./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_strcpy_original-2.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_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 de97c492eb836e8be50de68d3b6513e4c879ae2e .................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 de97c492eb836e8be50de68d3b6513e4c879ae2e ................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:48:38,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:48:38,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:48:38,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:48:38,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:48:38,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:48:38,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:48:38,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:48:38,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:48:38,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:48:38,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:48:38,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:48:38,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:48:38,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:48:38,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:48:38,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:48:38,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:48:38,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:48:38,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:48:38,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:48:38,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:48:38,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:48:38,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:48:38,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:48:38,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:48:38,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:48:38,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:48:38,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:48:38,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:48:38,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:48:38,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:48:38,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:48:38,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:48:38,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:48:38,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:48:38,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:48:38,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:48:38,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:48:38,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:48:38,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:48:38,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:48:38,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:48:38,699 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:48:38,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:48:38,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:48:38,700 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:48:38,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:48:38,701 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:48:38,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:48:38,701 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:48:38,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:48:38,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:48:38,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:48:38,702 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:48:38,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:48:38,702 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:48:38,702 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:48:38,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:48:38,703 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:48:38,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:48:38,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:48:38,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:48:38,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:48:38,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:48:38,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:48:38,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:48:38,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:48:38,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:48:38,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:48:38,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:48:38,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:48:38,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:48:38,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:48:38,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:48:38,707 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_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 -> de97c492eb836e8be50de68d3b6513e4c879ae2e [2019-11-26 02:48:38,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:48:38,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:48:38,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:48:38,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:48:38,881 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:48:38,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2019-11-26 02:48:38,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/9204f1c21/eb6bc4dddd19447eb0ba5d69b38377a6/FLAG94d3592fb [2019-11-26 02:48:39,362 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:48:39,363 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2019-11-26 02:48:39,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/9204f1c21/eb6bc4dddd19447eb0ba5d69b38377a6/FLAG94d3592fb [2019-11-26 02:48:39,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/9204f1c21/eb6bc4dddd19447eb0ba5d69b38377a6 [2019-11-26 02:48:39,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:48:39,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:48:39,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:39,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:48:39,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:48:39,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21963380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39, skipping insertion in model container [2019-11-26 02:48:39,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:48:39,429 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:48:39,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:39,732 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:48:39,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:39,778 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:48:39,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39 WrapperNode [2019-11-26 02:48:39,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:39,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:39,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:48:39,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:48:39,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:39,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:48:39,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:48:39,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:48:39,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:48:39,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:48:39,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:48:39,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:48:39,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:48:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:48:39,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:48:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:48:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:48:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:48:40,249 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:48:40,250 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:48:40,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:40 BoogieIcfgContainer [2019-11-26 02:48:40,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:48:40,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:48:40,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:48:40,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:48:40,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:48:39" (1/3) ... [2019-11-26 02:48:40,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37264ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:40, skipping insertion in model container [2019-11-26 02:48:40,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (2/3) ... [2019-11-26 02:48:40,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37264ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:40, skipping insertion in model container [2019-11-26 02:48:40,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:40" (3/3) ... [2019-11-26 02:48:40,259 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2019-11-26 02:48:40,267 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:48:40,273 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:48:40,284 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:48:40,306 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:48:40,306 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:48:40,306 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:48:40,306 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:48:40,307 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:48:40,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:48:40,307 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:48:40,307 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:48:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-26 02:48:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:48:40,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:40,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:40,325 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1167687316, now seen corresponding path program 1 times [2019-11-26 02:48:40,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:40,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523942043] [2019-11-26 02:48:40,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:40,455 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 02:48:40,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523942043] [2019-11-26 02:48:40,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:40,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:48:40,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878943006] [2019-11-26 02:48:40,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:48:40,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:40,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:48:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:40,473 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-26 02:48:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:40,520 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2019-11-26 02:48:40,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:48:40,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-26 02:48:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:40,530 INFO L225 Difference]: With dead ends: 25 [2019-11-26 02:48:40,531 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:48:40,533 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 02:48:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:48:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:48:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:48:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-26 02:48:40,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-26 02:48:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:40,563 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-26 02:48:40,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:48:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-26 02:48:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:48:40,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:40,564 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:40,564 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash -972732330, now seen corresponding path program 1 times [2019-11-26 02:48:40,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:40,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666537734] [2019-11-26 02:48:40,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:40,622 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 02:48:40,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666537734] [2019-11-26 02:48:40,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650404804] [2019-11-26 02:48:40,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:40,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:48:40,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:40,698 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 02:48:40,698 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:40,726 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 02:48:40,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494382282] [2019-11-26 02:48:40,749 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-26 02:48:40,749 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:48:40,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:48:40,761 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:48:40,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:48:41,362 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:48:41,734 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-11-26 02:48:42,044 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2019-11-26 02:48:42,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:48:42,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 10 [2019-11-26 02:48:42,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697855519] [2019-11-26 02:48:42,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:48:42,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:42,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:48:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:48:42,050 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-26 02:48:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:42,137 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-26 02:48:42,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:48:42,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-26 02:48:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:42,138 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:48:42,139 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:48:42,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:48:42,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:48:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:48:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:48:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-26 02:48:42,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-11-26 02:48:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:42,145 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-26 02:48:42,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:48:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-26 02:48:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:48:42,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:42,146 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:42,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:48:42,348 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:42,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1267938528, now seen corresponding path program 1 times [2019-11-26 02:48:42,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:42,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065670099] [2019-11-26 02:48:42,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:42,393 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 02:48:42,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065670099] [2019-11-26 02:48:42,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935845908] [2019-11-26 02:48:42,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:42,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:48:42,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:42,454 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 02:48:42,454 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:42,472 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 02:48:42,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304509272] [2019-11-26 02:48:42,474 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-26 02:48:42,475 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:48:42,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:48:42,475 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:48:42,476 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:48:43,001 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:48:43,132 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-11-26 02:48:43,372 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-11-26 02:48:43,661 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-11-26 02:48:43,823 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-11-26 02:48:43,825 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:48:43,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:48:43,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-26 02:48:43,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962837657] [2019-11-26 02:48:43,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:48:43,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:43,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:48:43,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:48:43,827 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2019-11-26 02:48:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:43,844 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-11-26 02:48:43,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:48:43,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-26 02:48:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:43,846 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:48:43,846 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:48:43,847 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:48:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:48:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:48:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:48:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-26 02:48:43,850 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-11-26 02:48:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:43,851 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-26 02:48:43,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:48:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-26 02:48:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:48:43,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:43,852 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:44,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:48:44,052 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1899312665, now seen corresponding path program 2 times [2019-11-26 02:48:44,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:44,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223793249] [2019-11-26 02:48:44,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:44,131 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 02:48:44,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223793249] [2019-11-26 02:48:44,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518044316] [2019-11-26 02:48:44,131 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:44,170 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:48:44,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:48:44,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-26 02:48:44,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:44,299 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 02:48:44,300 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:44,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:48:44,545 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 02:48:44,548 INFO L168 Benchmark]: Toolchain (without parser) took 5156.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -134.7 MB). Peak memory consumption was 82.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:44,548 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:44,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:44,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.67 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 02:48:44,549 INFO L168 Benchmark]: Boogie Preprocessor took 26.21 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 02:48:44,550 INFO L168 Benchmark]: RCFGBuilder took 397.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:44,550 INFO L168 Benchmark]: TraceAbstraction took 4294.38 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 100.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:44,553 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.67 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 26.21 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 397.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4294.38 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 100.0 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 02:48:46,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:48:46,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:48:46,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:48:46,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:48:46,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:48:46,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:48:46,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:48:46,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:48:46,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:48:46,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:48:46,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:48:46,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:48:46,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:48:46,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:48:46,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:48:46,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:48:46,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:48:46,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:48:46,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:48:46,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:48:46,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:48:46,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:48:46,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:48:46,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:48:46,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:48:46,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:48:46,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:48:46,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:48:46,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:48:46,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:48:46,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:48:46,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:48:46,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:48:46,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:48:46,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:48:46,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:48:46,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:48:46,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:48:46,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:48:46,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:48:46,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:48:46,519 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:48:46,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:48:46,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:48:46,520 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:48:46,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:48:46,521 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:48:46,521 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:48:46,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:48:46,521 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:48:46,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:48:46,522 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:48:46,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:48:46,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:48:46,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:48:46,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:48:46,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:48:46,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:48:46,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:48:46,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:48:46,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:48:46,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:48:46,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:48:46,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:48:46,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:48:46,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:48:46,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:48:46,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:48:46,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:48:46,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:48:46,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:48:46,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:48:46,527 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:48:46,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:48:46,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:48:46,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:48:46,528 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_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 -> de97c492eb836e8be50de68d3b6513e4c879ae2e [2019-11-26 02:48:46,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:48:46,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:48:46,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:48:46,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:48:46,809 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:48:46,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/../../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2019-11-26 02:48:46,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/42504dcf7/3542309f252346e7944f20dd749ff64f/FLAG8656602f1 [2019-11-26 02:48:47,244 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:48:47,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2019-11-26 02:48:47,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/42504dcf7/3542309f252346e7944f20dd749ff64f/FLAG8656602f1 [2019-11-26 02:48:47,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/bin/utaipan/data/42504dcf7/3542309f252346e7944f20dd749ff64f [2019-11-26 02:48:47,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:48:47,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:48:47,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:47,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:48:47,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:48:47,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580e4d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47, skipping insertion in model container [2019-11-26 02:48:47,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:48:47,300 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:48:47,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:47,510 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:48:47,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:47,550 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:48:47,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47 WrapperNode [2019-11-26 02:48:47,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:47,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:47,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:48:47,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:48:47,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:47,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:48:47,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:48:47,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:48:47,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... [2019-11-26 02:48:47,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:48:47,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:48:47,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:48:47,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:48:47,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:48:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:48:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:48:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:48:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:48:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:48:47,936 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:48:47,936 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:48:47,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:47 BoogieIcfgContainer [2019-11-26 02:48:47,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:48:47,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:48:47,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:48:47,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:48:47,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:48:47" (1/3) ... [2019-11-26 02:48:47,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cc1807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:47, skipping insertion in model container [2019-11-26 02:48:47,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:47" (2/3) ... [2019-11-26 02:48:47,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cc1807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:47, skipping insertion in model container [2019-11-26 02:48:47,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:47" (3/3) ... [2019-11-26 02:48:47,944 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2019-11-26 02:48:47,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:48:47,958 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:48:47,967 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:48:47,996 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:48:47,996 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:48:47,996 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:48:47,996 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:48:47,997 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:48:47,997 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:48:47,997 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:48:47,997 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:48:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:48:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:48:48,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:48,031 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:48,031 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 112467144, now seen corresponding path program 1 times [2019-11-26 02:48:48,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:48,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [388558643] [2019-11-26 02:48:48,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:48,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:48:48,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:48,143 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 02:48:48,143 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:48,146 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 02:48:48,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388558643] [2019-11-26 02:48:48,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:48,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:48:48,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744673436] [2019-11-26 02:48:48,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:48:48,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:48,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:48:48,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:48:48,162 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:48:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:48,175 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2019-11-26 02:48:48,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:48:48,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:48:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:48,183 INFO L225 Difference]: With dead ends: 33 [2019-11-26 02:48:48,183 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:48:48,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 02:48:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:48:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:48:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:48:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-26 02:48:48,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2019-11-26 02:48:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:48,215 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-26 02:48:48,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:48:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-26 02:48:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:48:48,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:48,216 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:48,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:48:48,419 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:48,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1877798305, now seen corresponding path program 1 times [2019-11-26 02:48:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:48,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [908235789] [2019-11-26 02:48:48,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:48,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:48:48,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:48,501 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 02:48:48,503 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:48,517 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 02:48:48,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [908235789] [2019-11-26 02:48:48,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:48,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:48:48,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718378488] [2019-11-26 02:48:48,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:48:48,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:48,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:48:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:48:48,520 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 4 states. [2019-11-26 02:48:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:48,549 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2019-11-26 02:48:48,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:48:48,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-26 02:48:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:48,551 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:48:48,551 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:48:48,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 02:48:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:48:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:48:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:48:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-26 02:48:48,556 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 12 [2019-11-26 02:48:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:48,557 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-26 02:48:48,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:48:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-26 02:48:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:48:48,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:48,558 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:48,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:48:48,760 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1224196673, now seen corresponding path program 1 times [2019-11-26 02:48:48,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:48,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [310409552] [2019-11-26 02:48:48,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:48,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:48:48,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:48,884 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 02:48:48,884 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:48,941 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 02:48:48,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [310409552] [2019-11-26 02:48:48,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550622072] [2019-11-26 02:48:48,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:48,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:48:48,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:49,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:49,194 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 02:48:49,194 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:49,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:49,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:49,404 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:48:49,405 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2019-11-26 02:48:49,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:49,406 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:48:49,410 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:48:49,410 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:48:49,411 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-11-26 02:48:49,443 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 02:48:49,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:48:49,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 17 [2019-11-26 02:48:49,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090645537] [2019-11-26 02:48:49,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-26 02:48:49,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:49,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-26 02:48:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:48:49,446 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 11 states. [2019-11-26 02:48:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:49,840 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-11-26 02:48:49,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-26 02:48:49,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2019-11-26 02:48:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:49,845 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:48:49,845 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:48:49,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:48:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:48:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-26 02:48:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:48:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-26 02:48:49,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2019-11-26 02:48:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:49,851 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-26 02:48:49,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-26 02:48:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-26 02:48:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:48:49,856 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:49,856 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:50,258 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 02:48:50,258 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1444694637, now seen corresponding path program 1 times [2019-11-26 02:48:50,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:50,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1137591768] [2019-11-26 02:48:50,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:50,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:48:50,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:50,355 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 02:48:50,356 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:50,407 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 02:48:50,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137591768] [2019-11-26 02:48:50,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042232929] [2019-11-26 02:48:50,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f62d7431-a410-45ec-8cdf-17527ac4ae26/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 02:48:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:50,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:48:50,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:50,477 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 02:48:50,478 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:48:50,496 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:48:50,496 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:48:50,496 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-11-26 02:48:50,549 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 02:48:50,550 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:48:50,567 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:48:50,567 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:48:50,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-26 02:48:50,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:50,679 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 02:48:50,679 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:51,230 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 02:48:51,230 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 02:48:51,234 INFO L168 Benchmark]: Toolchain (without parser) took 3970.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 961.8 MB in the beginning and 946.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 178.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:51,235 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:51,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:51,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -201.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:51,240 INFO L168 Benchmark]: Boogie Preprocessor took 37.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:51,243 INFO L168 Benchmark]: RCFGBuilder took 260.55 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:51,243 INFO L168 Benchmark]: TraceAbstraction took 3294.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.0 MB in the end (delta: 186.8 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:51,247 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 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 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 87.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -201.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 260.55 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3294.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.0 MB in the end (delta: 186.8 MB). Peak memory consumption was 186.8 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...