./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/max.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97795e7b99ddd869ecccb7f865206a167342b52333873684a94abd35acf6650e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:01:16,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:01:16,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:01:16,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:01:16,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:01:16,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:01:16,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:01:16,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:01:16,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:01:16,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:01:16,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:01:16,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:01:16,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:01:16,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:01:16,299 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:01:16,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:01:16,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:01:16,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:01:16,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:01:16,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:01:16,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:01:16,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:01:16,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:01:16,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:01:16,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:01:16,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:01:16,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:01:16,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:01:16,307 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:01:16,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:01:16,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:01:16,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:01:16,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:01:16,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:01:16,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:01:16,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:01:16,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:01:16,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:01:16,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:01:16,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:01:16,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:01:16,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:01:16,312 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97795e7b99ddd869ecccb7f865206a167342b52333873684a94abd35acf6650e [2024-11-09 18:01:16,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:01:16,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:01:16,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:01:16,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:01:16,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:01:16,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max.i [2024-11-09 18:01:18,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:01:18,316 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:01:18,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max.i [2024-11-09 18:01:18,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3a02578/9f635fcc18974b79bfbfa028403f8614/FLAGeb5250fdf [2024-11-09 18:01:18,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3a02578/9f635fcc18974b79bfbfa028403f8614 [2024-11-09 18:01:18,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:01:18,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:01:18,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:01:18,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:01:18,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:01:18,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e571ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18, skipping insertion in model container [2024-11-09 18:01:18,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:01:18,550 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max.i[1295,1308] [2024-11-09 18:01:18,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:01:18,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:01:18,581 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max.i[1295,1308] [2024-11-09 18:01:18,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:01:18,606 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:01:18,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18 WrapperNode [2024-11-09 18:01:18,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:01:18,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:01:18,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:01:18,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:01:18,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,643 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2024-11-09 18:01:18,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:01:18,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:01:18,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:01:18,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:01:18,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,672 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 6, 10]. 56 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 4 writes are split as follows [0, 0, 4]. [2024-11-09 18:01:18,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,680 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:01:18,691 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:01:18,691 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:01:18,692 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:01:18,694 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (1/1) ... [2024-11-09 18:01:18,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:01:18,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:18,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:01:18,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:01:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:01:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-09 18:01:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-09 18:01:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:01:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:01:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:01:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:01:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:01:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:01:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:01:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:01:18,878 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:01:18,883 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:01:19,056 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-09 18:01:19,057 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:01:19,072 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:01:19,073 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:01:19,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:01:19 BoogieIcfgContainer [2024-11-09 18:01:19,073 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:01:19,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:01:19,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:01:19,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:01:19,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:01:18" (1/3) ... [2024-11-09 18:01:19,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ad9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:01:19, skipping insertion in model container [2024-11-09 18:01:19,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:01:18" (2/3) ... [2024-11-09 18:01:19,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ad9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:01:19, skipping insertion in model container [2024-11-09 18:01:19,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:01:19" (3/3) ... [2024-11-09 18:01:19,085 INFO L112 eAbstractionObserver]: Analyzing ICFG max.i [2024-11-09 18:01:19,107 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:01:19,107 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:01:19,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:01:19,191 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;@6dd47c65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:01:19,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:01:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 18:01:19,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:19,209 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:19,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:19,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1596640387, now seen corresponding path program 1 times [2024-11-09 18:01:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387191469] [2024-11-09 18:01:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 18:01:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 18:01:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:01:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:01:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387191469] [2024-11-09 18:01:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387191469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:19,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:01:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853149365] [2024-11-09 18:01:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:19,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:01:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:01:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:01:19,534 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:19,557 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2024-11-09 18:01:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:01:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-09 18:01:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:19,571 INFO L225 Difference]: With dead ends: 52 [2024-11-09 18:01:19,571 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 18:01:19,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:01:19,578 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:19,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 18:01:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 18:01:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 18:01:19,617 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2024-11-09 18:01:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:19,618 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 18:01:19,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 18:01:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 18:01:19,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:19,638 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:19,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:01:19,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:19,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash 607223510, now seen corresponding path program 1 times [2024-11-09 18:01:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280277255] [2024-11-09 18:01:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 18:01:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 18:01:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 18:01:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:01:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280277255] [2024-11-09 18:01:19,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280277255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:19,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439365762] [2024-11-09 18:01:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:19,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:19,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:01:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:01:20,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:01:20,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:01:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439365762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:20,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:01:20,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-09 18:01:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263191848] [2024-11-09 18:01:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:20,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:01:20,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:20,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:01:20,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:01:20,204 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:20,267 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-11-09 18:01:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:01:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-09 18:01:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:20,268 INFO L225 Difference]: With dead ends: 46 [2024-11-09 18:01:20,269 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:01:20,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:01:20,271 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:20,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:01:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-09 18:01:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 18:01:20,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 32 [2024-11-09 18:01:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:20,282 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 18:01:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 18:01:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:01:20,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:20,284 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:20,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:01:20,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:20,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:20,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1365918680, now seen corresponding path program 1 times [2024-11-09 18:01:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436290275] [2024-11-09 18:01:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 18:01:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 18:01:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 18:01:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436290275] [2024-11-09 18:01:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436290275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:20,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:01:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861241339] [2024-11-09 18:01:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:20,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:01:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:01:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:20,713 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:20,755 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-09 18:01:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:01:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-09 18:01:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:20,757 INFO L225 Difference]: With dead ends: 43 [2024-11-09 18:01:20,758 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:01:20,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:20,760 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:20,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:01:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 18:01:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-09 18:01:20,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 44 [2024-11-09 18:01:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:20,772 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-09 18:01:20,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-09 18:01:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 18:01:20,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:20,775 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:20,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:01:20,775 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:20,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:20,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1066454041, now seen corresponding path program 1 times [2024-11-09 18:01:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803032105] [2024-11-09 18:01:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:20,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 18:01:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-09 18:01:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:01:20,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803032105] [2024-11-09 18:01:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803032105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892494418] [2024-11-09 18:01:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:20,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:20,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:20,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:01:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:21,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:01:21,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 18:01:21,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:01:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892494418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:21,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-09 18:01:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193719186] [2024-11-09 18:01:21,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:21,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:01:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:01:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:01:21,312 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:01:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:21,400 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2024-11-09 18:01:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:01:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-11-09 18:01:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:21,402 INFO L225 Difference]: With dead ends: 56 [2024-11-09 18:01:21,402 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 18:01:21,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:01:21,404 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:21,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 63 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:01:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 18:01:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-09 18:01:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 18:01:21,412 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2024-11-09 18:01:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:21,412 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 18:01:21,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:01:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 18:01:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 18:01:21,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:21,417 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:21,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:01:21,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 18:01:21,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:21,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash -306184037, now seen corresponding path program 2 times [2024-11-09 18:01:21,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689138102] [2024-11-09 18:01:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:22,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 18:01:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:22,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:01:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:23,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-09 18:01:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 18:01:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689138102] [2024-11-09 18:01:23,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689138102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039245210] [2024-11-09 18:01:23,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:01:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:23,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:23,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:01:23,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:01:23,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:23,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 18:01:23,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:23,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-09 18:01:24,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:24,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 18:01:24,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:24,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2024-11-09 18:01:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:01:24,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:33,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039245210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:33,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 18:01:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24] total 34 [2024-11-09 18:01:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038140135] [2024-11-09 18:01:33,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:33,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 18:01:33,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 18:01:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1675, Unknown=2, NotChecked=0, Total=1892 [2024-11-09 18:01:33,395 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 34 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 18:01:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:36,067 INFO L93 Difference]: Finished difference Result 233 states and 296 transitions. [2024-11-09 18:01:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-09 18:01:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 58 [2024-11-09 18:01:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:36,072 INFO L225 Difference]: With dead ends: 233 [2024-11-09 18:01:36,072 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 18:01:36,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1171, Invalid=8927, Unknown=2, NotChecked=0, Total=10100 [2024-11-09 18:01:36,077 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 203 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:36,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 397 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:01:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 18:01:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2024-11-09 18:01:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 118 states have internal predecessors, (142), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-09 18:01:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2024-11-09 18:01:36,108 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 58 [2024-11-09 18:01:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:36,108 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2024-11-09 18:01:36,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 18:01:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2024-11-09 18:01:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 18:01:36,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:36,112 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:36,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:01:36,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:36,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash 44615900, now seen corresponding path program 1 times [2024-11-09 18:01:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992090760] [2024-11-09 18:01:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat