./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/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 64bit --witnessprinter.graph.data.programhash 282a32bc5fb3d70423f87a450340f7a26ab0f093 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:30:55,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:55,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:55,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:55,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:55,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:55,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:55,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:55,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:55,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:55,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:55,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:55,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:55,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:55,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:55,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:55,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:55,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:55,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:55,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:55,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:55,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:55,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:55,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:55,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:55,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:55,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:55,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:55,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:55,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:55,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:55,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:55,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:55,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:55,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:55,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:55,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:55,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:55,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:55,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:55,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:30:55,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:55,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:55,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:55,569 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:55,569 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:55,569 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:55,570 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:55,570 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:55,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:55,570 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:55,571 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:55,571 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:55,571 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:55,571 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:55,572 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:55,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:55,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:30:55,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:55,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:55,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:55,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:55,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:55,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:30:55,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:55,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:55,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:55,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:55,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:55,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:55,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:55,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:55,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:55,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:55,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:55,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:55,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:55,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:55,578 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_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2020-12-03 12:30:55,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:30:55,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:30:55,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:30:55,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:30:55,880 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:30:55,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-12-03 12:30:55,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/data/a90c4d54f/ed28c721c0b742a297e41ab282e2c98b/FLAG7616d1b00 [2020-12-03 12:30:56,428 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:30:56,428 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-12-03 12:30:56,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/data/a90c4d54f/ed28c721c0b742a297e41ab282e2c98b/FLAG7616d1b00 [2020-12-03 12:30:56,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/data/a90c4d54f/ed28c721c0b742a297e41ab282e2c98b [2020-12-03 12:30:56,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:30:56,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:30:56,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:56,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:30:56,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:30:56,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:56" (1/1) ... [2020-12-03 12:30:56,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7114e33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:56, skipping insertion in model container [2020-12-03 12:30:56,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:56" (1/1) ... [2020-12-03 12:30:56,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:30:56,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:30:57,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:57,054 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:30:57,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:57,098 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:30:57,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57 WrapperNode [2020-12-03 12:30:57,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:57,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:57,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:30:57,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:30:57,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:57,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:30:57,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:30:57,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:30:57,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... [2020-12-03 12:30:57,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:30:57,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:30:57,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:30:57,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:30:57,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/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 [2020-12-03 12:30:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:30:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:30:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:30:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:30:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:30:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:30:57,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:30:57,500 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-03 12:30:57,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:57 BoogieIcfgContainer [2020-12-03 12:30:57,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:30:57,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:30:57,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:30:57,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:30:57,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:30:56" (1/3) ... [2020-12-03 12:30:57,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44364183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:57, skipping insertion in model container [2020-12-03 12:30:57,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:57" (2/3) ... [2020-12-03 12:30:57,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44364183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:57, skipping insertion in model container [2020-12-03 12:30:57,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:57" (3/3) ... [2020-12-03 12:30:57,512 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2020-12-03 12:30:57,526 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:30:57,529 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:30:57,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:30:57,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:30:57,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:30:57,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:30:57,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:30:57,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:30:57,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:30:57,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:30:57,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:30:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-03 12:30:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:30:57,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:57,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:30:57,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash 87402, now seen corresponding path program 1 times [2020-12-03 12:30:57,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:57,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357351711] [2020-12-03 12:30:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:57,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357351711] [2020-12-03 12:30:57,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:57,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:57,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209890344] [2020-12-03 12:30:57,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:57,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:57,782 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-12-03 12:30:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:57,837 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-12-03 12:30:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:57,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-12-03 12:30:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:57,846 INFO L225 Difference]: With dead ends: 29 [2020-12-03 12:30:57,847 INFO L226 Difference]: Without dead ends: 17 [2020-12-03 12:30:57,849 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 [2020-12-03 12:30:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-03 12:30:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-03 12:30:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-03 12:30:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-03 12:30:57,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2020-12-03 12:30:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:57,883 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-03 12:30:57,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-03 12:30:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:30:57,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:57,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:30:57,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:30:57,884 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2709508, now seen corresponding path program 1 times [2020-12-03 12:30:57,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548627679] [2020-12-03 12:30:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:57,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548627679] [2020-12-03 12:30:57,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:57,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:57,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274694736] [2020-12-03 12:30:57,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:57,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:57,924 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-12-03 12:30:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:57,950 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-12-03 12:30:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:57,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-03 12:30:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:57,967 INFO L225 Difference]: With dead ends: 15 [2020-12-03 12:30:57,967 INFO L226 Difference]: Without dead ends: 14 [2020-12-03 12:30:57,968 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 [2020-12-03 12:30:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-03 12:30:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-03 12:30:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-03 12:30:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-12-03 12:30:57,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2020-12-03 12:30:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:57,973 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-12-03 12:30:57,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-12-03 12:30:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:30:57,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:57,974 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-12-03 12:30:57,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:30:57,974 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:57,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:57,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1691127274, now seen corresponding path program 1 times [2020-12-03 12:30:57,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:57,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373098345] [2020-12-03 12:30:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:30:58,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373098345] [2020-12-03 12:30:58,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:58,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:58,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042756055] [2020-12-03 12:30:58,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:30:58,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:58,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:30:58,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:30:58,031 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2020-12-03 12:30:58,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:58,041 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-03 12:30:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:30:58,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:30:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:58,043 INFO L225 Difference]: With dead ends: 14 [2020-12-03 12:30:58,043 INFO L226 Difference]: Without dead ends: 13 [2020-12-03 12:30:58,044 INFO L677 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 [2020-12-03 12:30:58,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-03 12:30:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-03 12:30:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-03 12:30:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-03 12:30:58,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2020-12-03 12:30:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:58,048 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-03 12:30:58,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:30:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-03 12:30:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 12:30:58,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:58,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:58,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:30:58,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash -402840199, now seen corresponding path program 1 times [2020-12-03 12:30:58,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:58,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711874462] [2020-12-03 12:30:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711874462] [2020-12-03 12:30:58,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463657129] [2020-12-03 12:30:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/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 [2020-12-03 12:30:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:58,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:30:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:58,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:58,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [407672281] [2020-12-03 12:30:58,438 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-03 12:30:58,438 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:58,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:58,447 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:58,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:59,177 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:59,380 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-03 12:30:59,770 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-03 12:30:59,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:30:59,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 14 [2020-12-03 12:30:59,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501242284] [2020-12-03 12:30:59,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 12:30:59,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 12:30:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-03 12:30:59,912 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 9 states. [2020-12-03 12:31:00,120 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-03 12:31:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:00,181 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-12-03 12:31:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:31:00,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-03 12:31:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:00,183 INFO L225 Difference]: With dead ends: 12 [2020-12-03 12:31:00,183 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:31:00,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-12-03 12:31:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:31:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:31:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:31:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:31:00,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-03 12:31:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:00,187 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:31:00,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 12:31:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:31:00,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:31:00,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-12-03 12:31:00,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:31:00,582 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-03 12:31:00,652 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-03 12:31:00,653 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-03 12:31:00,653 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-03 12:31:00,653 INFO L265 CegarLoopResult]: At program point L19(lines 19 26) the Hoare annotation is: true [2020-12-03 12:31:00,653 INFO L262 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-12-03 12:31:00,654 INFO L262 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-12-03 12:31:00,656 INFO L258 CegarLoopResult]: At program point L15-5(lines 15 17) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~i~0))) (and (let ((.cse0 (<= 0 (+ ULTIMATE.start_main_~k~0 2147483648))) (.cse2 (<= ULTIMATE.start_main_~k~0 2147483647))) (or (and .cse0 .cse1 .cse2) (and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0.base|) (= 4192 (select |#length| |ULTIMATE.start_main_~#a~0.base|)) (< 0 |#StackHeapBarrier|) (= (select |#valid| 0) 0) .cse0 (= (select |#valid| |ULTIMATE.start_main_~#a~0.base|) 1) .cse2))) (let ((.cse3 (<= |#NULL.base| 0)) (.cse4 (<= 0 |#NULL.offset|)) (.cse5 (<= 0 |ULTIMATE.start_main_~#a~0.offset|)) (.cse6 (<= 0 |#NULL.base|)) (.cse7 (<= |ULTIMATE.start_main_~#a~0.offset| 0)) (.cse8 (<= |#NULL.offset| 0))) (or (and (<= ULTIMATE.start_main_~i~0 2147483647) .cse3 .cse4 .cse1 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~#a~0.base|) .cse7 .cse8 (<= 0 |#StackHeapBarrier|)) (and (<= 0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))))) [2020-12-03 12:31:00,656 INFO L262 CegarLoopResult]: For program point L15-6(lines 11 28) no Hoare annotation was computed. [2020-12-03 12:31:00,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-12-03 12:31:00,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:31:00,657 INFO L262 CegarLoopResult]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2020-12-03 12:31:00,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-12-03 12:31:00,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:31:00,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-03 12:31:00,659 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|))) (and (= 23 (select .cse0 |ULTIMATE.start_main_~#a~0.offset|)) (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~i~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (= |#NULL.base| 0) (= 42 (select .cse0 (+ |ULTIMATE.start_main_~#a~0.offset| (* ULTIMATE.start_main_~k~0 4)))) (<= 0 |ULTIMATE.start_main_~#a~0.base|) (<= 1048 ULTIMATE.start_main_~i~0) (= |ULTIMATE.start_main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~k~0) (< ULTIMATE.start_main_~k~0 1048) (<= 0 |#StackHeapBarrier|))) [2020-12-03 12:31:00,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:31:00 BoogieIcfgContainer [2020-12-03 12:31:00,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:31:00,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:31:00,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:31:00,701 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:31:00,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:57" (3/4) ... [2020-12-03 12:31:00,705 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:31:00,716 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-03 12:31:00,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:31:00,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:31:00,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b26f68c0-b3aa-41d8-8571-9b3a74c24cdd/bin/utaipan/witness.graphml [2020-12-03 12:31:00,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:31:00,778 INFO L168 Benchmark]: Toolchain (without parser) took 3950.48 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 55.0 MB in the beginning and 58.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,779 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 46.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:00,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.34 ms. Allocated memory is still 86.0 MB. Free memory was 54.8 MB in the beginning and 64.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.01 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:00,782 INFO L168 Benchmark]: Boogie Preprocessor took 22.36 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,782 INFO L168 Benchmark]: RCFGBuilder took 346.49 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 45.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,782 INFO L168 Benchmark]: TraceAbstraction took 3195.24 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 44.7 MB in the beginning and 60.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,783 INFO L168 Benchmark]: Witness Printer took 75.81 ms. Allocated memory is still 132.1 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:00,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 46.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.34 ms. Allocated memory is still 86.0 MB. Free memory was 54.8 MB in the beginning and 64.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.01 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.36 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 346.49 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 45.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3195.24 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 44.7 MB in the beginning and 60.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 75.81 ms. Allocated memory is still 132.1 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((0 <= k + 2147483648 && 1 <= i) && k <= 2147483647) || ((((((unknown-#StackHeapBarrier-unknown < a && 4192 == unknown-#length-unknown[a]) && 0 < unknown-#StackHeapBarrier-unknown) && \valid[0] == 0) && 0 <= k + 2147483648) && \valid[a] == 1) && k <= 2147483647)) && ((((((((((i <= 2147483647 && #NULL <= 0) && 0 <= #NULL) && 1 <= i) && 0 <= a) && 0 <= #NULL) && 0 <= a) && a <= 0) && #NULL <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= i && i <= 0) && #NULL <= 0) && 0 <= #NULL) && 0 <= a) && 0 <= #NULL) && a <= 0) && #NULL <= 0)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((((23 == unknown-#memory_int-unknown[a][a] && x <= 2147483647) && i <= 2147483647) && 0 <= x + 2147483648) && #NULL == 0) && 42 == unknown-#memory_int-unknown[a][a + k * 4]) && 0 <= a) && 1048 <= i) && a == 0) && #NULL == 0) && 0 <= k) && k < 1048) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 31 SDslu, 41 SDs, 0 SdLazy, 54 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 156 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 SizeOfPredicates, 1 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/5 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: OVERALL_TIME[ms]: 740, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 451, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 437, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 177, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 35, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 54, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 165, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 12, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 473, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 473, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...