./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-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_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 5731971c09a136eb079f9cbecfc34cb6e82f7a1b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 5731971c09a136eb079f9cbecfc34cb6e82f7a1b ..................................................................................................................................................................................................................................................... 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 11:24:52,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:52,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:52,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:52,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:52,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:52,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:52,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:52,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:52,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:52,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:52,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:52,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:52,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:52,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:52,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:52,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:52,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:52,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:52,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:52,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:52,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:52,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:52,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:52,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:52,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:52,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:52,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:52,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:52,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:52,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:52,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:52,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:52,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:52,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:52,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:52,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:52,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:52,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:52,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:52,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:52,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:24:52,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:52,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:52,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:52,411 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:52,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:52,411 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:52,411 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:52,412 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:52,412 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:52,412 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:52,412 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:52,412 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:52,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:24:52,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:24:52,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:52,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:52,414 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:24:52,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:52,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:52,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:52,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:52,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:52,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:52,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:52,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:52,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:52,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:52,417 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:52,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:52,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:52,418 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_83c31976-c59b-4c79-b15b-4df960ba2991/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 -> 5731971c09a136eb079f9cbecfc34cb6e82f7a1b [2019-10-22 11:24:52,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:52,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:52,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:52,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:52,480 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:52,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i [2019-10-22 11:24:52,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/443f85e49/ca87a655ad9d46f39adf1c3c9fab784b/FLAGb5777053a [2019-10-22 11:24:52,951 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:52,953 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i [2019-10-22 11:24:52,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/443f85e49/ca87a655ad9d46f39adf1c3c9fab784b/FLAGb5777053a [2019-10-22 11:24:52,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/443f85e49/ca87a655ad9d46f39adf1c3c9fab784b [2019-10-22 11:24:52,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:52,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:52,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:52,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:52,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:52,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:52" (1/1) ... [2019-10-22 11:24:52,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf580bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:52, skipping insertion in model container [2019-10-22 11:24:52,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:52" (1/1) ... [2019-10-22 11:24:52,995 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:53,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:53,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:53,385 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:53,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:53,478 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:53,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53 WrapperNode [2019-10-22 11:24:53,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:53,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:53,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:53,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:53,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:53,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:53,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:53,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:53,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... [2019-10-22 11:24:53,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:53,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:53,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:53,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:53,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 11:24:53,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:24:53,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:24:53,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:53,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:53,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:53,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:53,995 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:53,995 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:24:53,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:53 BoogieIcfgContainer [2019-10-22 11:24:53,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:53,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:53,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:53,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:54,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:52" (1/3) ... [2019-10-22 11:24:54,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4706058b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:54, skipping insertion in model container [2019-10-22 11:24:54,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:53" (2/3) ... [2019-10-22 11:24:54,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4706058b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:54, skipping insertion in model container [2019-10-22 11:24:54,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:53" (3/3) ... [2019-10-22 11:24:54,003 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca-2.i [2019-10-22 11:24:54,011 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:54,019 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-10-22 11:24:54,030 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-10-22 11:24:54,049 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:54,049 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:24:54,049 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:54,049 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:54,049 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:54,050 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:54,050 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:54,050 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 11:24:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:54,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,069 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,071 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash 889510840, now seen corresponding path program 1 times [2019-10-22 11:24:54,083 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145567416] [2019-10-22 11:24:54,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,224 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 11:24:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145567416] [2019-10-22 11:24:54,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:54,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958547988] [2019-10-22 11:24:54,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:54,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:54,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:54,255 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2019-10-22 11:24:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,332 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2019-10-22 11:24:54,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:54,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 11:24:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,342 INFO L225 Difference]: With dead ends: 34 [2019-10-22 11:24:54,342 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 11:24:54,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:24:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 11:24:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-10-22 11:24:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:24:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-22 11:24:54,376 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2019-10-22 11:24:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,376 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-22 11:24:54,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-22 11:24:54,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:54,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,377 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 889512762, now seen corresponding path program 1 times [2019-10-22 11:24:54,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287422886] [2019-10-22 11:24:54,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,399 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 11:24:54,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287422886] [2019-10-22 11:24:54,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:54,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892270070] [2019-10-22 11:24:54,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:54,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:54,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:54,404 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-22 11:24:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,446 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-22 11:24:54,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:54,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:24:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,448 INFO L225 Difference]: With dead ends: 29 [2019-10-22 11:24:54,448 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 11:24:54,448 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 11:24:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 11:24:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-22 11:24:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 11:24:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-22 11:24:54,453 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2019-10-22 11:24:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,454 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-22 11:24:54,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-22 11:24:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:54,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,455 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,455 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1805033015, now seen corresponding path program 1 times [2019-10-22 11:24:54,455 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23670162] [2019-10-22 11:24:54,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,509 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 11:24:54,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23670162] [2019-10-22 11:24:54,510 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:54,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502454911] [2019-10-22 11:24:54,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:54,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:54,511 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2019-10-22 11:24:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,547 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-22 11:24:54,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:54,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:24:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,548 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:24:54,548 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 11:24:54,549 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 11:24:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 11:24:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-22 11:24:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 11:24:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-22 11:24:54,552 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2019-10-22 11:24:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,552 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-22 11:24:54,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-22 11:24:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:54,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,553 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1805033016, now seen corresponding path program 1 times [2019-10-22 11:24:54,553 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621173268] [2019-10-22 11:24:54,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,602 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 11:24:54,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621173268] [2019-10-22 11:24:54,602 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,602 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:54,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498800344] [2019-10-22 11:24:54,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:54,603 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:54,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:54,604 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-10-22 11:24:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,631 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-22 11:24:54,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:54,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:24:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,632 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:24:54,632 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 11:24:54,632 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 11:24:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 11:24:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-22 11:24:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 11:24:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-22 11:24:54,635 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2019-10-22 11:24:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,635 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-22 11:24:54,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-22 11:24:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:54,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,636 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,636 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1805033069, now seen corresponding path program 1 times [2019-10-22 11:24:54,637 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829046523] [2019-10-22 11:24:54,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,676 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 11:24:54,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829046523] [2019-10-22 11:24:54,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:54,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766449029] [2019-10-22 11:24:54,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:54,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:54,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:54,678 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-10-22 11:24:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,697 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-10-22 11:24:54,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:54,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:24:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,699 INFO L225 Difference]: With dead ends: 40 [2019-10-22 11:24:54,699 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 11:24:54,699 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 11:24:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 11:24:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2019-10-22 11:24:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 11:24:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-22 11:24:54,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2019-10-22 11:24:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,703 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-22 11:24:54,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-22 11:24:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:54,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,704 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,704 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1805092651, now seen corresponding path program 1 times [2019-10-22 11:24:54,705 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364082097] [2019-10-22 11:24:54,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,822 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 11:24:54,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364082097] [2019-10-22 11:24:54,822 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:54,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407005222] [2019-10-22 11:24:54,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:54,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:54,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:54,824 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2019-10-22 11:24:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,862 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-10-22 11:24:54,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:54,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:24:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,864 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:24:54,864 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:24:54,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 11:24:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:24:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2019-10-22 11:24:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 11:24:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-22 11:24:54,868 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 7 [2019-10-22 11:24:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,869 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-22 11:24:54,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-22 11:24:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:54,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,869 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,870 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939693, now seen corresponding path program 1 times [2019-10-22 11:24:54,870 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:54,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654135097] [2019-10-22 11:24:54,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:54,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,960 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 11:24:54,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654135097] [2019-10-22 11:24:54,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:54,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753769638] [2019-10-22 11:24:54,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:54,961 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:54,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:54,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:54,962 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-10-22 11:24:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,027 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-10-22 11:24:55,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:55,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 11:24:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,028 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:24:55,028 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:24:55,029 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 11:24:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:24:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-10-22 11:24:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:24:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-22 11:24:55,032 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2019-10-22 11:24:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,032 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-22 11:24:55,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-22 11:24:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:55,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,033 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,034 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash -530059845, now seen corresponding path program 1 times [2019-10-22 11:24:55,034 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313757267] [2019-10-22 11:24:55,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,103 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 11:24:55,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313757267] [2019-10-22 11:24:55,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:55,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466850592] [2019-10-22 11:24:55,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:55,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:55,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:55,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:55,105 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-10-22 11:24:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,156 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-10-22 11:24:55,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:55,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 11:24:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,157 INFO L225 Difference]: With dead ends: 28 [2019-10-22 11:24:55,157 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 11:24:55,157 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 11:24:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 11:24:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 11:24:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:24:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-22 11:24:55,160 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2019-10-22 11:24:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,160 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-22 11:24:55,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-22 11:24:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:55,161 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,161 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,161 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash -530059844, now seen corresponding path program 1 times [2019-10-22 11:24:55,162 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312474995] [2019-10-22 11:24:55,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,248 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 11:24:55,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312474995] [2019-10-22 11:24:55,248 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:55,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603030919] [2019-10-22 11:24:55,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:55,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:55,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:55,250 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 6 states. [2019-10-22 11:24:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,321 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-10-22 11:24:55,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:55,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-10-22 11:24:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,322 INFO L225 Difference]: With dead ends: 38 [2019-10-22 11:24:55,322 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 11:24:55,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 11:24:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-10-22 11:24:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:24:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-22 11:24:55,325 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2019-10-22 11:24:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,325 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-22 11:24:55,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-22 11:24:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:55,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,326 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,326 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash 748014006, now seen corresponding path program 1 times [2019-10-22 11:24:55,327 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552844803] [2019-10-22 11:24:55,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,386 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 11:24:55,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552844803] [2019-10-22 11:24:55,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:55,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24987239] [2019-10-22 11:24:55,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:55,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:55,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:55,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:55,388 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2019-10-22 11:24:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,421 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-10-22 11:24:55,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:55,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 11:24:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,422 INFO L225 Difference]: With dead ends: 28 [2019-10-22 11:24:55,422 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 11:24:55,423 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 11:24:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 11:24:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 11:24:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:24:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-22 11:24:55,425 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 10 [2019-10-22 11:24:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,426 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-22 11:24:55,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-22 11:24:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:55,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,426 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,427 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 748014007, now seen corresponding path program 1 times [2019-10-22 11:24:55,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546783516] [2019-10-22 11:24:55,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,512 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 11:24:55,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546783516] [2019-10-22 11:24:55,512 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,512 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:24:55,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040302406] [2019-10-22 11:24:55,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:24:55,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:55,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:24:55,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:55,514 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 7 states. [2019-10-22 11:24:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,644 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2019-10-22 11:24:55,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:24:55,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-10-22 11:24:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,646 INFO L225 Difference]: With dead ends: 72 [2019-10-22 11:24:55,646 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 11:24:55,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:24:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 11:24:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 34. [2019-10-22 11:24:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:24:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-22 11:24:55,650 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 10 [2019-10-22 11:24:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,650 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-22 11:24:55,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:24:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-22 11:24:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:55,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,651 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,652 INFO L82 PathProgramCache]: Analyzing trace with hash -61332619, now seen corresponding path program 1 times [2019-10-22 11:24:55,652 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114061533] [2019-10-22 11:24:55,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,710 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 11:24:55,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114061533] [2019-10-22 11:24:55,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:55,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453098337] [2019-10-22 11:24:55,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:55,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:55,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:55,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:55,712 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-10-22 11:24:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,757 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-10-22 11:24:55,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:55,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 11:24:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,758 INFO L225 Difference]: With dead ends: 41 [2019-10-22 11:24:55,759 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:24:55,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:24:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:24:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2019-10-22 11:24:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:24:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-22 11:24:55,761 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-10-22 11:24:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,762 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-22 11:24:55,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-22 11:24:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:24:55,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,762 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,763 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-10-22 11:24:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1632976752, now seen corresponding path program 1 times [2019-10-22 11:24:55,764 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:55,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114326454] [2019-10-22 11:24:55,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:55,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,828 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 11:24:55,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114326454] [2019-10-22 11:24:55,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233135055] [2019-10-22 11:24:55,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 11:24:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,961 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:55,961 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-10-22 11:24:55,962 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,984 INFO L567 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2019-10-22 11:24:55,987 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,987 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2019-10-22 11:24:56,002 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 11:24:56,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:56,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:56,077 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 11:24:56,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1571781717] [2019-10-22 11:24:56,083 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 12 [2019-10-22 11:24:56,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:24:56,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:24:56,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:56,435 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 11:24:56,441 INFO L168 Benchmark]: Toolchain (without parser) took 3462.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 937.0 MB in the beginning and 877.1 MB in the end (delta: 59.9 MB). Peak memory consumption was 193.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,441 INFO L168 Benchmark]: CDTParser took 1.26 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:56,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.06 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,442 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,449 INFO L168 Benchmark]: RCFGBuilder took 443.46 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,449 INFO L168 Benchmark]: TraceAbstraction took 2442.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 877.1 MB in the end (delta: 209.5 MB). Peak memory consumption was 209.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:56,452 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 496.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.06 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.60 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 443.46 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2442.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 877.1 MB in the end (delta: 209.5 MB). Peak memory consumption was 209.5 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 11:24:58,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:58,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:58,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:58,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:58,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:58,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:58,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:58,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:58,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:58,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:58,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:58,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:58,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:58,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:58,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:58,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:58,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:58,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:58,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:58,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:58,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:58,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:58,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:58,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:58,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:58,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:58,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:58,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:58,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:58,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:58,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:58,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:58,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:58,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:58,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:58,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:58,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:58,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:58,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:58,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:58,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:58,443 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:58,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:58,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:58,444 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:58,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:58,444 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:58,444 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:58,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:58,445 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:58,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:24:58,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:24:58,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:58,445 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:24:58,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:24:58,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:58,447 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:58,447 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:58,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:58,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:58,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:58,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:58,449 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:58,449 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:58,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:58,449 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_83c31976-c59b-4c79-b15b-4df960ba2991/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 -> 5731971c09a136eb079f9cbecfc34cb6e82f7a1b [2019-10-22 11:24:58,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:58,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:58,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:58,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:58,489 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:58,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i [2019-10-22 11:24:58,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/7e8a9c28e/2b6b1b49e7354f7180a724d2b23d95c4/FLAGa19ba3774 [2019-10-22 11:24:58,963 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:58,964 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/sv-benchmarks/c/array-memsafety/openbsd_cstrcpy-alloca-2.i [2019-10-22 11:24:58,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/7e8a9c28e/2b6b1b49e7354f7180a724d2b23d95c4/FLAGa19ba3774 [2019-10-22 11:24:58,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/bin/utaipan/data/7e8a9c28e/2b6b1b49e7354f7180a724d2b23d95c4 [2019-10-22 11:24:58,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:58,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:58,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:58,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:58,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:58,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:58" (1/1) ... [2019-10-22 11:24:59,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2edb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59, skipping insertion in model container [2019-10-22 11:24:59,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:58" (1/1) ... [2019-10-22 11:24:59,008 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:59,046 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:59,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:59,371 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:59,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:59,524 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59 WrapperNode [2019-10-22 11:24:59,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:59,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:59,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:59,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:59,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:59,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:59,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:59,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:59,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... [2019-10-22 11:24:59,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:59,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:59,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:59,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:59,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 11:24:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-10-22 11:24:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-10-22 11:24:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:00,072 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:00,072 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:25:00,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:00 BoogieIcfgContainer [2019-10-22 11:25:00,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:00,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:00,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:00,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:00,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:58" (1/3) ... [2019-10-22 11:25:00,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa51965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:00, skipping insertion in model container [2019-10-22 11:25:00,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:59" (2/3) ... [2019-10-22 11:25:00,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa51965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:00, skipping insertion in model container [2019-10-22 11:25:00,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:00" (3/3) ... [2019-10-22 11:25:00,079 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca-2.i [2019-10-22 11:25:00,087 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:00,093 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-10-22 11:25:00,102 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-10-22 11:25:00,122 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:00,122 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:25:00,122 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:00,122 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:00,122 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:00,122 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:00,123 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:00,123 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 11:25:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:25:00,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:00,144 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:25:00,146 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-10-22 11:25:00,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:00,152 INFO L82 PathProgramCache]: Analyzing trace with hash 889510840, now seen corresponding path program 1 times [2019-10-22 11:25:00,161 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:00,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1136949769] [2019-10-22 11:25:00,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_83c31976-c59b-4c79-b15b-4df960ba2991/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 11:25:00,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:00,394 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 11:25:00,399 INFO L168 Benchmark]: Toolchain (without parser) took 1405.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -219.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:00,400 INFO L168 Benchmark]: CDTParser took 0.20 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 11:25:00,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -270.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:00,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.99 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:00,401 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:00,402 INFO L168 Benchmark]: RCFGBuilder took 459.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:00,403 INFO L168 Benchmark]: TraceAbstraction took 322.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:00,406 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 532.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -270.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.99 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 459.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 322.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 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...