./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/insertion_sort-1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/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/loops/insertion_sort-1-2.c -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.graphml --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 36d1103e69366c6d9110aa7e24b0c4765120510facc121d7623fcf9373a67e96 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:56:58,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:56:58,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:56:58,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:56:58,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:56:58,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:56:58,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:56:58,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:56:58,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:56:58,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:56:58,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:56:58,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:56:58,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:56:58,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:56:58,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:56:58,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:56:58,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:56:58,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:56:58,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:56:58,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:56:58,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:56:58,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:56:58,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:56:58,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:56:58,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:56:58,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:56:58,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:56:58,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:56:58,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:56:58,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:56:58,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:56:58,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:56:58,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:56:58,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:56:58,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:56:58,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:56:58,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:56:58,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:56:58,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:56:58,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:56:58,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:56:58,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:56:58,410 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:56:58,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:56:58,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:56:58,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:56:58,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:56:58,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:56:58,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:56:58,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:56:58,417 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:56:58,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:56:58,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:56:58,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:56:58,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:56:58,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:56:58,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:56:58,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:56:58,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:56:58,421 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:56:58,421 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36d1103e69366c6d9110aa7e24b0c4765120510facc121d7623fcf9373a67e96 [2023-02-17 00:56:58,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:56:58,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:56:58,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:56:58,622 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:56:58,622 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:56:58,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/insertion_sort-1-2.c [2023-02-17 00:56:59,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:56:59,719 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:56:59,719 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-1-2.c [2023-02-17 00:56:59,723 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fd6f92f/cea656edb3a74e398b04f64daac83af2/FLAGff2d9a298 [2023-02-17 00:56:59,732 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fd6f92f/cea656edb3a74e398b04f64daac83af2 [2023-02-17 00:56:59,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:56:59,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:56:59,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:56:59,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:56:59,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:56:59,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e681e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59, skipping insertion in model container [2023-02-17 00:56:59,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:56:59,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:56:59,863 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-1-2.c[330,343] [2023-02-17 00:56:59,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:56:59,890 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:56:59,899 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-1-2.c[330,343] [2023-02-17 00:56:59,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:56:59,926 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:56:59,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59 WrapperNode [2023-02-17 00:56:59,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:56:59,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:56:59,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:56:59,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:56:59,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,958 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-02-17 00:56:59,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:56:59,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:56:59,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:56:59,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:56:59,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:56:59,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:56:59,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:56:59,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:56:59,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (1/1) ... [2023-02-17 00:56:59,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:56:59,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:57:00,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 00:57:00,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 00:57:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:57:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:57:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 00:57:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 00:57:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:57:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:57:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 00:57:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:57:00,105 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:57:00,107 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:57:00,282 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:57:00,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:57:00,286 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-17 00:57:00,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:57:00 BoogieIcfgContainer [2023-02-17 00:57:00,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:57:00,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:57:00,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:57:00,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:57:00,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:56:59" (1/3) ... [2023-02-17 00:57:00,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ab6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:57:00, skipping insertion in model container [2023-02-17 00:57:00,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:56:59" (2/3) ... [2023-02-17 00:57:00,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ab6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:57:00, skipping insertion in model container [2023-02-17 00:57:00,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:57:00" (3/3) ... [2023-02-17 00:57:00,309 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort-1-2.c [2023-02-17 00:57:00,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:57:00,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:57:00,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:57:00,377 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@15369789, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:57:00,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:57:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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) [2023-02-17 00:57:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 00:57:00,384 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:00,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:00,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1491357889, now seen corresponding path program 1 times [2023-02-17 00:57:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:00,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144795631] [2023-02-17 00:57:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:00,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144795631] [2023-02-17 00:57:00,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144795631] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:57:00,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:57:00,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:57:00,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055336163] [2023-02-17 00:57:00,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:57:00,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:57:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:57:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:57:00,571 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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 2 states, 2 states have (on average 5.0) 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) [2023-02-17 00:57:00,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:00,586 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2023-02-17 00:57:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:57:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) 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 [2023-02-17 00:57:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:00,592 INFO L225 Difference]: With dead ends: 45 [2023-02-17 00:57:00,593 INFO L226 Difference]: Without dead ends: 21 [2023-02-17 00:57:00,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:57:00,599 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2023-02-17 00:57:00,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:57:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-17 00:57:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-17 00:57:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2023-02-17 00:57:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-02-17 00:57:00,623 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2023-02-17 00:57:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:00,623 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-02-17 00:57:00,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) 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) [2023-02-17 00:57:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-02-17 00:57:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 00:57:00,624 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:00,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:00,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:57:00,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:00,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1773554617, now seen corresponding path program 1 times [2023-02-17 00:57:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:00,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832076529] [2023-02-17 00:57:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:00,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832076529] [2023-02-17 00:57:00,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832076529] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:57:00,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:57:00,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 00:57:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506275194] [2023-02-17 00:57:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:57:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:57:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:57:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:57:00,859 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-02-17 00:57:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:00,921 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-02-17 00:57:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:57:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2023-02-17 00:57:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:00,922 INFO L225 Difference]: With dead ends: 37 [2023-02-17 00:57:00,922 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 00:57:00,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:57:00,923 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:57:00,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:57:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 00:57:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2023-02-17 00:57:00,926 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) [2023-02-17 00:57:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-02-17 00:57:00,926 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2023-02-17 00:57:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:00,927 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-02-17 00:57:00,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-02-17 00:57:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-02-17 00:57:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:57:00,927 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:00,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:57:00,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash 385530252, now seen corresponding path program 1 times [2023-02-17 00:57:00,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:00,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515282067] [2023-02-17 00:57:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:01,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515282067] [2023-02-17 00:57:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515282067] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:57:01,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:57:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 00:57:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419325532] [2023-02-17 00:57:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:57:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:57:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:57:01,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:57:01,051 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-17 00:57:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:01,100 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-02-17 00:57:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:57:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-02-17 00:57:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:01,102 INFO L225 Difference]: With dead ends: 41 [2023-02-17 00:57:01,103 INFO L226 Difference]: Without dead ends: 24 [2023-02-17 00:57:01,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:57:01,107 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:57:01,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:57:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-17 00:57:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-17 00:57:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 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) [2023-02-17 00:57:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-17 00:57:01,113 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2023-02-17 00:57:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:01,114 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-17 00:57:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-17 00:57:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-17 00:57:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:57:01,115 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:01,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:57:01,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1021685782, now seen corresponding path program 1 times [2023-02-17 00:57:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:01,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942184665] [2023-02-17 00:57:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:01,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942184665] [2023-02-17 00:57:01,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942184665] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:57:01,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627714073] [2023-02-17 00:57:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:57:01,252 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) [2023-02-17 00:57:01,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:57:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:01,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 00:57:01,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:57:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:01,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:57:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:01,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627714073] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:57:01,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:57:01,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-02-17 00:57:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806461671] [2023-02-17 00:57:01,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:57:01,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 00:57:01,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 00:57:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:57:01,450 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2023-02-17 00:57:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:01,503 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2023-02-17 00:57:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:57:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 18 [2023-02-17 00:57:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:01,505 INFO L225 Difference]: With dead ends: 50 [2023-02-17 00:57:01,505 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 00:57:01,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:57:01,510 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:57:01,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:57:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 00:57:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-02-17 00:57:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2023-02-17 00:57:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-02-17 00:57:01,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2023-02-17 00:57:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:01,520 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-02-17 00:57:01,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2023-02-17 00:57:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-02-17 00:57:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:57:01,521 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:01,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:01,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:57:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:01,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash -441596216, now seen corresponding path program 2 times [2023-02-17 00:57:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:01,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903424188] [2023-02-17 00:57:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:01,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903424188] [2023-02-17 00:57:02,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903424188] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:57:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426684925] [2023-02-17 00:57:02,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:57:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:57:02,350 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) [2023-02-17 00:57:02,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:57:02,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:57:02,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:57:02,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-17 00:57:02,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:57:02,546 INFO L350 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 29 treesize of output 28 [2023-02-17 00:57:02,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:57:02,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 44 [2023-02-17 00:57:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:57:02,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:57:02,700 INFO L350 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 53 treesize of output 47 [2023-02-17 00:57:02,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:57:02,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 155 [2023-02-17 00:57:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:57:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426684925] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:57:02,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:57:02,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 25 [2023-02-17 00:57:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415277267] [2023-02-17 00:57:02,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:57:02,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-17 00:57:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-17 00:57:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-02-17 00:57:02,804 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2023-02-17 00:57:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:03,334 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2023-02-17 00:57:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-17 00:57:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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 [2023-02-17 00:57:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:03,335 INFO L225 Difference]: With dead ends: 98 [2023-02-17 00:57:03,335 INFO L226 Difference]: Without dead ends: 83 [2023-02-17 00:57:03,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=479, Invalid=1683, Unknown=0, NotChecked=0, Total=2162 [2023-02-17 00:57:03,336 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:57:03,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 152 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 00:57:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-17 00:57:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 39. [2023-02-17 00:57:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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) [2023-02-17 00:57:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-02-17 00:57:03,342 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 20 [2023-02-17 00:57:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:03,342 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-02-17 00:57:03,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2023-02-17 00:57:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-02-17 00:57:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:57:03,343 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:03,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:03,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:57:03,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:03,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1096856990, now seen corresponding path program 1 times [2023-02-17 00:57:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:03,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845502135] [2023-02-17 00:57:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:57:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:03,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845502135] [2023-02-17 00:57:03,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845502135] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:57:03,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776528908] [2023-02-17 00:57:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:03,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:03,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:57:03,651 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) [2023-02-17 00:57:03,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 00:57:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:03,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 00:57:03,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:57:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:57:03,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:57:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:57:03,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776528908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:57:03,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:57:03,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-02-17 00:57:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614056214] [2023-02-17 00:57:03,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:57:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 00:57:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:57:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 00:57:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-17 00:57:03,877 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-02-17 00:57:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:57:03,986 INFO L93 Difference]: Finished difference Result 123 states and 157 transitions. [2023-02-17 00:57:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:57:03,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 24 [2023-02-17 00:57:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:57:03,987 INFO L225 Difference]: With dead ends: 123 [2023-02-17 00:57:03,987 INFO L226 Difference]: Without dead ends: 87 [2023-02-17 00:57:03,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-02-17 00:57:03,988 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 106 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:57:03,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 173 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:57:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-17 00:57:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2023-02-17 00:57:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 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) [2023-02-17 00:57:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2023-02-17 00:57:03,996 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 24 [2023-02-17 00:57:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:57:03,996 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2023-02-17 00:57:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-02-17 00:57:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2023-02-17 00:57:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 00:57:03,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:57:03,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:57:04,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 00:57:04,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:04,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:57:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:57:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1110592866, now seen corresponding path program 1 times [2023-02-17 00:57:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:57:04,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361945174] [2023-02-17 00:57:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:57:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:57:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:57:04,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361945174] [2023-02-17 00:57:04,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361945174] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:57:04,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995822477] [2023-02-17 00:57:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:57:04,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:57:04,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:57:04,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:57:04,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 00:57:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:57:04,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-17 00:57:04,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:57:04,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 42 treesize of output 33 [2023-02-17 00:57:04,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:57:04,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 132 [2023-02-17 00:57:04,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:57:04,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 487 treesize of output 2620