./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-lopstr16/sum_multi_array.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/array-lopstr16/sum_multi_array.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.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 26771b88cbebb1b541d9a1b404bc6cc4b00331d67b70950095eb210c62a0a606 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 18:55:13,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:55:13,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:55:13,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:55:13,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:55:13,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:55:13,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:55:13,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:55:13,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:55:13,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:55:13,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:55:13,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:55:13,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:55:13,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:55:13,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:55:13,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:55:13,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:55:13,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:55:13,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:55:13,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:55:13,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:55:13,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:55:13,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:55:13,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:55:13,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:55:13,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:55:13,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:55:13,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:55:13,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:55:13,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:55:13,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:55:13,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:55:13,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:55:13,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:55:13,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:55:13,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:55:13,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:55:13,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:55:13,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:55:13,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:55:13,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:55:13,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:55:13,361 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:55:13,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:55:13,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:55:13,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:55:13,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:55:13,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:55:13,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:55:13,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:55:13,364 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:55:13,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:55:13,365 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:55:13,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:55:13,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:55:13,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:55:13,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:55:13,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:55:13,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:55:13,366 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:55:13,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:55:13,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:55:13,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:55:13,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:55:13,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:55:13,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:55:13,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:55:13,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:55:13,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:55:13,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:55:13,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:55:13,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:55:13,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:55:13,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:55:13,369 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:55:13,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:55:13,370 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:55:13,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26771b88cbebb1b541d9a1b404bc6cc4b00331d67b70950095eb210c62a0a606 [2023-02-15 18:55:13,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:55:13,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:55:13,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:55:13,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:55:13,660 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:55:13,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-lopstr16/sum_multi_array.i [2023-02-15 18:55:14,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:55:14,938 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:55:14,939 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/sum_multi_array.i [2023-02-15 18:55:14,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df5f6a3e/b3e3d4711f9f44fc96d1b717cdcf14c8/FLAG12c760b3c [2023-02-15 18:55:14,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df5f6a3e/b3e3d4711f9f44fc96d1b717cdcf14c8 [2023-02-15 18:55:14,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:55:14,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:55:14,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:55:14,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:55:14,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:55:14,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:55:14" (1/1) ... [2023-02-15 18:55:14,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd521e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:14, skipping insertion in model container [2023-02-15 18:55:14,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:55:14" (1/1) ... [2023-02-15 18:55:14,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:55:14,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:55:15,096 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/array-lopstr16/sum_multi_array.i[808,821] [2023-02-15 18:55:15,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:55:27,497 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:55:27,505 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/array-lopstr16/sum_multi_array.i[808,821] [2023-02-15 18:55:27,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:55:27,525 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:55:27,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27 WrapperNode [2023-02-15 18:55:27,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:55:27,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:55:27,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:55:27,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:55:27,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,553 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-02-15 18:55:27,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:55:27,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:55:27,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:55:27,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:55:27,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,572 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:55:27,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:55:27,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:55:27,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:55:27,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (1/1) ... [2023-02-15 18:55:27,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:55:27,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:55:27,626 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) [2023-02-15 18:55:27,648 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 [2023-02-15 18:55:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:55:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:55:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:55:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:55:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:55:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:55:27,740 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:55:27,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:55:27,924 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:55:27,929 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:55:27,944 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 18:55:27,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:55:27 BoogieIcfgContainer [2023-02-15 18:55:27,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:55:27,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:55:27,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:55:27,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:55:27,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:55:14" (1/3) ... [2023-02-15 18:55:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64615f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:55:27, skipping insertion in model container [2023-02-15 18:55:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:55:27" (2/3) ... [2023-02-15 18:55:27,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64615f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:55:27, skipping insertion in model container [2023-02-15 18:55:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:55:27" (3/3) ... [2023-02-15 18:55:27,954 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_multi_array.i [2023-02-15 18:55:27,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:55:27,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:55:28,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:55:28,032 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;@10131b5a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:55:28,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:55:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:55:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 18:55:28,041 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:28,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:28,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2023-02-15 18:55:28,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916183215] [2023-02-15 18:55:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:55:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:55:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916183215] [2023-02-15 18:55:28,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916183215] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:55:28,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:55:28,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 18:55:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242004525] [2023-02-15 18:55:28,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:55:28,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 18:55:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:55:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 18:55:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:55:28,279 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-15 18:55:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:55:28,320 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2023-02-15 18:55:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 18:55:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-02-15 18:55:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:55:28,328 INFO L225 Difference]: With dead ends: 42 [2023-02-15 18:55:28,329 INFO L226 Difference]: Without dead ends: 24 [2023-02-15 18:55:28,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:55:28,333 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:55:28,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:55:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-15 18:55:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2023-02-15 18:55:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-02-15 18:55:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-02-15 18:55:28,360 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2023-02-15 18:55:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:55:28,360 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-02-15 18:55:28,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-15 18:55:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-02-15 18:55:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 18:55:28,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:28,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:28,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 18:55:28,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:28,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2023-02-15 18:55:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354457289] [2023-02-15 18:55:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:55:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:55:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354457289] [2023-02-15 18:55:28,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354457289] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:55:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825092035] [2023-02-15 18:55:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:28,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:55:28,507 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) [2023-02-15 18:55:28,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 18:55:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:28,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 18:55:28,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:55:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:55:28,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:55:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:55:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825092035] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:55:28,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:55:28,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 18:55:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179744872] [2023-02-15 18:55:28,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:55:28,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 18:55:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:55:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 18:55:28,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:55:28,627 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2023-02-15 18:55:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:55:28,693 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2023-02-15 18:55:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 18:55:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 13 [2023-02-15 18:55:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:55:28,695 INFO L225 Difference]: With dead ends: 58 [2023-02-15 18:55:28,695 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 18:55:28,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:55:28,696 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:55:28,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 29 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:55:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 18:55:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2023-02-15 18:55:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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) [2023-02-15 18:55:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-02-15 18:55:28,703 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2023-02-15 18:55:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:55:28,703 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-02-15 18:55:28,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2023-02-15 18:55:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-02-15 18:55:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 18:55:28,704 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:28,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:28,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 18:55:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:28,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -318070331, now seen corresponding path program 2 times [2023-02-15 18:55:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:28,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090104054] [2023-02-15 18:55:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 18:55:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:55:29,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090104054] [2023-02-15 18:55:29,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090104054] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:55:29,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444633633] [2023-02-15 18:55:29,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:55:29,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:29,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:55:29,193 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) [2023-02-15 18:55:29,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 18:55:29,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:55:29,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:55:29,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 18:55:29,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:55:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 18:55:29,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:55:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 18:55:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444633633] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:55:29,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:55:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-15 18:55:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490974612] [2023-02-15 18:55:29,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:55:29,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 18:55:29,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:55:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 18:55:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-15 18:55:29,446 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2023-02-15 18:55:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:55:29,599 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2023-02-15 18:55:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 18:55:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 25 [2023-02-15 18:55:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:55:29,603 INFO L225 Difference]: With dead ends: 124 [2023-02-15 18:55:29,604 INFO L226 Difference]: Without dead ends: 107 [2023-02-15 18:55:29,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-15 18:55:29,607 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:55:29,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 50 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:55:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-15 18:55:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 52. [2023-02-15 18:55:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:55:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2023-02-15 18:55:29,626 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 25 [2023-02-15 18:55:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:55:29,627 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2023-02-15 18:55:29,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2023-02-15 18:55:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2023-02-15 18:55:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 18:55:29,629 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:29,630 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:29,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 18:55:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 18:55:29,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash 407457837, now seen corresponding path program 3 times [2023-02-15 18:55:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:29,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381135744] [2023-02-15 18:55:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 18:55:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:55:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381135744] [2023-02-15 18:55:30,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381135744] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:55:30,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741004156] [2023-02-15 18:55:30,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:55:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:30,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:55:30,157 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) [2023-02-15 18:55:30,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 18:55:31,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 18:55:31,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:55:31,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 18:55:31,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:55:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 18:55:31,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:55:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 18:55:32,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741004156] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:55:32,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:55:32,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-15 18:55:32,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124986808] [2023-02-15 18:55:32,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:55:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 18:55:32,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:55:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 18:55:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-15 18:55:32,122 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2023-02-15 18:55:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:55:32,517 INFO L93 Difference]: Finished difference Result 256 states and 283 transitions. [2023-02-15 18:55:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 18:55:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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 49 [2023-02-15 18:55:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:55:32,522 INFO L225 Difference]: With dead ends: 256 [2023-02-15 18:55:32,522 INFO L226 Difference]: Without dead ends: 227 [2023-02-15 18:55:32,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-15 18:55:32,525 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 335 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 18:55:32,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 101 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 18:55:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-02-15 18:55:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 100. [2023-02-15 18:55:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 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) [2023-02-15 18:55:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2023-02-15 18:55:32,551 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 49 [2023-02-15 18:55:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:55:32,554 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2023-02-15 18:55:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2023-02-15 18:55:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2023-02-15 18:55:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 18:55:32,558 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:32,558 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:32,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 18:55:32,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:32,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash -500972291, now seen corresponding path program 4 times [2023-02-15 18:55:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:32,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196889183] [2023-02-15 18:55:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:32,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:55:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-15 18:55:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:55:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196889183] [2023-02-15 18:55:33,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196889183] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:55:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393433780] [2023-02-15 18:55:33,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 18:55:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:55:33,587 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) [2023-02-15 18:55:33,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 18:55:33,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 18:55:33,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:55:33,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 18:55:33,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:55:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-15 18:55:33,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:55:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-15 18:55:34,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393433780] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:55:34,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:55:34,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-15 18:55:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502595959] [2023-02-15 18:55:34,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:55:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-15 18:55:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:55:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-15 18:55:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 18:55:34,513 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 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) [2023-02-15 18:55:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:55:35,153 INFO L93 Difference]: Finished difference Result 520 states and 571 transitions. [2023-02-15 18:55:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-15 18:55:35,153 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 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 97 [2023-02-15 18:55:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:55:35,155 INFO L225 Difference]: With dead ends: 520 [2023-02-15 18:55:35,156 INFO L226 Difference]: Without dead ends: 467 [2023-02-15 18:55:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 18:55:35,158 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 920 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 18:55:35,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 195 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 18:55:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-15 18:55:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 196. [2023-02-15 18:55:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 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) [2023-02-15 18:55:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2023-02-15 18:55:35,169 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 97 [2023-02-15 18:55:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:55:35,169 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2023-02-15 18:55:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 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) [2023-02-15 18:55:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2023-02-15 18:55:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-02-15 18:55:35,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:55:35,175 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:55:35,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 18:55:35,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:55:35,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:55:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:55:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1630342813, now seen corresponding path program 5 times [2023-02-15 18:55:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:55:35,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799674229] [2023-02-15 18:55:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:55:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:55:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat