./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb6ff0b2d9abd29a15d3eb2d5a86a23b460e9725 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb6ff0b2d9abd29a15d3eb2d5a86a23b460e9725 .................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:25,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:25,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:25,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:25,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:25,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:25,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:25,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:25,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:25,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:25,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:25,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:25,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:25,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:25,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:25,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:25,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:25,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:25,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:25,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:25,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:25,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:25,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:25,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:25,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:25,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:25,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:25,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:25,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:25,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:25,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:25,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:25,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:25,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:25,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:25,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:25,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:25,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:25,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:25,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:25,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:25,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:23:25,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:25,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:25,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:25,398 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:25,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:25,398 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:25,399 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:25,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:23:25,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:23:25,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:25,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:25,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:23:25,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:25,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:25,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:25,402 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:23:25,402 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:23:25,402 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:23:25,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:25,402 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:25,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:25,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:25,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:25,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:25,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:25,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:25,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:25,404 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:25,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:25,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:25,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> cb6ff0b2d9abd29a15d3eb2d5a86a23b460e9725 [2019-10-22 11:23:25,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:25,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:25,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:25,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:25,451 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:25,452 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:25,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/7c241ed17/388e3ed2e9c14ce7ad92aedbe62817b9/FLAG5a5310322 [2019-10-22 11:23:25,970 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:25,973 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:25,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/7c241ed17/388e3ed2e9c14ce7ad92aedbe62817b9/FLAG5a5310322 [2019-10-22 11:23:26,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/7c241ed17/388e3ed2e9c14ce7ad92aedbe62817b9 [2019-10-22 11:23:26,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:26,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:26,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:26,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:26,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:26,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5aa0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26, skipping insertion in model container [2019-10-22 11:23:26,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,301 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:26,344 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:26,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:26,734 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:26,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:26,839 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:26,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26 WrapperNode [2019-10-22 11:23:26,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:26,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:26,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:26,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:26,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:26,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:26,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:26,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:26,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... [2019-10-22 11:23:26,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:26,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:26,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:26,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:26,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/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 [2019-10-22 11:23:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:23:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:26,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:27,267 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:27,267 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:23:27,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:27 BoogieIcfgContainer [2019-10-22 11:23:27,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:27,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:27,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:27,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:27,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:26" (1/3) ... [2019-10-22 11:23:27,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85426f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:27, skipping insertion in model container [2019-10-22 11:23:27,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:26" (2/3) ... [2019-10-22 11:23:27,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85426f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:27, skipping insertion in model container [2019-10-22 11:23:27,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:27" (3/3) ... [2019-10-22 11:23:27,276 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:27,293 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:27,309 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2019-10-22 11:23:27,329 INFO L249 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2019-10-22 11:23:27,362 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:27,362 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:23:27,362 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:27,362 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:27,363 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:27,363 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:27,363 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:27,363 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-22 11:23:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:23:27,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:27,395 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:27,396 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1805031099, now seen corresponding path program 1 times [2019-10-22 11:23:27,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:27,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485989551] [2019-10-22 11:23:27,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:27,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485989551] [2019-10-22 11:23:27,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:27,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:27,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90239956] [2019-10-22 11:23:27,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:27,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:27,617 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2019-10-22 11:23:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:27,781 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2019-10-22 11:23:27,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:27,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 11:23:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:27,796 INFO L225 Difference]: With dead ends: 127 [2019-10-22 11:23:27,797 INFO L226 Difference]: Without dead ends: 121 [2019-10-22 11:23:27,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-22 11:23:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 46. [2019-10-22 11:23:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 11:23:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-10-22 11:23:27,840 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 7 [2019-10-22 11:23:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:27,840 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-10-22 11:23:27,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-10-22 11:23:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:23:27,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:27,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:27,841 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:27,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1805033021, now seen corresponding path program 1 times [2019-10-22 11:23:27,842 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:27,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257355312] [2019-10-22 11:23:27,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:27,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257355312] [2019-10-22 11:23:27,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:27,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:27,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864061066] [2019-10-22 11:23:27,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:27,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:27,883 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 3 states. [2019-10-22 11:23:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:27,932 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-10-22 11:23:27,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:27,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:23:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:27,934 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:23:27,934 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 11:23:27,935 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 11:23:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-10-22 11:23:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 11:23:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-10-22 11:23:27,938 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2019-10-22 11:23:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:27,941 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-10-22 11:23:27,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-10-22 11:23:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:27,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:27,943 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:27,943 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:27,943 INFO L82 PathProgramCache]: Analyzing trace with hash 121388915, now seen corresponding path program 1 times [2019-10-22 11:23:27,944 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:27,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450838931] [2019-10-22 11:23:27,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:27,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:27,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450838931] [2019-10-22 11:23:27,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:27,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:27,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551006078] [2019-10-22 11:23:27,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:27,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:27,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:27,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:27,999 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2019-10-22 11:23:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,022 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2019-10-22 11:23:28,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:28,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 11:23:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,024 INFO L225 Difference]: With dead ends: 78 [2019-10-22 11:23:28,024 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 11:23:28,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 11:23:28,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 47. [2019-10-22 11:23:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 11:23:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-10-22 11:23:28,029 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 8 [2019-10-22 11:23:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,030 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-10-22 11:23:28,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-10-22 11:23:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:28,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,031 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash 178647217, now seen corresponding path program 1 times [2019-10-22 11:23:28,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250537679] [2019-10-22 11:23:28,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250537679] [2019-10-22 11:23:28,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:28,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323316042] [2019-10-22 11:23:28,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:28,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:28,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:28,089 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2019-10-22 11:23:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,135 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2019-10-22 11:23:28,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:28,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 11:23:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,136 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:23:28,136 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:23:28,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:23:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 11:23:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:23:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2019-10-22 11:23:28,140 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 8 [2019-10-22 11:23:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,140 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2019-10-22 11:23:28,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2019-10-22 11:23:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:28,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,141 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,141 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash 178647218, now seen corresponding path program 1 times [2019-10-22 11:23:28,142 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274416832] [2019-10-22 11:23:28,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274416832] [2019-10-22 11:23:28,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:28,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460633661] [2019-10-22 11:23:28,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:28,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:28,214 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2019-10-22 11:23:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,282 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2019-10-22 11:23:28,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:28,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:23:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,283 INFO L225 Difference]: With dead ends: 81 [2019-10-22 11:23:28,283 INFO L226 Difference]: Without dead ends: 81 [2019-10-22 11:23:28,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-22 11:23:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 45. [2019-10-22 11:23:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:23:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2019-10-22 11:23:28,288 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 8 [2019-10-22 11:23:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,288 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2019-10-22 11:23:28,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2019-10-22 11:23:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:28,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,289 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,289 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,289 INFO L82 PathProgramCache]: Analyzing trace with hash 180494260, now seen corresponding path program 1 times [2019-10-22 11:23:28,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164723332] [2019-10-22 11:23:28,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164723332] [2019-10-22 11:23:28,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:28,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72215718] [2019-10-22 11:23:28,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:28,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,364 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 4 states. [2019-10-22 11:23:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,461 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2019-10-22 11:23:28,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:28,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 11:23:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,463 INFO L225 Difference]: With dead ends: 79 [2019-10-22 11:23:28,463 INFO L226 Difference]: Without dead ends: 79 [2019-10-22 11:23:28,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:28,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-10-22 11:23:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2019-10-22 11:23:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 11:23:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2019-10-22 11:23:28,467 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 8 [2019-10-22 11:23:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,468 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2019-10-22 11:23:28,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2019-10-22 11:23:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:23:28,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,468 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,469 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash 690580011, now seen corresponding path program 1 times [2019-10-22 11:23:28,469 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391406723] [2019-10-22 11:23:28,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391406723] [2019-10-22 11:23:28,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:28,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968338611] [2019-10-22 11:23:28,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:28,552 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:28,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,553 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 4 states. [2019-10-22 11:23:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,591 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-10-22 11:23:28,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:28,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 11:23:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,592 INFO L225 Difference]: With dead ends: 46 [2019-10-22 11:23:28,592 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 11:23:28,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 11:23:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-10-22 11:23:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 11:23:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-10-22 11:23:28,596 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 10 [2019-10-22 11:23:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,596 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-10-22 11:23:28,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-10-22 11:23:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:23:28,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,597 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,597 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,598 INFO L82 PathProgramCache]: Analyzing trace with hash 690580063, now seen corresponding path program 1 times [2019-10-22 11:23:28,598 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496129016] [2019-10-22 11:23:28,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496129016] [2019-10-22 11:23:28,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:28,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534780727] [2019-10-22 11:23:28,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:28,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:28,658 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 3 states. [2019-10-22 11:23:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,688 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-10-22 11:23:28,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:28,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-22 11:23:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,689 INFO L225 Difference]: With dead ends: 44 [2019-10-22 11:23:28,689 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 11:23:28,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 11:23:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-22 11:23:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-22 11:23:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-10-22 11:23:28,692 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2019-10-22 11:23:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,692 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-10-22 11:23:28,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-10-22 11:23:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:23:28,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,693 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,693 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,694 INFO L82 PathProgramCache]: Analyzing trace with hash 690580064, now seen corresponding path program 1 times [2019-10-22 11:23:28,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445038700] [2019-10-22 11:23:28,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445038700] [2019-10-22 11:23:28,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:28,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692026237] [2019-10-22 11:23:28,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:28,742 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:28,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,742 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2019-10-22 11:23:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,762 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2019-10-22 11:23:28,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:28,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 11:23:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,763 INFO L225 Difference]: With dead ends: 77 [2019-10-22 11:23:28,764 INFO L226 Difference]: Without dead ends: 77 [2019-10-22 11:23:28,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-10-22 11:23:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2019-10-22 11:23:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 11:23:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-10-22 11:23:28,769 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 10 [2019-10-22 11:23:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,770 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-10-22 11:23:28,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-10-22 11:23:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:23:28,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,770 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,775 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash 747838366, now seen corresponding path program 1 times [2019-10-22 11:23:28,775 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571134619] [2019-10-22 11:23:28,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571134619] [2019-10-22 11:23:28,830 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:23:28,830 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378441613] [2019-10-22 11:23:28,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:28,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:28,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:28,835 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 6 states. [2019-10-22 11:23:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:28,930 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2019-10-22 11:23:28,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:23:28,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 11:23:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:28,931 INFO L225 Difference]: With dead ends: 107 [2019-10-22 11:23:28,931 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:23:28,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:23:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:23:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 56. [2019-10-22 11:23:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 11:23:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2019-10-22 11:23:28,936 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 10 [2019-10-22 11:23:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:28,936 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2019-10-22 11:23:28,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2019-10-22 11:23:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:23:28,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,937 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,937 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1772121568, now seen corresponding path program 1 times [2019-10-22 11:23:28,938 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745215154] [2019-10-22 11:23:28,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:28,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745215154] [2019-10-22 11:23:28,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:28,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:28,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169941624] [2019-10-22 11:23:28,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:28,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:28,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:28,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:28,991 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 6 states. [2019-10-22 11:23:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,111 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2019-10-22 11:23:29,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:29,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 11:23:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,112 INFO L225 Difference]: With dead ends: 81 [2019-10-22 11:23:29,112 INFO L226 Difference]: Without dead ends: 81 [2019-10-22 11:23:29,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:23:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-22 11:23:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2019-10-22 11:23:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 11:23:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-10-22 11:23:29,116 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 10 [2019-10-22 11:23:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,116 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-10-22 11:23:29,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-10-22 11:23:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:23:29,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:29,117 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:29,117 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash -66856135, now seen corresponding path program 1 times [2019-10-22 11:23:29,118 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:29,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654438210] [2019-10-22 11:23:29,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654438210] [2019-10-22 11:23:29,157 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:29,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:29,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301891944] [2019-10-22 11:23:29,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:29,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:29,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:29,159 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 5 states. [2019-10-22 11:23:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,227 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2019-10-22 11:23:29,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:29,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 11:23:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,229 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:23:29,229 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:23:29,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:23:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2019-10-22 11:23:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:23:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2019-10-22 11:23:29,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 11 [2019-10-22 11:23:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,233 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2019-10-22 11:23:29,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2019-10-22 11:23:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:23:29,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:29,234 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:29,234 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1708151227, now seen corresponding path program 1 times [2019-10-22 11:23:29,235 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:29,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042144996] [2019-10-22 11:23:29,235 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042144996] [2019-10-22 11:23:29,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:29,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:29,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468414585] [2019-10-22 11:23:29,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:29,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:29,279 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 5 states. [2019-10-22 11:23:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,330 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-10-22 11:23:29,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:29,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 11:23:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,332 INFO L225 Difference]: With dead ends: 63 [2019-10-22 11:23:29,332 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 11:23:29,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 11:23:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2019-10-22 11:23:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 11:23:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2019-10-22 11:23:29,337 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 11 [2019-10-22 11:23:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,337 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2019-10-22 11:23:29,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2019-10-22 11:23:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 11:23:29,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:29,338 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:29,339 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-10-22 11:23:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:29,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1736941833, now seen corresponding path program 1 times [2019-10-22 11:23:29,339 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:29,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812309271] [2019-10-22 11:23:29,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812309271] [2019-10-22 11:23:29,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400163771] [2019-10-22 11:23:29,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 11:23:29,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:29,509 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_18|], 1=[|v_#valid_26|]} [2019-10-22 11:23:29,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 11:23:29,529 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-10-22 11:23:29,529 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:23:29,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:23:29,565 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-10-22 11:23:29,565 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 11:23:29,574 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:23:29,577 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:23:29,578 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2019-10-22 11:23:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,594 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:29,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [326013722] [2019-10-22 11:23:29,671 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 13 [2019-10-22 11:23:29,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:23:29,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:23:30,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:30,021 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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:316) 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) [2019-10-22 11:23:30,027 INFO L168 Benchmark]: Toolchain (without parser) took 3742.75 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 241.2 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -280.1 MB). Peak memory consumption was 271.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:30,028 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:30,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:30,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:30,033 INFO L168 Benchmark]: Boogie Preprocessor took 26.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:30,034 INFO L168 Benchmark]: RCFGBuilder took 361.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:30,034 INFO L168 Benchmark]: TraceAbstraction took 2756.88 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.4 MB). Peak memory consumption was 271.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:30,036 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 554.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 361.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2756.88 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.4 MB). Peak memory consumption was 271.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:32,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:32,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:32,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:32,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:32,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:32,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:32,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:32,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:32,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:32,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:32,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:32,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:32,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:32,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:32,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:32,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:32,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:32,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:32,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:32,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:32,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:32,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:32,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:32,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:32,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:32,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:32,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:32,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:32,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:32,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:32,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:32,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:32,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:32,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:32,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:32,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:32,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:32,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:32,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:32,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:32,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:32,220 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:32,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:32,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:32,221 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:32,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:32,221 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:32,221 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:32,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:32,222 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:32,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:23:32,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:23:32,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:32,233 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:23:32,234 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:32,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:32,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:32,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:32,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:32,237 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> cb6ff0b2d9abd29a15d3eb2d5a86a23b460e9725 [2019-10-22 11:23:32,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:32,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:32,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:32,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:32,293 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:32,294 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:32,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/bf23eb120/0c78cd70c33440c3b8235be2f351473b/FLAG210ccb31f [2019-10-22 11:23:32,777 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:32,777 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:32,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/bf23eb120/0c78cd70c33440c3b8235be2f351473b/FLAG210ccb31f [2019-10-22 11:23:33,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/data/bf23eb120/0c78cd70c33440c3b8235be2f351473b [2019-10-22 11:23:33,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:33,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:33,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:33,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:33,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:33,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35898692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33, skipping insertion in model container [2019-10-22 11:23:33,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,116 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:33,156 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:33,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:33,484 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:33,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:33,658 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:33,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33 WrapperNode [2019-10-22 11:23:33,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:33,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:33,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:33,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:33,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:33,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:33,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:33,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:33,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... [2019-10-22 11:23:33,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:33,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:33,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:33,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:33,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/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 [2019-10-22 11:23:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-10-22 11:23:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-10-22 11:23:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:34,233 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:34,234 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:23:34,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:34 BoogieIcfgContainer [2019-10-22 11:23:34,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:34,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:34,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:34,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:34,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:33" (1/3) ... [2019-10-22 11:23:34,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed75fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:34, skipping insertion in model container [2019-10-22 11:23:34,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:33" (2/3) ... [2019-10-22 11:23:34,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed75fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:34, skipping insertion in model container [2019-10-22 11:23:34,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:34" (3/3) ... [2019-10-22 11:23:34,242 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca-2.i [2019-10-22 11:23:34,251 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:34,258 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2019-10-22 11:23:34,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2019-10-22 11:23:34,286 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:34,287 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:23:34,287 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:34,287 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:34,287 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:34,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:34,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:34,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-22 11:23:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:23:34,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:34,304 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:34,306 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION]=== [2019-10-22 11:23:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:34,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1805031099, now seen corresponding path program 1 times [2019-10-22 11:23:34,319 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:34,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1743167684] [2019-10-22 11:23:34,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e6e39ccd-0e48-4c97-9b3e-be3655889178/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:34,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:34,570 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Sort FloatRoundingMode not declared at de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.sort(WrapperScript.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.NonDeclaringTermTransferrer.transferSort(NonDeclaringTermTransferrer.java:111) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.DeclarableFunctionSymbol.defineOrDeclare(DeclarableFunctionSymbol.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.SmtFunctionsAndAxioms.transferSymbols(SmtFunctionsAndAxioms.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.createExternalManagedScript(IpTcStrategyModuleTraceCheck.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.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.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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:316) 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) [2019-10-22 11:23:34,576 INFO L168 Benchmark]: Toolchain (without parser) took 1476.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:34,576 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:34,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:34,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.17 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:34,578 INFO L168 Benchmark]: Boogie Preprocessor took 26.61 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. [2019-10-22 11:23:34,581 INFO L168 Benchmark]: RCFGBuilder took 504.69 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:34,582 INFO L168 Benchmark]: TraceAbstraction took 337.98 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:34,585 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 558.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.17 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.61 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 504.69 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 337.98 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Sort FloatRoundingMode not declared: de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...