./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/veris.c_sendmail_tTflag_arr_one_loop.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b996bc637c6bc3c4292d2ff0f03466af19f11d8e .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/veris.c_sendmail_tTflag_arr_one_loop.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b996bc637c6bc3c4292d2ff0f03466af19f11d8e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:12:40,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:12:40,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:12:40,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:12:40,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:12:40,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:12:40,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:12:40,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:12:40,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:12:40,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:12:40,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:12:40,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:12:40,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:12:40,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:12:40,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:12:40,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:12:40,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:12:40,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:12:40,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:12:40,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:12:40,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:12:40,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:12:40,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:12:40,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:12:40,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:12:40,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:12:40,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:12:40,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:12:40,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:12:40,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:12:40,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:12:40,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:12:40,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:12:40,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:12:40,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:12:40,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:12:40,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:12:40,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:12:40,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:12:40,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:12:40,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:12:40,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:12:40,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:12:40,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:12:40,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:12:40,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:12:40,387 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:12:40,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:12:40,388 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:12:40,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:12:40,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:12:40,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:12:40,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:12:40,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:12:40,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:12:40,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:12:40,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:12:40,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:12:40,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:12:40,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:12:40,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:12:40,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:12:40,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:12:40,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:40,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:12:40,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:12:40,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:12:40,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:12:40,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:12:40,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:12:40,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:12:40,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> b996bc637c6bc3c4292d2ff0f03466af19f11d8e [2020-07-28 18:12:40,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:12:40,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:12:40,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:12:40,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:12:40,741 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:12:40,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:40,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47359ed89/c00453e51b3544a796eee0b04c8a1f3d/FLAG4cb86ddeb [2020-07-28 18:12:41,305 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:12:41,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:41,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47359ed89/c00453e51b3544a796eee0b04c8a1f3d/FLAG4cb86ddeb [2020-07-28 18:12:41,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47359ed89/c00453e51b3544a796eee0b04c8a1f3d [2020-07-28 18:12:41,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:12:41,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:12:41,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:41,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:12:41,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:12:41,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:41,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d89acf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41, skipping insertion in model container [2020-07-28 18:12:41,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:41,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:12:41,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:12:41,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:41,922 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:12:41,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:41,968 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:12:41,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41 WrapperNode [2020-07-28 18:12:41,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:41,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:41,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:12:41,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:12:41,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:42,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:12:42,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:12:42,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:12:42,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... [2020-07-28 18:12:42,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:12:42,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:12:42,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:12:42,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:12:42,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 18:12:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:12:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:12:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 18:12:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 18:12:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 18:12:42,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:12:42,469 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 18:12:42,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:42 BoogieIcfgContainer [2020-07-28 18:12:42,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:12:42,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:12:42,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:12:42,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:12:42,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:12:41" (1/3) ... [2020-07-28 18:12:42,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e74612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:42, skipping insertion in model container [2020-07-28 18:12:42,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:41" (2/3) ... [2020-07-28 18:12:42,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e74612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:42, skipping insertion in model container [2020-07-28 18:12:42,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:42" (3/3) ... [2020-07-28 18:12:42,486 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:42,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:12:42,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:12:42,524 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:12:42,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:12:42,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:12:42,560 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:12:42,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:12:42,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:12:42,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:12:42,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:12:42,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:12:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-28 18:12:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 18:12:42,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:12:42,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:12:42,588 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:12:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:12:42,595 INFO L82 PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times [2020-07-28 18:12:42,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:12:42,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212005218] [2020-07-28 18:12:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:12:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:42,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:12:42,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 18:12:42,748 INFO L168 Benchmark]: Toolchain (without parser) took 1093.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -113.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:42,749 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:12:42,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:42,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:42,752 INFO L168 Benchmark]: Boogie Preprocessor took 28.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:12:42,753 INFO L168 Benchmark]: RCFGBuilder took 368.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:42,754 INFO L168 Benchmark]: TraceAbstraction took 269.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:42,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 368.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 269.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:12:44,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:12:44,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:12:44,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:12:44,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:12:44,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:12:44,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:12:44,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:12:44,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:12:44,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:12:44,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:12:44,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:12:44,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:12:44,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:12:44,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:12:44,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:12:44,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:12:44,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:12:44,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:12:44,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:12:44,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:12:44,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:12:44,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:12:44,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:12:44,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:12:44,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:12:44,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:12:44,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:12:44,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:12:44,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:12:44,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:12:44,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:12:44,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:12:44,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:12:44,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:12:44,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:12:44,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:12:44,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:12:44,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:12:44,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:12:44,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:12:44,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 18:12:44,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:12:45,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:12:45,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:12:45,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:12:45,002 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:12:45,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:12:45,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:12:45,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:12:45,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:12:45,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:12:45,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:12:45,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:12:45,006 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 18:12:45,007 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 18:12:45,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:12:45,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:12:45,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:12:45,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:12:45,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:12:45,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:12:45,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:12:45,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:12:45,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:45,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:12:45,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:12:45,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:12:45,010 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 18:12:45,011 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 18:12:45,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:12:45,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:12:45,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 18:12:45,012 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> b996bc637c6bc3c4292d2ff0f03466af19f11d8e [2020-07-28 18:12:45,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:12:45,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:12:45,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:12:45,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:12:45,380 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:12:45,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:45,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9396bbb2d/121ff07511274086a83779032fdc1675/FLAG55cddd836 [2020-07-28 18:12:45,900 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:12:45,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:45,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9396bbb2d/121ff07511274086a83779032fdc1675/FLAG55cddd836 [2020-07-28 18:12:46,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9396bbb2d/121ff07511274086a83779032fdc1675 [2020-07-28 18:12:46,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:12:46,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:12:46,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:46,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:12:46,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:12:46,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a149483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46, skipping insertion in model container [2020-07-28 18:12:46,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:12:46,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:12:46,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:46,504 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:12:46,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:46,551 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:12:46,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46 WrapperNode [2020-07-28 18:12:46,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:46,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:46,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:12:46,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:12:46,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:46,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:12:46,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:12:46,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:12:46,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... [2020-07-28 18:12:46,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:12:46,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:12:46,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:12:46,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:12:46,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-07-28 18:12:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:12:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:12:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-07-28 18:12:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 18:12:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 18:12:47,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:12:47,023 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 18:12:47,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:47 BoogieIcfgContainer [2020-07-28 18:12:47,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:12:47,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:12:47,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:12:47,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:12:47,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:12:46" (1/3) ... [2020-07-28 18:12:47,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b36933f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:47, skipping insertion in model container [2020-07-28 18:12:47,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:46" (2/3) ... [2020-07-28 18:12:47,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b36933f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:47, skipping insertion in model container [2020-07-28 18:12:47,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:47" (3/3) ... [2020-07-28 18:12:47,037 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-28 18:12:47,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:12:47,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:12:47,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:12:47,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:12:47,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:12:47,098 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:12:47,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:12:47,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:12:47,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:12:47,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:12:47,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:12:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-28 18:12:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 18:12:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:12:47,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:12:47,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:12:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:12:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times [2020-07-28 18:12:47,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:12:47,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730654282] [2020-07-28 18:12:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 18:12:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:47,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-28 18:12:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:47,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:12:47,293 INFO L280 TraceCheckUtils]: 0: Hoare triple {17#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {17#true} is VALID [2020-07-28 18:12:47,296 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {25#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:12:47,297 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} assume !~bvult32(main_~i~0, 10bv32); {18#false} is VALID [2020-07-28 18:12:47,298 INFO L280 TraceCheckUtils]: 3: Hoare triple {18#false} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {18#false} is VALID [2020-07-28 18:12:47,298 INFO L280 TraceCheckUtils]: 4: Hoare triple {18#false} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {18#false} is VALID [2020-07-28 18:12:47,299 INFO L280 TraceCheckUtils]: 5: Hoare triple {18#false} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {18#false} is VALID [2020-07-28 18:12:47,299 INFO L280 TraceCheckUtils]: 6: Hoare triple {18#false} assume 0bv32 == __VERIFIER_assert_~cond; {18#false} is VALID [2020-07-28 18:12:47,299 INFO L280 TraceCheckUtils]: 7: Hoare triple {18#false} assume !false; {18#false} is VALID [2020-07-28 18:12:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:12:47,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:12:47,328 INFO L280 TraceCheckUtils]: 7: Hoare triple {18#false} assume !false; {18#false} is VALID [2020-07-28 18:12:47,328 INFO L280 TraceCheckUtils]: 6: Hoare triple {18#false} assume 0bv32 == __VERIFIER_assert_~cond; {18#false} is VALID [2020-07-28 18:12:47,329 INFO L280 TraceCheckUtils]: 5: Hoare triple {18#false} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {18#false} is VALID [2020-07-28 18:12:47,329 INFO L280 TraceCheckUtils]: 4: Hoare triple {18#false} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {18#false} is VALID [2020-07-28 18:12:47,330 INFO L280 TraceCheckUtils]: 3: Hoare triple {18#false} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {18#false} is VALID [2020-07-28 18:12:47,331 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(bvult ULTIMATE.start_main_~i~0 (_ bv10 32))} assume !~bvult32(main_~i~0, 10bv32); {18#false} is VALID [2020-07-28 18:12:47,333 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {59#(bvult ULTIMATE.start_main_~i~0 (_ bv10 32))} is VALID [2020-07-28 18:12:47,334 INFO L280 TraceCheckUtils]: 0: Hoare triple {17#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {17#true} is VALID [2020-07-28 18:12:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:12:47,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730654282] [2020-07-28 18:12:47,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:12:47,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 18:12:47,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083789115] [2020-07-28 18:12:47,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-28 18:12:47,346 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:12:47,350 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:12:47,375 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:47,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:12:47,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:12:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:12:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:12:47,388 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-07-28 18:12:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:47,589 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2020-07-28 18:12:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:12:47,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-28 18:12:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:12:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2020-07-28 18:12:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2020-07-28 18:12:47,603 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 59 transitions. [2020-07-28 18:12:47,725 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:47,738 INFO L225 Difference]: With dead ends: 45 [2020-07-28 18:12:47,738 INFO L226 Difference]: Without dead ends: 23 [2020-07-28 18:12:47,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:12:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-28 18:12:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2020-07-28 18:12:47,781 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:12:47,782 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 13 states. [2020-07-28 18:12:47,783 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 13 states. [2020-07-28 18:12:47,783 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 13 states. [2020-07-28 18:12:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:47,787 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-28 18:12:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-28 18:12:47,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:47,788 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:47,789 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 23 states. [2020-07-28 18:12:47,789 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 23 states. [2020-07-28 18:12:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:47,792 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-28 18:12:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-28 18:12:47,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:47,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:47,794 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:12:47,794 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:12:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-28 18:12:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-28 18:12:47,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2020-07-28 18:12:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:12:47,799 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-28 18:12:47,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:12:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-28 18:12:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 18:12:47,801 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:12:47,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:12:48,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 18:12:48,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:12:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:12:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times [2020-07-28 18:12:48,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:12:48,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912380857] [2020-07-28 18:12:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 18:12:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:48,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 18:12:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:48,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:12:48,157 INFO L280 TraceCheckUtils]: 0: Hoare triple {188#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {188#true} is VALID [2020-07-28 18:12:48,158 INFO L280 TraceCheckUtils]: 1: Hoare triple {188#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {196#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:12:48,160 INFO L280 TraceCheckUtils]: 2: Hoare triple {196#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {196#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:12:48,161 INFO L280 TraceCheckUtils]: 3: Hoare triple {196#(= (_ bv0 32) ULTIMATE.start_main_~i~0)} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {203#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:12:48,162 INFO L280 TraceCheckUtils]: 4: Hoare triple {203#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {203#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:12:48,164 INFO L280 TraceCheckUtils]: 5: Hoare triple {203#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {210#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967294 32)) (_ bv0 32))} is VALID [2020-07-28 18:12:48,165 INFO L280 TraceCheckUtils]: 6: Hoare triple {210#(= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967294 32)) (_ bv0 32))} assume !~bvult32(main_~i~0, 10bv32); {189#false} is VALID [2020-07-28 18:12:48,166 INFO L280 TraceCheckUtils]: 7: Hoare triple {189#false} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {189#false} is VALID [2020-07-28 18:12:48,166 INFO L280 TraceCheckUtils]: 8: Hoare triple {189#false} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {189#false} is VALID [2020-07-28 18:12:48,167 INFO L280 TraceCheckUtils]: 9: Hoare triple {189#false} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {189#false} is VALID [2020-07-28 18:12:48,167 INFO L280 TraceCheckUtils]: 10: Hoare triple {189#false} assume 0bv32 == __VERIFIER_assert_~cond; {189#false} is VALID [2020-07-28 18:12:48,167 INFO L280 TraceCheckUtils]: 11: Hoare triple {189#false} assume !false; {189#false} is VALID [2020-07-28 18:12:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:12:48,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:12:48,394 INFO L280 TraceCheckUtils]: 11: Hoare triple {189#false} assume !false; {189#false} is VALID [2020-07-28 18:12:48,394 INFO L280 TraceCheckUtils]: 10: Hoare triple {189#false} assume 0bv32 == __VERIFIER_assert_~cond; {189#false} is VALID [2020-07-28 18:12:48,395 INFO L280 TraceCheckUtils]: 9: Hoare triple {189#false} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {189#false} is VALID [2020-07-28 18:12:48,395 INFO L280 TraceCheckUtils]: 8: Hoare triple {189#false} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {189#false} is VALID [2020-07-28 18:12:48,395 INFO L280 TraceCheckUtils]: 7: Hoare triple {189#false} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {189#false} is VALID [2020-07-28 18:12:48,397 INFO L280 TraceCheckUtils]: 6: Hoare triple {244#(bvult ULTIMATE.start_main_~i~0 (_ bv10 32))} assume !~bvult32(main_~i~0, 10bv32); {189#false} is VALID [2020-07-28 18:12:48,401 INFO L280 TraceCheckUtils]: 5: Hoare triple {248#(forall ((v_ULTIMATE.start_main_~i~0_18 (_ BitVec 32))) (or (bvult v_ULTIMATE.start_main_~i~0_18 (_ bv10 32)) (not (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) v_ULTIMATE.start_main_~i~0_18))))} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {244#(bvult ULTIMATE.start_main_~i~0 (_ bv10 32))} is VALID [2020-07-28 18:12:48,406 INFO L280 TraceCheckUtils]: 4: Hoare triple {252#(bvult (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) (_ bv10 32))} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {248#(forall ((v_ULTIMATE.start_main_~i~0_18 (_ BitVec 32))) (or (bvult v_ULTIMATE.start_main_~i~0_18 (_ bv10 32)) (not (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) v_ULTIMATE.start_main_~i~0_18))))} is VALID [2020-07-28 18:12:48,412 INFO L280 TraceCheckUtils]: 3: Hoare triple {256#(forall ((v_ULTIMATE.start_main_~i~0_19 (_ BitVec 32))) (or (not (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) v_ULTIMATE.start_main_~i~0_19)) (bvult (bvadd v_ULTIMATE.start_main_~i~0_19 (_ bv1 32)) (_ bv10 32))))} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {252#(bvult (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) (_ bv10 32))} is VALID [2020-07-28 18:12:48,419 INFO L280 TraceCheckUtils]: 2: Hoare triple {260#(bvult (bvadd ULTIMATE.start_main_~i~0 (_ bv2 32)) (_ bv10 32))} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {256#(forall ((v_ULTIMATE.start_main_~i~0_19 (_ BitVec 32))) (or (not (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) v_ULTIMATE.start_main_~i~0_19)) (bvult (bvadd v_ULTIMATE.start_main_~i~0_19 (_ bv1 32)) (_ bv10 32))))} is VALID [2020-07-28 18:12:48,421 INFO L280 TraceCheckUtils]: 1: Hoare triple {188#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {260#(bvult (bvadd ULTIMATE.start_main_~i~0 (_ bv2 32)) (_ bv10 32))} is VALID [2020-07-28 18:12:48,422 INFO L280 TraceCheckUtils]: 0: Hoare triple {188#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {188#true} is VALID [2020-07-28 18:12:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:12:48,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912380857] [2020-07-28 18:12:48,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-28 18:12:48,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2020-07-28 18:12:48,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451060947] [2020-07-28 18:12:48,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-07-28 18:12:48,427 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:12:48,427 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-28 18:12:48,479 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:48,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-28 18:12:48,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:12:48,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-28 18:12:48,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-07-28 18:12:48,480 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2020-07-28 18:12:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,086 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-28 18:12:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-28 18:12:49,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-07-28 18:12:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:12:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 18:12:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-07-28 18:12:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 18:12:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-07-28 18:12:49,092 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 42 transitions. [2020-07-28 18:12:49,202 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:49,204 INFO L225 Difference]: With dead ends: 37 [2020-07-28 18:12:49,204 INFO L226 Difference]: Without dead ends: 31 [2020-07-28 18:12:49,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2020-07-28 18:12:49,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-28 18:12:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-07-28 18:12:49,221 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:12:49,221 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 21 states. [2020-07-28 18:12:49,221 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 21 states. [2020-07-28 18:12:49,221 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 21 states. [2020-07-28 18:12:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,224 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-28 18:12:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-28 18:12:49,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:49,225 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:49,226 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 31 states. [2020-07-28 18:12:49,226 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 31 states. [2020-07-28 18:12:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,229 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-28 18:12:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-28 18:12:49,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:49,230 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:49,230 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:12:49,230 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:12:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-28 18:12:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-28 18:12:49,232 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2020-07-28 18:12:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:12:49,232 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-28 18:12:49,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-28 18:12:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-28 18:12:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 18:12:49,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:12:49,234 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:12:49,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 18:12:49,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:12:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:12:49,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2109281665, now seen corresponding path program 2 times [2020-07-28 18:12:49,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:12:49,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10706411] [2020-07-28 18:12:49,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-07-28 18:12:49,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-07-28 18:12:49,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-28 18:12:49,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-28 18:12:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:49,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:12:49,528 INFO L280 TraceCheckUtils]: 0: Hoare triple {409#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {409#true} is VALID [2020-07-28 18:12:49,528 INFO L280 TraceCheckUtils]: 1: Hoare triple {409#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {409#true} is VALID [2020-07-28 18:12:49,528 INFO L280 TraceCheckUtils]: 2: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,529 INFO L280 TraceCheckUtils]: 3: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,529 INFO L280 TraceCheckUtils]: 4: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,529 INFO L280 TraceCheckUtils]: 5: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,530 INFO L280 TraceCheckUtils]: 6: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,530 INFO L280 TraceCheckUtils]: 7: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,530 INFO L280 TraceCheckUtils]: 8: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,531 INFO L280 TraceCheckUtils]: 9: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,531 INFO L280 TraceCheckUtils]: 10: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,531 INFO L280 TraceCheckUtils]: 11: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,532 INFO L280 TraceCheckUtils]: 12: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,532 INFO L280 TraceCheckUtils]: 13: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,532 INFO L280 TraceCheckUtils]: 14: Hoare triple {409#true} assume !~bvult32(main_~i~0, 10bv32); {409#true} is VALID [2020-07-28 18:12:49,533 INFO L280 TraceCheckUtils]: 15: Hoare triple {409#true} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {409#true} is VALID [2020-07-28 18:12:49,533 INFO L280 TraceCheckUtils]: 16: Hoare triple {409#true} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {409#true} is VALID [2020-07-28 18:12:49,534 INFO L280 TraceCheckUtils]: 17: Hoare triple {409#true} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {465#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:12:49,535 INFO L280 TraceCheckUtils]: 18: Hoare triple {465#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {410#false} is VALID [2020-07-28 18:12:49,536 INFO L280 TraceCheckUtils]: 19: Hoare triple {410#false} assume !false; {410#false} is VALID [2020-07-28 18:12:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-28 18:12:49,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:12:49,571 INFO L280 TraceCheckUtils]: 19: Hoare triple {410#false} assume !false; {410#false} is VALID [2020-07-28 18:12:49,573 INFO L280 TraceCheckUtils]: 18: Hoare triple {475#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {410#false} is VALID [2020-07-28 18:12:49,574 INFO L280 TraceCheckUtils]: 17: Hoare triple {409#true} __VERIFIER_assert_#in~cond := (if ~bvuge32(main_~i~0, 0bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {475#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 18:12:49,574 INFO L280 TraceCheckUtils]: 16: Hoare triple {409#true} assume !(~bvsle32(48bv32, ~zero_extendFrom8To32(main_~c~0)) && ~bvsle32(~zero_extendFrom8To32(main_~c~0), 57bv32)); {409#true} is VALID [2020-07-28 18:12:49,575 INFO L280 TraceCheckUtils]: 15: Hoare triple {409#true} call write~intINTTYPE1(0bv8, main_~#in~0.base, ~bvadd32(10bv32, main_~#in~0.offset), 1bv32);main_~idx_in~0 := 0bv32;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0bv32;call main_#t~mem2 := read~intINTTYPE1(main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~idx_in~0), 1bv32);main_~c~0 := main_#t~mem2;havoc main_#t~mem2; {409#true} is VALID [2020-07-28 18:12:49,575 INFO L280 TraceCheckUtils]: 14: Hoare triple {409#true} assume !~bvult32(main_~i~0, 10bv32); {409#true} is VALID [2020-07-28 18:12:49,576 INFO L280 TraceCheckUtils]: 13: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,576 INFO L280 TraceCheckUtils]: 12: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,576 INFO L280 TraceCheckUtils]: 11: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,576 INFO L280 TraceCheckUtils]: 10: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,577 INFO L280 TraceCheckUtils]: 9: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,577 INFO L280 TraceCheckUtils]: 8: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,578 INFO L280 TraceCheckUtils]: 7: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,578 INFO L280 TraceCheckUtils]: 6: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,578 INFO L280 TraceCheckUtils]: 5: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,579 INFO L280 TraceCheckUtils]: 4: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,579 INFO L280 TraceCheckUtils]: 3: Hoare triple {409#true} main_#t~post0 := main_~i~0;main_~i~0 := ~bvadd32(1bv32, main_#t~post0);havoc main_#t~post0; {409#true} is VALID [2020-07-28 18:12:49,580 INFO L280 TraceCheckUtils]: 2: Hoare triple {409#true} assume !!~bvult32(main_~i~0, 10bv32);call write~intINTTYPE1(main_#t~nondet1, main_~#in~0.base, ~bvadd32(main_~#in~0.offset, main_~i~0), 1bv32);havoc main_#t~nondet1; {409#true} is VALID [2020-07-28 18:12:49,580 INFO L280 TraceCheckUtils]: 1: Hoare triple {409#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~mem2, main_#t~post3, main_#t~mem4, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11bv32);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0bv32; {409#true} is VALID [2020-07-28 18:12:49,581 INFO L280 TraceCheckUtils]: 0: Hoare triple {409#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier); {409#true} is VALID [2020-07-28 18:12:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-28 18:12:49,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10706411] [2020-07-28 18:12:49,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:12:49,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 18:12:49,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298016187] [2020-07-28 18:12:49,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-28 18:12:49,584 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:12:49,584 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:12:49,603 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:49,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:12:49,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:12:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:12:49,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:12:49,605 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2020-07-28 18:12:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,664 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-28 18:12:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 18:12:49,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-28 18:12:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:12:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-28 18:12:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-28 18:12:49,667 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 11 transitions. [2020-07-28 18:12:49,698 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:49,698 INFO L225 Difference]: With dead ends: 21 [2020-07-28 18:12:49,698 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:12:49,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:12:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:12:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:12:49,700 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:12:49,700 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:49,700 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:49,700 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,701 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:12:49,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:49,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:49,701 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:49,701 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:49,702 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:49,702 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:12:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:49,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:49,703 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:49,703 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:12:49,704 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:12:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:12:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:12:49,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-07-28 18:12:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:12:49,705 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:12:49,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:12:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:49,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:49,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 18:12:49,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:12:49,955 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:12:49,956 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-07-28 18:12:49,956 INFO L268 CegarLoopResult]: For program point L27-3(lines 27 33) no Hoare annotation was computed. [2020-07-28 18:12:49,956 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-28 18:12:49,956 INFO L271 CegarLoopResult]: At program point L36(lines 10 37) the Hoare annotation is: true [2020-07-28 18:12:49,956 INFO L271 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2020-07-28 18:12:49,956 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 18:12:49,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:12:49,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:12:49,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-28 18:12:49,957 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2020-07-28 18:12:49,957 INFO L271 CegarLoopResult]: At program point L18-3(lines 18 20) the Hoare annotation is: true [2020-07-28 18:12:49,957 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2020-07-28 18:12:49,958 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-28 18:12:49,962 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:12:49,962 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 18:12:49,962 WARN L170 areAnnotationChecker]: L18-4 has no Hoare annotation [2020-07-28 18:12:49,962 WARN L170 areAnnotationChecker]: L18-4 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L18-4 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-28 18:12:49,963 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:12:49,964 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:12:49,964 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:12:49,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:12:49 BoogieIcfgContainer [2020-07-28 18:12:49,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:12:49,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:12:49,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:12:49,971 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:12:49,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:47" (3/4) ... [2020-07-28 18:12:49,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:12:49,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-07-28 18:12:49,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 18:12:49,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 18:12:50,034 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:12:50,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:12:50,037 INFO L168 Benchmark]: Toolchain (without parser) took 3759.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.2 MB in the beginning and 903.0 MB in the end (delta: 57.3 MB). Peak memory consumption was 192.5 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,038 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:12:50,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.95 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,040 INFO L168 Benchmark]: Boogie Preprocessor took 31.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,040 INFO L168 Benchmark]: RCFGBuilder took 352.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,042 INFO L168 Benchmark]: TraceAbstraction took 2940.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.6 MB in the end (delta: 190.4 MB). Peak memory consumption was 190.4 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,043 INFO L168 Benchmark]: Witness Printer took 64.10 ms. Allocated memory is still 1.2 GB. Free memory was 909.6 MB in the beginning and 903.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.95 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 352.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2940.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.6 MB in the end (delta: 190.4 MB). Peak memory consumption was 190.4 MB. Max. memory is 11.5 GB. * Witness Printer took 64.10 ms. Allocated memory is still 1.2 GB. Free memory was 909.6 MB in the beginning and 903.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 43 SDslu, 50 SDs, 0 SdLazy, 54 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 2 QuantifiedInterpolants, 1751 SizeOfPredicates, 6 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 72/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...