./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:52:08,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:52:08,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:52:08,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:52:08,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:52:08,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:52:08,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:52:08,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:52:08,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:52:08,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:52:08,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:52:08,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:52:08,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:52:08,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:52:08,279 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:52:08,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:52:08,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:52:08,280 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:52:08,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:52:08,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:52:08,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:52:08,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:52:08,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:52:08,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:52:08,282 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:52:08,283 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:52:08,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:52:08,283 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:52:08,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:52:08,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:52:08,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:52:08,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:52:08,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:52:08,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:52:08,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:52:08,285 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:52:08,286 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:52:08,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:52:08,286 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:52:08,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:52:08,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:52:08,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:52:08,288 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 [2024-10-10 21:52:08,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:52:08,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:52:08,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:52:08,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:52:08,548 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:52:08,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-10-10 21:52:10,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:52:10,190 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:52:10,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-10-10 21:52:10,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fc42dc478/454dd189c68647209f694c1e47fb0ad2/FLAGd6d45ad06 [2024-10-10 21:52:10,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fc42dc478/454dd189c68647209f694c1e47fb0ad2 [2024-10-10 21:52:10,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:52:10,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:52:10,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:52:10,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:52:10,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:52:10,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7371f5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10, skipping insertion in model container [2024-10-10 21:52:10,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:52:10,444 WARN L248 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-examples/standard_partition_ground-2.i[820,833] [2024-10-10 21:52:10,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:52:10,472 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:52:10,485 WARN L248 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-examples/standard_partition_ground-2.i[820,833] [2024-10-10 21:52:10,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:52:10,510 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:52:10,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10 WrapperNode [2024-10-10 21:52:10,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:52:10,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:52:10,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:52:10,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:52:10,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,544 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-10-10 21:52:10,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:52:10,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:52:10,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:52:10,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:52:10,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,570 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-10-10 21:52:10,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:52:10,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:52:10,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:52:10,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:52:10,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (1/1) ... [2024-10-10 21:52:10,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:52:10,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:10,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:52:10,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:52:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:52:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:52:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:52:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:52:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 21:52:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:52:10,745 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:52:10,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:52:10,901 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-10 21:52:10,901 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:52:10,946 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:52:10,948 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-10 21:52:10,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:52:10 BoogieIcfgContainer [2024-10-10 21:52:10,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:52:10,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:52:10,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:52:10,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:52:10,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:52:10" (1/3) ... [2024-10-10 21:52:10,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db8f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:52:10, skipping insertion in model container [2024-10-10 21:52:10,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:52:10" (2/3) ... [2024-10-10 21:52:10,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db8f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:52:10, skipping insertion in model container [2024-10-10 21:52:10,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:52:10" (3/3) ... [2024-10-10 21:52:10,965 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-2.i [2024-10-10 21:52:10,986 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:52:10,986 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:52:11,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:52:11,061 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;@3617b038, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:52:11,063 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:52:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:52:11,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:11,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:11,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:11,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 215789761, now seen corresponding path program 1 times [2024-10-10 21:52:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:11,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875943670] [2024-10-10 21:52:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:11,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:52:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875943670] [2024-10-10 21:52:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875943670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:52:11,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:52:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:52:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281193594] [2024-10-10 21:52:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:52:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:52:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:11,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:52:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:52:11,318 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:11,353 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2024-10-10 21:52:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:52:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 21:52:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:11,364 INFO L225 Difference]: With dead ends: 35 [2024-10-10 21:52:11,364 INFO L226 Difference]: Without dead ends: 17 [2024-10-10 21:52:11,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:52:11,373 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:11,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-10 21:52:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-10 21:52:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-10 21:52:11,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2024-10-10 21:52:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:11,421 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-10 21:52:11,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-10-10 21:52:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-10 21:52:11,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:11,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:11,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:52:11,424 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 647037981, now seen corresponding path program 1 times [2024-10-10 21:52:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:11,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673621127] [2024-10-10 21:52:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:52:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673621127] [2024-10-10 21:52:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673621127] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394491026] [2024-10-10 21:52:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:11,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:11,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:11,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:11,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:52:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:11,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:52:11,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:11,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:52:11,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394491026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:52:11,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:52:11,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 21:52:11,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128359254] [2024-10-10 21:52:11,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:52:11,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:52:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:11,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:52:11,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:52:11,687 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:11,732 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-10-10 21:52:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:52:11,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-10 21:52:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:11,733 INFO L225 Difference]: With dead ends: 33 [2024-10-10 21:52:11,733 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 21:52:11,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:52:11,735 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:11,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 21:52:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2024-10-10 21:52:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-10-10 21:52:11,743 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2024-10-10 21:52:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:11,743 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-10-10 21:52:11,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-10-10 21:52:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-10 21:52:11,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:11,744 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:11,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:52:11,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:11,949 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:11,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:11,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1752948195, now seen corresponding path program 1 times [2024-10-10 21:52:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:11,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510226000] [2024-10-10 21:52:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:52:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510226000] [2024-10-10 21:52:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510226000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:12,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881534362] [2024-10-10 21:52:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:12,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:12,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:52:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:12,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:52:12,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:52:12,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:52:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881534362] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:12,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:52:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595592176] [2024-10-10 21:52:12,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:12,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:52:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:52:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:52:12,186 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:12,209 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-10-10 21:52:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:52:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-10 21:52:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:12,210 INFO L225 Difference]: With dead ends: 38 [2024-10-10 21:52:12,210 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:52:12,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:52:12,212 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:12,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:52:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-10 21:52:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-10 21:52:12,217 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2024-10-10 21:52:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:12,217 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-10 21:52:12,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-10 21:52:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-10 21:52:12,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:12,218 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:12,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:52:12,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:12,419 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:12,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1726744113, now seen corresponding path program 2 times [2024-10-10 21:52:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905001359] [2024-10-10 21:52:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-10 21:52:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:12,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905001359] [2024-10-10 21:52:12,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905001359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:12,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748012203] [2024-10-10 21:52:12,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:52:12,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:12,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:12,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:52:12,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:52:12,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:12,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:52:12,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:52:12,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:52:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748012203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:12,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:12,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2024-10-10 21:52:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18289817] [2024-10-10 21:52:12,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:12,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:52:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:52:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:52:12,813 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:12,993 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-10-10 21:52:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:52:12,994 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-10 21:52:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:12,995 INFO L225 Difference]: With dead ends: 54 [2024-10-10 21:52:12,995 INFO L226 Difference]: Without dead ends: 38 [2024-10-10 21:52:12,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-10-10 21:52:12,998 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:12,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-10 21:52:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-10-10 21:52:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-10-10 21:52:13,012 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 20 [2024-10-10 21:52:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:13,013 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-10-10 21:52:13,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-10-10 21:52:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-10 21:52:13,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:13,016 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:13,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:52:13,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:13,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:13,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1883384405, now seen corresponding path program 3 times [2024-10-10 21:52:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057533924] [2024-10-10 21:52:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:52:13,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:13,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057533924] [2024-10-10 21:52:13,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057533924] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:13,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219260250] [2024-10-10 21:52:13,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:52:13,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:13,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:13,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:13,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:52:13,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:52:13,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:13,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:52:13,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-10 21:52:13,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-10 21:52:13,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219260250] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:13,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:13,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-10-10 21:52:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099487558] [2024-10-10 21:52:13,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:13,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 21:52:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 21:52:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:52:13,748 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:13,977 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2024-10-10 21:52:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-10 21:52:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-10 21:52:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:13,980 INFO L225 Difference]: With dead ends: 81 [2024-10-10 21:52:13,980 INFO L226 Difference]: Without dead ends: 59 [2024-10-10 21:52:13,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-10-10 21:52:13,982 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 64 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:13,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-10 21:52:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-10 21:52:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2024-10-10 21:52:13,995 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 32 [2024-10-10 21:52:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:13,995 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2024-10-10 21:52:13,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2024-10-10 21:52:13,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-10 21:52:13,998 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:13,998 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:14,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:52:14,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:14,199 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:14,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash -468310051, now seen corresponding path program 4 times [2024-10-10 21:52:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:14,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866809241] [2024-10-10 21:52:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:14,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-10 21:52:14,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866809241] [2024-10-10 21:52:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866809241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609059536] [2024-10-10 21:52:14,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:52:14,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:14,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:14,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:52:14,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:52:14,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:14,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:52:14,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-10 21:52:14,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-10 21:52:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609059536] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:14,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 27 [2024-10-10 21:52:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792971735] [2024-10-10 21:52:14,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:14,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-10 21:52:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-10 21:52:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-10 21:52:14,980 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:15,292 INFO L93 Difference]: Finished difference Result 154 states and 216 transitions. [2024-10-10 21:52:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-10 21:52:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-10 21:52:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:15,294 INFO L225 Difference]: With dead ends: 154 [2024-10-10 21:52:15,294 INFO L226 Difference]: Without dead ends: 108 [2024-10-10 21:52:15,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2024-10-10 21:52:15,298 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:15,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 73 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:52:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-10 21:52:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-10 21:52:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 107 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 139 transitions. [2024-10-10 21:52:15,318 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 139 transitions. Word has length 57 [2024-10-10 21:52:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:15,319 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 139 transitions. [2024-10-10 21:52:15,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 139 transitions. [2024-10-10 21:52:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-10 21:52:15,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:15,321 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:15,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:52:15,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:15,522 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:15,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1663214571, now seen corresponding path program 5 times [2024-10-10 21:52:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384655006] [2024-10-10 21:52:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-10-10 21:52:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384655006] [2024-10-10 21:52:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384655006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50127063] [2024-10-10 21:52:16,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:52:16,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:16,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:16,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:16,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:52:21,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-10 21:52:21,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:21,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:52:21,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-10-10 21:52:21,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-10-10 21:52:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50127063] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:21,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 45 [2024-10-10 21:52:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030541181] [2024-10-10 21:52:21,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:21,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-10 21:52:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-10 21:52:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 21:52:21,884 INFO L87 Difference]: Start difference. First operand 108 states and 139 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:22,375 INFO L93 Difference]: Finished difference Result 299 states and 425 transitions. [2024-10-10 21:52:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-10 21:52:22,381 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-10 21:52:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:22,382 INFO L225 Difference]: With dead ends: 299 [2024-10-10 21:52:22,386 INFO L226 Difference]: Without dead ends: 205 [2024-10-10 21:52:22,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1185, Invalid=2121, Unknown=0, NotChecked=0, Total=3306 [2024-10-10 21:52:22,388 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 416 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:22,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 120 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 21:52:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-10-10 21:52:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-10-10 21:52:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.3137254901960784) internal successors, (268), 204 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 268 transitions. [2024-10-10 21:52:22,410 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 268 transitions. Word has length 106 [2024-10-10 21:52:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:22,412 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 268 transitions. [2024-10-10 21:52:22,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 268 transitions. [2024-10-10 21:52:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-10-10 21:52:22,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:22,417 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:22,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:52:22,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 21:52:22,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:22,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2048898461, now seen corresponding path program 6 times [2024-10-10 21:52:22,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:22,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418110047] [2024-10-10 21:52:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418110047] [2024-10-10 21:52:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418110047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066058052] [2024-10-10 21:52:23,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:52:23,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:23,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:23,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:23,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:52:23,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-10 21:52:23,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:23,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 21:52:23,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:23,888 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 15 treesize of output 7 [2024-10-10 21:52:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 59 proven. 59 refuted. 0 times theorem prover too weak. 2643 trivial. 0 not checked. [2024-10-10 21:52:23,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:24,133 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-10 21:52:24,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 12 [2024-10-10 21:52:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 2643 trivial. 0 not checked. [2024-10-10 21:52:24,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066058052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:24,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:24,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 24 [2024-10-10 21:52:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877875526] [2024-10-10 21:52:24,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:24,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-10 21:52:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-10 21:52:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-10-10 21:52:24,172 INFO L87 Difference]: Start difference. First operand 205 states and 268 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:24,520 INFO L93 Difference]: Finished difference Result 583 states and 770 transitions. [2024-10-10 21:52:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-10 21:52:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-10-10 21:52:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:24,522 INFO L225 Difference]: With dead ends: 583 [2024-10-10 21:52:24,523 INFO L226 Difference]: Without dead ends: 393 [2024-10-10 21:52:24,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2024-10-10 21:52:24,534 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:24,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 132 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-10-10 21:52:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 298. [2024-10-10 21:52:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.3164983164983164) internal successors, (391), 297 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 391 transitions. [2024-10-10 21:52:24,567 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 391 transitions. Word has length 203 [2024-10-10 21:52:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:24,567 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 391 transitions. [2024-10-10 21:52:24,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 391 transitions. [2024-10-10 21:52:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-10 21:52:24,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:24,576 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:24,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:52:24,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:24,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:24,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 354820457, now seen corresponding path program 1 times [2024-10-10 21:52:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011442132] [2024-10-10 21:52:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011442132] [2024-10-10 21:52:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011442132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302164374] [2024-10-10 21:52:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:25,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:25,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:25,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:52:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:25,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:52:25,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:25,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:26,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302164374] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:26,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-10-10 21:52:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338915838] [2024-10-10 21:52:26,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:26,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-10 21:52:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-10 21:52:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 21:52:26,089 INFO L87 Difference]: Start difference. First operand 298 states and 391 transitions. Second operand has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:26,133 INFO L93 Difference]: Finished difference Result 596 states and 797 transitions. [2024-10-10 21:52:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-10 21:52:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-10-10 21:52:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:26,135 INFO L225 Difference]: With dead ends: 596 [2024-10-10 21:52:26,135 INFO L226 Difference]: Without dead ends: 314 [2024-10-10 21:52:26,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 21:52:26,137 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:26,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-10 21:52:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-10-10 21:52:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 313 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 407 transitions. [2024-10-10 21:52:26,162 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 407 transitions. Word has length 204 [2024-10-10 21:52:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:26,162 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 407 transitions. [2024-10-10 21:52:26,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 407 transitions. [2024-10-10 21:52:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-10 21:52:26,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:26,165 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:26,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:52:26,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:26,370 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:26,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:26,370 INFO L85 PathProgramCache]: Analyzing trace with hash 12817257, now seen corresponding path program 2 times [2024-10-10 21:52:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238856943] [2024-10-10 21:52:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238856943] [2024-10-10 21:52:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238856943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934664112] [2024-10-10 21:52:27,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:52:27,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:27,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:27,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:52:27,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:52:27,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:27,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-10 21:52:27,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:28,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934664112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:29,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:29,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2024-10-10 21:52:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632168052] [2024-10-10 21:52:29,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:29,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-10-10 21:52:29,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-10-10 21:52:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-10-10 21:52:29,353 INFO L87 Difference]: Start difference. First operand 314 states and 407 transitions. Second operand has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:29,438 INFO L93 Difference]: Finished difference Result 628 states and 845 transitions. [2024-10-10 21:52:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-10 21:52:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2024-10-10 21:52:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:29,440 INFO L225 Difference]: With dead ends: 628 [2024-10-10 21:52:29,440 INFO L226 Difference]: Without dead ends: 346 [2024-10-10 21:52:29,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-10-10 21:52:29,444 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:29,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-10-10 21:52:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-10-10 21:52:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.272463768115942) internal successors, (439), 345 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 439 transitions. [2024-10-10 21:52:29,458 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 439 transitions. Word has length 220 [2024-10-10 21:52:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:29,458 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 439 transitions. [2024-10-10 21:52:29,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 439 transitions. [2024-10-10 21:52:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-10 21:52:29,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:29,461 INFO L215 NwaCegarLoop]: trace histogram [62, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:29,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:52:29,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:29,666 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:29,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 9598825, now seen corresponding path program 3 times [2024-10-10 21:52:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757722395] [2024-10-10 21:52:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:29,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:52:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757722395] [2024-10-10 21:52:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757722395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309492040] [2024-10-10 21:52:33,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:52:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:33,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:33,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:52:33,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:52:33,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:33,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-10 21:52:33,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:33,282 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 23 treesize of output 1 [2024-10-10 21:52:33,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:52:33,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 15 [2024-10-10 21:52:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 150 proven. 88 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2024-10-10 21:52:33,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4623 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2024-10-10 21:52:34,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309492040] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:34,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:34,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 10, 9] total 77 [2024-10-10 21:52:34,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781819337] [2024-10-10 21:52:34,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:34,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-10-10 21:52:34,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-10-10 21:52:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2191, Invalid=3661, Unknown=0, NotChecked=0, Total=5852 [2024-10-10 21:52:34,351 INFO L87 Difference]: Start difference. First operand 346 states and 439 transitions. Second operand has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:38,360 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] [2024-10-10 21:52:42,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-10 21:52:47,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-10 21:52:57,073 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] [2024-10-10 21:52:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:57,291 INFO L93 Difference]: Finished difference Result 1016 states and 1292 transitions. [2024-10-10 21:52:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-10-10 21:52:57,291 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-10-10 21:52:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:57,296 INFO L225 Difference]: With dead ends: 1016 [2024-10-10 21:52:57,296 INFO L226 Difference]: Without dead ends: 734 [2024-10-10 21:52:57,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 489 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3466 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6944, Invalid=15108, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:52:57,302 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 250 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 82 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:57,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 88 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 244 Invalid, 12 Unknown, 0 Unchecked, 20.1s Time] [2024-10-10 21:52:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-10-10 21:52:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 446. [2024-10-10 21:52:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.2853932584269663) internal successors, (572), 445 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 572 transitions. [2024-10-10 21:52:57,333 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 572 transitions. Word has length 252 [2024-10-10 21:52:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:57,333 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 572 transitions. [2024-10-10 21:52:57,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 572 transitions. [2024-10-10 21:52:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-10 21:52:57,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:57,337 INFO L215 NwaCegarLoop]: trace histogram [63, 30, 30, 30, 30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:57,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 21:52:57,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 21:52:57,538 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:57,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1984663325, now seen corresponding path program 4 times [2024-10-10 21:52:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983631580] [2024-10-10 21:52:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:53:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2024-10-10 21:53:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:53:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983631580] [2024-10-10 21:53:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983631580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:53:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323993143] [2024-10-10 21:53:00,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:53:00,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:53:00,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:53:00,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:53:00,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 21:53:02,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:53:02,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:53:02,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-10 21:53:02,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:53:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2024-10-10 21:53:03,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:53:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4686 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2024-10-10 21:53:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323993143] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:53:05,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:53:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 32, 32] total 127 [2024-10-10 21:53:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188932297] [2024-10-10 21:53:05,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:53:05,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-10-10 21:53:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:53:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-10-10 21:53:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2024-10-10 21:53:05,641 INFO L87 Difference]: Start difference. First operand 446 states and 572 transitions. Second operand has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:53:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:53:08,628 INFO L93 Difference]: Finished difference Result 1406 states and 1978 transitions. [2024-10-10 21:53:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-10-10 21:53:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-10-10 21:53:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:53:08,633 INFO L225 Difference]: With dead ends: 1406 [2024-10-10 21:53:08,633 INFO L226 Difference]: Without dead ends: 1025 [2024-10-10 21:53:08,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5922 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=12352, Invalid=24320, Unknown=0, NotChecked=0, Total=36672 [2024-10-10 21:53:08,636 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 720 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 21:53:08,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 234 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 21:53:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-10-10 21:53:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 831. [2024-10-10 21:53:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.3072289156626506) internal successors, (1085), 830 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:53:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1085 transitions. [2024-10-10 21:53:08,685 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1085 transitions. Word has length 253 [2024-10-10 21:53:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:53:08,686 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1085 transitions. [2024-10-10 21:53:08,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.109375) internal successors, (270), 127 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:53:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1085 transitions. [2024-10-10 21:53:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-10 21:53:08,689 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:53:08,689 INFO L215 NwaCegarLoop]: trace histogram [64, 62, 62, 62, 62, 62, 60, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:53:08,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 21:53:08,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 21:53:08,890 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:53:08,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:53:08,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1996450859, now seen corresponding path program 5 times [2024-10-10 21:53:08,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:53:08,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613734814] [2024-10-10 21:53:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:53:08,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:53:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:53:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13550 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 11470 trivial. 0 not checked. [2024-10-10 21:53:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:53:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613734814] [2024-10-10 21:53:12,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613734814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:53:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87929028] [2024-10-10 21:53:12,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:53:12,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:53:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:53:12,796 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:53:12,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process