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 2.588235294117647) internal successors, (132), 50 states have internal predecessors, (132), 8 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 54 [2024-11-16 02:37:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:35,050 INFO L225 Difference]: With dead ends: 269 [2024-11-16 02:37:35,050 INFO L226 Difference]: Without dead ends: 223 [2024-11-16 02:37:35,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2272 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=933, Invalid=6899, Unknown=0, NotChecked=0, Total=7832 [2024-11-16 02:37:35,055 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 365 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:35,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 615 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:37:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-16 02:37:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 185. [2024-11-16 02:37:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 165 states have internal predecessors, (190), 16 states have call successors, (16), 4 states have call predecessors, (16), 11 states have return successors, (55), 15 states have call predecessors, (55), 16 states have call successors, (55) [2024-11-16 02:37:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2024-11-16 02:37:35,106 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 54 [2024-11-16 02:37:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:35,106 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2024-11-16 02:37:35,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 2.588235294117647) internal successors, (132), 50 states have internal predecessors, (132), 8 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-16 02:37:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2024-11-16 02:37:35,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:37:35,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:35,117 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:35,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:35,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:35,317 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:35,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1138241904, now seen corresponding path program 2 times [2024-11-16 02:37:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223755321] [2024-11-16 02:37:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:35,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:37:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:36,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 02:37:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:36,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 02:37:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:37:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223755321] [2024-11-16 02:37:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223755321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948297301] [2024-11-16 02:37:36,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:37:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:36,253 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) [2024-11-16 02:37:36,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:37:36,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:37:36,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:36,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 02:37:36,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:36,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:37:36,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:37:36,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:37:36,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-11-16 02:37:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:37:36,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 02:37:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948297301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:37,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:37,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 10] total 35 [2024-11-16 02:37:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365242965] [2024-11-16 02:37:37,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:37,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 02:37:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 02:37:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:37:37,283 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 02:37:41,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:37:45,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:37:49,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:37:53,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:37:57,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:01,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:05,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:07,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:11,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:13,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:17,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:18,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:38:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:38:18,759 INFO L93 Difference]: Finished difference Result 399 states and 527 transitions. [2024-11-16 02:38:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:38:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 54 [2024-11-16 02:38:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:38:18,765 INFO L225 Difference]: With dead ends: 399 [2024-11-16 02:38:18,766 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 02:38:18,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=344, Invalid=2206, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:38:18,772 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 159 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 77 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:38:18,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 653 Invalid, 12 Unknown, 0 Unchecked, 41.0s Time] [2024-11-16 02:38:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 02:38:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2024-11-16 02:38:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 180 states have (on average 1.2) internal successors, (216), 188 states have internal predecessors, (216), 17 states have call successors, (17), 6 states have call predecessors, (17), 13 states have return successors, (48), 16 states have call predecessors, (48), 17 states have call successors, (48) [2024-11-16 02:38:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 281 transitions. [2024-11-16 02:38:18,829 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 281 transitions. Word has length 54 [2024-11-16 02:38:18,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:38:18,829 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 281 transitions. [2024-11-16 02:38:18,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 02:38:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 281 transitions. [2024-11-16 02:38:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:38:18,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:38:18,833 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:38:18,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:38:19,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:19,033 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:38:19,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:38:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1060289480, now seen corresponding path program 1 times [2024-11-16 02:38:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:38:19,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380378333] [2024-11-16 02:38:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:38:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:38:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:21,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:38:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:21,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 02:38:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:21,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:38:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 02:38:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:38:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380378333] [2024-11-16 02:38:21,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380378333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:38:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293342683] [2024-11-16 02:38:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:38:21,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:38:21,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:38:21,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:38:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:21,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-16 02:38:21,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:38:21,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:38:21,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:38:22,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2024-11-16 02:38:22,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 65 [2024-11-16 02:38:23,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:38:23,212 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-16 02:38:23,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 72 [2024-11-16 02:38:23,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 76 [2024-11-16 02:38:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:38:23,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:38:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293342683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:38:25,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 02:38:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 43 [2024-11-16 02:38:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213537303] [2024-11-16 02:38:25,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 02:38:25,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 02:38:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:38:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 02:38:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2263, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:38:25,187 INFO L87 Difference]: Start difference. First operand 211 states and 281 transitions. Second operand has 43 states, 40 states have (on average 2.075) internal successors, (83), 36 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:38:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:38:27,021 INFO L93 Difference]: Finished difference Result 328 states and 462 transitions. [2024-11-16 02:38:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 02:38:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.075) internal successors, (83), 36 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 56 [2024-11-16 02:38:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:38:27,025 INFO L225 Difference]: With dead ends: 328 [2024-11-16 02:38:27,028 INFO L226 Difference]: Without dead ends: 324 [2024-11-16 02:38:27,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 02:38:27,031 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 93 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:38:27,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 402 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:38:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-16 02:38:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 265. [2024-11-16 02:38:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 226 states have (on average 1.2300884955752212) internal successors, (278), 238 states have internal predecessors, (278), 21 states have call successors, (21), 6 states have call predecessors, (21), 17 states have return successors, (75), 20 states have call predecessors, (75), 21 states have call successors, (75) [2024-11-16 02:38:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 374 transitions. [2024-11-16 02:38:27,088 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 374 transitions. Word has length 56 [2024-11-16 02:38:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:38:27,089 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 374 transitions. [2024-11-16 02:38:27,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.075) internal successors, (83), 36 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:38:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 374 transitions. [2024-11-16 02:38:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:38:27,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:38:27,091 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:38:27,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:38:27,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:27,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:38:27,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:38:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -112758019, now seen corresponding path program 3 times [2024-11-16 02:38:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:38:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888152928] [2024-11-16 02:38:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:38:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:38:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:27,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 02:38:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:27,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 02:38:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:27,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:38:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:38:27,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:38:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888152928] [2024-11-16 02:38:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888152928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:38:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022651231] [2024-11-16 02:38:27,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:38:27,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:27,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:38:27,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:38:27,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:38:27,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:38:27,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:38:27,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:38:27,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:38:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:38:27,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:38:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:38:27,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022651231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:38:27,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:38:27,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-16 02:38:27,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145565796] [2024-11-16 02:38:27,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:38:27,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:38:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:38:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:38:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:38:27,755 INFO L87 Difference]: Start difference. First operand 265 states and 374 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 02:38:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:38:27,964 INFO L93 Difference]: Finished difference Result 556 states and 786 transitions. [2024-11-16 02:38:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:38:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2024-11-16 02:38:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:38:27,967 INFO L225 Difference]: With dead ends: 556 [2024-11-16 02:38:27,967 INFO L226 Difference]: Without dead ends: 438 [2024-11-16 02:38:27,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:38:27,969 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:38:27,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 249 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:38:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-16 02:38:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 388. [2024-11-16 02:38:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 338 states have (on average 1.2307692307692308) internal successors, (416), 353 states have internal predecessors, (416), 26 states have call successors, (26), 9 states have call predecessors, (26), 23 states have return successors, (102), 25 states have call predecessors, (102), 26 states have call successors, (102) [2024-11-16 02:38:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 544 transitions. [2024-11-16 02:38:28,021 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 544 transitions. Word has length 56 [2024-11-16 02:38:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:38:28,021 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 544 transitions. [2024-11-16 02:38:28,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 02:38:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 544 transitions. [2024-11-16 02:38:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 02:38:28,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:38:28,024 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:38:28,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:38:28,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:28,225 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:38:28,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:38:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 945291224, now seen corresponding path program 1 times [2024-11-16 02:38:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:38:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155967504] [2024-11-16 02:38:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:38:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:38:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:28,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 02:38:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:28,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 02:38:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:28,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:38:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 02:38:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:38:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155967504] [2024-11-16 02:38:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155967504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:38:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354596027] [2024-11-16 02:38:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:38:29,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:38:29,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:38:29,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:38:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:29,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 02:38:29,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:38:29,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:38:29,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:38:29,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-16 02:38:29,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:38:29,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2024-11-16 02:38:29,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:38:29,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 18 [2024-11-16 02:38:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:38:29,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:38:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 02:38:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354596027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:38:46,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:38:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 12] total 38 [2024-11-16 02:38:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018963360] [2024-11-16 02:38:46,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:38:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 02:38:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:38:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 02:38:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1230, Unknown=3, NotChecked=0, Total=1406 [2024-11-16 02:38:46,102 INFO L87 Difference]: Start difference. First operand 388 states and 544 transitions. Second operand has 38 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 36 states have internal predecessors, (123), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9)