./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5c32c4c87bee5873040844586411da3e695cd61 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:32:14,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:32:14,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:32:14,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:32:14,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:32:14,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:32:14,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:32:14,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:32:14,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:32:14,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:32:14,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:32:14,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:32:14,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:32:14,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:32:14,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:32:14,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:32:14,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:32:14,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:32:14,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:32:14,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:32:14,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:32:14,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:32:14,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:32:14,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:32:14,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:32:14,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:32:14,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:32:14,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:32:14,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:32:14,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:32:14,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:32:14,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:32:14,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:32:14,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:32:14,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:32:14,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:32:14,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:32:14,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:32:14,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:32:14,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:32:14,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:32:14,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 12:32:14,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:32:14,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:32:14,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:32:14,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:32:14,802 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:32:14,803 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:32:14,803 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:32:14,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:32:14,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:32:14,803 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:32:14,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:32:14,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:32:14,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:32:14,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:32:14,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:32:14,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:32:14,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:32:14,807 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5c32c4c87bee5873040844586411da3e695cd61 [2020-12-09 12:32:15,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:32:15,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:32:15,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:32:15,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:32:15,020 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:32:15,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i [2020-12-09 12:32:15,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/data/abff6a4e4/d137495aa7fb4d049f92b79d0cd474c1/FLAG4e53a8c56 [2020-12-09 12:32:15,441 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:32:15,442 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i [2020-12-09 12:32:15,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/data/abff6a4e4/d137495aa7fb4d049f92b79d0cd474c1/FLAG4e53a8c56 [2020-12-09 12:32:15,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/data/abff6a4e4/d137495aa7fb4d049f92b79d0cd474c1 [2020-12-09 12:32:15,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:32:15,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:32:15,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:32:15,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:32:15,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:32:15,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311d7586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15, skipping insertion in model container [2020-12-09 12:32:15,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:32:15,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:32:15,589 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i[873,886] [2020-12-09 12:32:15,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:32:15,608 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:32:15,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i[873,886] [2020-12-09 12:32:15,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:32:15,630 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:32:15,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15 WrapperNode [2020-12-09 12:32:15,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:32:15,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:32:15,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:32:15,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:32:15,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:32:15,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:32:15,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:32:15,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:32:15,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... [2020-12-09 12:32:15,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:32:15,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:32:15,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:32:15,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:32:15,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/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 [2020-12-09 12:32:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:32:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:32:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:32:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:32:15,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:32:15,887 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 12:32:15,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:32:15 BoogieIcfgContainer [2020-12-09 12:32:15,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:32:15,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:32:15,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:32:15,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:32:15,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:32:15" (1/3) ... [2020-12-09 12:32:15,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc44927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:32:15, skipping insertion in model container [2020-12-09 12:32:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:32:15" (2/3) ... [2020-12-09 12:32:15,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc44927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:32:15, skipping insertion in model container [2020-12-09 12:32:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:32:15" (3/3) ... [2020-12-09 12:32:15,894 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark31_disjunctive.i [2020-12-09 12:32:15,904 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:32:15,906 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 12:32:15,913 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 12:32:15,929 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:32:15,929 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:32:15,929 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:32:15,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:32:15,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:32:15,930 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:32:15,930 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:32:15,930 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:32:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 12:32:15,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:32:15,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:32:15,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:32:15,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 12:32:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:32:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash 69488661, now seen corresponding path program 1 times [2020-12-09 12:32:15,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:32:15,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874289548] [2020-12-09 12:32:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:32:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:32:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:32:16,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874289548] [2020-12-09 12:32:16,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:32:16,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:32:16,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120277762] [2020-12-09 12:32:16,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:32:16,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:32:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:32:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:32:16,081 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-12-09 12:32:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:32:16,130 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-09 12:32:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:32:16,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 12:32:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:32:16,137 INFO L225 Difference]: With dead ends: 33 [2020-12-09 12:32:16,137 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 12:32:16,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:32:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 12:32:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-12-09 12:32:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 12:32:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 12:32:16,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2020-12-09 12:32:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:32:16,163 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 12:32:16,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:32:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 12:32:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 12:32:16,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:32:16,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 12:32:16,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:32:16,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 12:32:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:32:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2140818750, now seen corresponding path program 1 times [2020-12-09 12:32:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:32:16,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138949481] [2020-12-09 12:32:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:32:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:32:16,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:32:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:32:16,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:32:16,200 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:32:16,201 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:32:16,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:32:16,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:32:16 BoogieIcfgContainer [2020-12-09 12:32:16,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:32:16,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:32:16,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:32:16,216 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:32:16,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:32:15" (3/4) ... [2020-12-09 12:32:16,217 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 12:32:16,240 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d86ffc5-d055-429b-89aa-8e58f4b9b629/bin/utaipan/witness.graphml [2020-12-09 12:32:16,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:32:16,242 INFO L168 Benchmark]: Toolchain (without parser) took 780.56 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 48.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,242 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:32:16,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.90 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 83.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.69 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:32:16,243 INFO L168 Benchmark]: Boogie Preprocessor took 13.39 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 81.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,244 INFO L168 Benchmark]: RCFGBuilder took 215.75 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 76.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,244 INFO L168 Benchmark]: TraceAbstraction took 325.34 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 50.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,245 INFO L168 Benchmark]: Witness Printer took 24.78 ms. Allocated memory is still 104.9 MB. Free memory was 50.4 MB in the beginning and 48.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:32:16,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.90 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 83.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.69 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.39 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 81.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 215.75 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 76.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 325.34 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 50.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 24.78 ms. Allocated memory is still 104.9 MB. Free memory was 50.4 MB in the beginning and 48.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x < 0)) [L23] COND TRUE 1 [L24] COND FALSE !(x>=0) [L27] x+y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 17 SDslu, 12 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...