./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e0f1ca0eb16fbf37a6e5e5696159539bb44bf22 ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e0f1ca0eb16fbf37a6e5e5696159539bb44bf22 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:19:35,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:19:35,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:19:35,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:19:35,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:19:35,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:19:35,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:19:35,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:19:35,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:19:35,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:19:35,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:19:35,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:19:35,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:19:35,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:19:35,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:19:35,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:19:35,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:19:35,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:19:35,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:19:35,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:19:35,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:19:35,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:19:35,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:19:35,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:19:35,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:19:35,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:19:35,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:19:35,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:19:35,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:19:35,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:19:35,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:19:35,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:19:35,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:19:35,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:19:35,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:19:35,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:19:35,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:19:35,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:19:35,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:19:35,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:19:35,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:19:35,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:19:35,490 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:19:35,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:19:35,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:19:35,503 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:19:35,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:19:35,503 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:19:35,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:19:35,504 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:19:35,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:19:35,504 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:19:35,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:19:35,505 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:19:35,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:19:35,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:19:35,506 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:19:35,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:19:35,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:19:35,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:19:35,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:19:35,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:19:35,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:19:35,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:19:35,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:19:35,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:19:35,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:19:35,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:19:35,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:19:35,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:19:35,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:19:35,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:19:35,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:19:35,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:19:35,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:19:35,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:19:35,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:19:35,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:19:35,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:19:35,511 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/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 ! call(__VERIFIER_error())) ) 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 -> 6e0f1ca0eb16fbf37a6e5e5696159539bb44bf22 [2019-11-26 02:19:35,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:19:35,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:19:35,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:19:35,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:19:35,686 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:19:35,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2019-11-26 02:19:35,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/8efac625b/144878d69ec344ec8440494620c17dab/FLAG9e06cb4b4 [2019-11-26 02:19:36,243 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:19:36,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2019-11-26 02:19:36,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/8efac625b/144878d69ec344ec8440494620c17dab/FLAG9e06cb4b4 [2019-11-26 02:19:36,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/8efac625b/144878d69ec344ec8440494620c17dab [2019-11-26 02:19:36,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:19:36,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:19:36,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:36,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:19:36,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:19:36,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:36" (1/1) ... [2019-11-26 02:19:36,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe5c144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:36, skipping insertion in model container [2019-11-26 02:19:36,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:36" (1/1) ... [2019-11-26 02:19:36,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:19:36,701 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:19:36,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:36,977 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:19:37,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:37,018 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:19:37,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37 WrapperNode [2019-11-26 02:19:37,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:37,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:37,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:19:37,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:19:37,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:37,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:19:37,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:19:37,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:19:37,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... [2019-11-26 02:19:37,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:19:37,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:19:37,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:19:37,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:19:37,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 [2019-11-26 02:19:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:19:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:19:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:19:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:19:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:19:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:19:37,535 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:19:37,536 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:19:37,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:37 BoogieIcfgContainer [2019-11-26 02:19:37,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:19:37,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:19:37,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:19:37,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:19:37,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:19:36" (1/3) ... [2019-11-26 02:19:37,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f8043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:37, skipping insertion in model container [2019-11-26 02:19:37,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:37" (2/3) ... [2019-11-26 02:19:37,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f8043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:37, skipping insertion in model container [2019-11-26 02:19:37,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:37" (3/3) ... [2019-11-26 02:19:37,544 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2019-11-26 02:19:37,552 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:19:37,558 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:19:37,568 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:19:37,588 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:19:37,588 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:19:37,588 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:19:37,588 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:19:37,588 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:19:37,589 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:19:37,589 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:19:37,589 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:19:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:19:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:19:37,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:37,608 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:37,608 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2051024512, now seen corresponding path program 1 times [2019-11-26 02:19:37,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:37,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275922919] [2019-11-26 02:19:37,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:37,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275922919] [2019-11-26 02:19:37,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:37,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:19:37,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853191736] [2019-11-26 02:19:37,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:19:37,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:19:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:19:37,753 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-26 02:19:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:37,777 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2019-11-26 02:19:37,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:19:37,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-26 02:19:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:37,785 INFO L225 Difference]: With dead ends: 21 [2019-11-26 02:19:37,785 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:19:37,788 INFO L630 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 [2019-11-26 02:19:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:19:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:19:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:19:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 02:19:37,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2019-11-26 02:19:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:37,814 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 02:19:37,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:19:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 02:19:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:19:37,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:37,815 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:37,815 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1937685945, now seen corresponding path program 1 times [2019-11-26 02:19:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:37,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337250005] [2019-11-26 02:19:37,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:37,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337250005] [2019-11-26 02:19:37,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830377367] [2019-11-26 02:19:37,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 [2019-11-26 02:19:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:37,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:19:37,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:37,975 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:38,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1983438642] [2019-11-26 02:19:38,026 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-26 02:19:38,027 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:19:38,031 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:19:38,037 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:19:38,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:19:38,571 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:19:38,865 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-11-26 02:19:39,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:19:39,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 10 [2019-11-26 02:19:39,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212590290] [2019-11-26 02:19:39,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:19:39,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:19:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:19:39,089 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 7 states. [2019-11-26 02:19:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:39,141 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-26 02:19:39,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:19:39,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:19:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:39,143 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:19:39,143 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:19:39,144 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:19:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:19:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:19:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:19:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-26 02:19:39,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-26 02:19:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:39,147 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-26 02:19:39,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:19:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-26 02:19:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:19:39,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:39,148 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:39,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:39,351 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:39,351 INFO L82 PathProgramCache]: Analyzing trace with hash 806895636, now seen corresponding path program 1 times [2019-11-26 02:19:39,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:39,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424505752] [2019-11-26 02:19:39,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:19:39,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424505752] [2019-11-26 02:19:39,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096359101] [2019-11-26 02:19:39,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:39,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:19:39,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:19:39,438 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:19:39,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009369932] [2019-11-26 02:19:39,462 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-26 02:19:39,462 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:19:39,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:19:39,463 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:19:39,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:19:39,922 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:19:40,035 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-11-26 02:19:40,255 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-11-26 02:19:40,501 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:19:40,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:19:40,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-26 02:19:40,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57288121] [2019-11-26 02:19:40,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:19:40,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:19:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:19:40,503 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2019-11-26 02:19:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:40,521 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-26 02:19:40,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:19:40,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:19:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:40,523 INFO L225 Difference]: With dead ends: 26 [2019-11-26 02:19:40,523 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:19:40,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:19:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:19:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:19:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:19:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-26 02:19:40,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-26 02:19:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:40,527 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-26 02:19:40,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:19:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-26 02:19:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:19:40,530 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:40,530 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:40,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:40,734 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -743208761, now seen corresponding path program 2 times [2019-11-26 02:19:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:40,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103492581] [2019-11-26 02:19:40,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:19:40,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103492581] [2019-11-26 02:19:40,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545413953] [2019-11-26 02:19:40,816 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:40,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:19:40,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:19:40,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-26 02:19:40,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:19:40,985 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:41,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:41,229 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:19:41,233 INFO L168 Benchmark]: Toolchain (without parser) took 4566.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:41,233 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:41,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -172.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:41,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:41,235 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:41,235 INFO L168 Benchmark]: RCFGBuilder took 418.63 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:41,236 INFO L168 Benchmark]: TraceAbstraction took 3693.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.7 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:41,238 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 351.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -172.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 418.63 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3693.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.7 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:19:43,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:19:43,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:19:43,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:19:43,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:19:43,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:19:43,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:19:43,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:19:43,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:19:43,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:19:43,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:19:43,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:19:43,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:19:43,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:19:43,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:19:43,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:19:43,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:19:43,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:19:43,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:19:43,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:19:43,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:19:43,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:19:43,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:19:43,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:19:43,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:19:43,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:19:43,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:19:43,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:19:43,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:19:43,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:19:43,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:19:43,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:19:43,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:19:43,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:19:43,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:19:43,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:19:43,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:19:43,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:19:43,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:19:43,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:19:43,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:19:43,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:19:43,197 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:19:43,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:19:43,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:19:43,200 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:19:43,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:19:43,201 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:19:43,201 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:19:43,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:19:43,202 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:19:43,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:19:43,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:19:43,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:19:43,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:19:43,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:19:43,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:19:43,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:19:43,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:19:43,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:19:43,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:19:43,206 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:19:43,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:19:43,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:19:43,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:19:43,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:19:43,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:19:43,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:19:43,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:19:43,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:19:43,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:19:43,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:19:43,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:19:43,210 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:19:43,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:19:43,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:19:43,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:19:43,211 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/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 ! call(__VERIFIER_error())) ) 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 -> 6e0f1ca0eb16fbf37a6e5e5696159539bb44bf22 [2019-11-26 02:19:43,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:19:43,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:19:43,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:19:43,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:19:43,488 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:19:43,489 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2019-11-26 02:19:43,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/6df579d6d/eea6dbf40bfc4ffa9f1d0c783c67d5d0/FLAG3ef0a6ee5 [2019-11-26 02:19:43,923 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:19:43,924 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2019-11-26 02:19:43,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/6df579d6d/eea6dbf40bfc4ffa9f1d0c783c67d5d0/FLAG3ef0a6ee5 [2019-11-26 02:19:44,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/data/6df579d6d/eea6dbf40bfc4ffa9f1d0c783c67d5d0 [2019-11-26 02:19:44,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:19:44,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:19:44,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:44,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:19:44,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:19:44,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea5418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44, skipping insertion in model container [2019-11-26 02:19:44,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:19:44,385 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:19:44,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:44,616 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:19:44,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:44,661 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:19:44,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44 WrapperNode [2019-11-26 02:19:44,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:44,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:44,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:19:44,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:19:44,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:44,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:19:44,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:19:44,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:19:44,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... [2019-11-26 02:19:44,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:19:44,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:19:44,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:19:44,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:19:44,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 [2019-11-26 02:19:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:19:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:19:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:19:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:19:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:19:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:19:45,107 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:19:45,108 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:19:45,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:45 BoogieIcfgContainer [2019-11-26 02:19:45,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:19:45,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:19:45,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:19:45,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:19:45,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:19:44" (1/3) ... [2019-11-26 02:19:45,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@850719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:45, skipping insertion in model container [2019-11-26 02:19:45,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:44" (2/3) ... [2019-11-26 02:19:45,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@850719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:45, skipping insertion in model container [2019-11-26 02:19:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:45" (3/3) ... [2019-11-26 02:19:45,137 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2019-11-26 02:19:45,147 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:19:45,157 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:19:45,188 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:19:45,242 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:19:45,242 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:19:45,242 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:19:45,242 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:19:45,242 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:19:45,243 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:19:45,243 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:19:45,243 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:19:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-26 02:19:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:19:45,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:45,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:45,263 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash 254868323, now seen corresponding path program 1 times [2019-11-26 02:19:45,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:19:45,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2027601312] [2019-11-26 02:19:45,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/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 [2019-11-26 02:19:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:45,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:19:45,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:45,390 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:45,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2027601312] [2019-11-26 02:19:45,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:45,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:19:45,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442044086] [2019-11-26 02:19:45,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:19:45,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:19:45,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:19:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:19:45,419 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-26 02:19:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:45,435 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2019-11-26 02:19:45,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:19:45,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:19:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:45,447 INFO L225 Difference]: With dead ends: 31 [2019-11-26 02:19:45,447 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:19:45,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:19:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:19:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:19:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:19:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-26 02:19:45,483 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2019-11-26 02:19:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:45,484 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-26 02:19:45,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:19:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-26 02:19:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:19:45,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:45,485 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:45,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:19:45,688 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1105866364, now seen corresponding path program 1 times [2019-11-26 02:19:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:19:45,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2023774002] [2019-11-26 02:19:45,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:19:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:45,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:19:45,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:45,780 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:45,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2023774002] [2019-11-26 02:19:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:45,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:19:45,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385554679] [2019-11-26 02:19:45,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:19:45,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:19:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:19:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:19:45,798 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2019-11-26 02:19:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:45,825 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-26 02:19:45,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:19:45,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:19:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:45,827 INFO L225 Difference]: With dead ends: 25 [2019-11-26 02:19:45,827 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 02:19:45,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:19:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 02:19:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-26 02:19:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 02:19:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-26 02:19:45,833 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2019-11-26 02:19:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:45,835 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-26 02:19:45,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:19:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-11-26 02:19:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:19:45,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:45,842 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:46,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:19:46,045 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:46,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2061609756, now seen corresponding path program 1 times [2019-11-26 02:19:46,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:19:46,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [322211350] [2019-11-26 02:19:46,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:19:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:46,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:19:46,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:46,155 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:19:46,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322211350] [2019-11-26 02:19:46,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987859831] [2019-11-26 02:19:46,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:46,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:19:46,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:19:46,374 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:19:46,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:19:46,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2019-11-26 02:19:46,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075845300] [2019-11-26 02:19:46,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:19:46,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:19:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:19:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:19:46,432 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 6 states. [2019-11-26 02:19:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:46,505 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-11-26 02:19:46,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:19:46,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-26 02:19:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:46,508 INFO L225 Difference]: With dead ends: 26 [2019-11-26 02:19:46,508 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:19:46,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:19:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:19:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:19:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:19:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-26 02:19:46,517 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2019-11-26 02:19:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:46,517 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-26 02:19:46,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:19:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-26 02:19:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:19:46,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:46,519 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:46,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:46,923 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:46,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1853246190, now seen corresponding path program 1 times [2019-11-26 02:19:46,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:19:46,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1672555564] [2019-11-26 02:19:46,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:19:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:47,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:19:47,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:19:47,061 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:19:47,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1672555564] [2019-11-26 02:19:47,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810849657] [2019-11-26 02:19:47,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f57e561d-7064-41d9-bbc1-fc620a309338/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:47,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:19:47,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:19:47,274 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-26 02:19:47,275 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:19:47,292 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:19:47,293 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:19:47,293 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-11-26 02:19:47,365 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2019-11-26 02:19:47,366 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:19:47,389 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:19:47,390 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:19:47,390 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-26 02:19:47,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:19:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:19:47,533 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:19:48,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:19:48,103 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:19:48,107 INFO L168 Benchmark]: Toolchain (without parser) took 3761.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 956.4 MB in the beginning and 997.5 MB in the end (delta: -41.1 MB). Peak memory consumption was 120.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,107 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:48,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.52 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,109 INFO L168 Benchmark]: Boogie Preprocessor took 34.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,110 INFO L168 Benchmark]: RCFGBuilder took 313.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,111 INFO L168 Benchmark]: TraceAbstraction took 2994.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 997.5 MB in the end (delta: 137.1 MB). Peak memory consumption was 137.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:48,114 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.52 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 313.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2994.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 997.5 MB in the end (delta: 137.1 MB). Peak memory consumption was 137.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...