./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/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 8a833a1b9e7471f6481f3d298fb7b827e4068305 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:14,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:14,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:14,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:14,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:14,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:14,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:14,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:14,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:14,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:14,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:14,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:14,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:14,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:14,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:14,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:14,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:14,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:14,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:14,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:14,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:14,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:14,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:14,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:14,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:14,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:14,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:14,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:14,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:14,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:14,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:14,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:14,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:14,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:14,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:14,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:14,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:14,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:14,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:14,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:14,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:14,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:40:14,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:14,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:14,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:14,539 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:14,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:14,540 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:14,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:14,540 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:14,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:14,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:14,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:14,542 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:14,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:14,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:14,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:14,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:14,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:14,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:14,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:14,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:14,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:14,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:14,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:14,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:14,545 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:40:14,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:14,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:14,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:14,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:14,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:14,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:14,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:14,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:14,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:14,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:14,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:14,549 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:14,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:14,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:14,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:14,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:14,550 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_bce57a72-c18c-4b31-9311-6dbfdd0f3916/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a833a1b9e7471f6481f3d298fb7b827e4068305 [2020-11-28 07:40:14,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:14,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:14,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:14,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:14,876 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:14,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-28 07:40:14,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/data/e2c6cb1dc/c9d2ac4a0e9c4cadbe39d7b74ae3efca/FLAGb20f7ff62 [2020-11-28 07:40:15,447 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:15,448 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-28 07:40:15,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/data/e2c6cb1dc/c9d2ac4a0e9c4cadbe39d7b74ae3efca/FLAGb20f7ff62 [2020-11-28 07:40:15,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/data/e2c6cb1dc/c9d2ac4a0e9c4cadbe39d7b74ae3efca [2020-11-28 07:40:15,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:15,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:15,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:15,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:15,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:15,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:15" (1/1) ... [2020-11-28 07:40:15,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ed98a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:15, skipping insertion in model container [2020-11-28 07:40:15,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:15" (1/1) ... [2020-11-28 07:40:15,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:15,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:16,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:16,072 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:16,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:16,114 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:16,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16 WrapperNode [2020-11-28 07:40:16,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:16,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:16,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:16,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:16,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:16,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:16,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:16,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:16,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:16,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:16,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:16,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:16,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/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 [2020-11-28 07:40:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:16,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:16,625 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:40:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:16 BoogieIcfgContainer [2020-11-28 07:40:16,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:16,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:16,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:16,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:16,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:15" (1/3) ... [2020-11-28 07:40:16,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7031806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:16, skipping insertion in model container [2020-11-28 07:40:16,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16" (2/3) ... [2020-11-28 07:40:16,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7031806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:16, skipping insertion in model container [2020-11-28 07:40:16,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:16" (3/3) ... [2020-11-28 07:40:16,634 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i [2020-11-28 07:40:16,650 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:16,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:40:16,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:40:16,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:16,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:16,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:16,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:16,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:16,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:16,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:16,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:40:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:40:16,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:16,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:40:16,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:16,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2271356, now seen corresponding path program 1 times [2020-11-28 07:40:16,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:16,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611075603] [2020-11-28 07:40:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611075603] [2020-11-28 07:40:16,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:16,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:16,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208646273] [2020-11-28 07:40:16,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:16,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:16,894 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-11-28 07:40:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:16,983 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-28 07:40:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:16,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:40:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:16,997 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:40:16,998 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:40:17,001 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 [2020-11-28 07:40:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:40:17,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:40:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:40:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 07:40:17,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2020-11-28 07:40:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,041 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 07:40:17,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 07:40:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:40:17,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:40:17,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:17,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash 70412086, now seen corresponding path program 1 times [2020-11-28 07:40:17,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17829553] [2020-11-28 07:40:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17829553] [2020-11-28 07:40:17,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:17,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085725212] [2020-11-28 07:40:17,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:17,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:17,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:17,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:17,125 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-28 07:40:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,141 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 07:40:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:17,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:40:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,143 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:40:17,143 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:40:17,144 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 [2020-11-28 07:40:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:40:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:40:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:40:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:40:17,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:40:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,147 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:40:17,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:40:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:17,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:17,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:17,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2112192578, now seen corresponding path program 1 times [2020-11-28 07:40:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064917169] [2020-11-28 07:40:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064917169] [2020-11-28 07:40:17,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:17,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621727780] [2020-11-28 07:40:17,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:17,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:17,222 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 07:40:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,262 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 07:40:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:17,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:40:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,264 INFO L225 Difference]: With dead ends: 9 [2020-11-28 07:40:17,264 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:40:17,265 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 [2020-11-28 07:40:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:40:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:40:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:40:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:40:17,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:40:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,267 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:40:17,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:40:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:17,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:17,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:17,268 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:17,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1053460424, now seen corresponding path program 1 times [2020-11-28 07:40:17,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445499034] [2020-11-28 07:40:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445499034] [2020-11-28 07:40:17,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:17,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535073206] [2020-11-28 07:40:17,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:17,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:17,338 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-28 07:40:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,398 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 07:40:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:17,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:40:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,400 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:40:17,400 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:40:17,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:40:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:40:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:40:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 07:40:17,404 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-28 07:40:17,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,404 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 07:40:17,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 07:40:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:40:17,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2020-11-28 07:40:17,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:17,405 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,406 INFO L82 PathProgramCache]: Analyzing trace with hash -542918662, now seen corresponding path program 1 times [2020-11-28 07:40:17,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118892194] [2020-11-28 07:40:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118892194] [2020-11-28 07:40:17,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065049419] [2020-11-28 07:40:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/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 [2020-11-28 07:40:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:40:17,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:40:17,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [234375119] [2020-11-28 07:40:17,897 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-28 07:40:17,897 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:17,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:17,908 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:17,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:18,404 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:18,814 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-11-28 07:40:19,182 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-11-28 07:40:19,448 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-11-28 07:40:19,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:19,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 7] total 18 [2020-11-28 07:40:19,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361744218] [2020-11-28 07:40:19,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:19,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:40:19,613 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-11-28 07:40:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:19,664 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-28 07:40:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:19,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:40:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:19,665 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:40:19,665 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:19,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:40:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:19,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-28 07:40:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:19,667 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:19,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:19,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:19,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:19,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:20,008 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-11-28 07:40:20,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:40:20,013 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:20,013 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:40:20,013 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 07:40:20,013 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= |#t~string1.offset| 0) (= (select |#length| |#t~string1.base|) 26) (= |#NULL.base| 0) (= (select .cse0 |#t~string0.offset|) 48) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= (select |#valid| 0) 0) (= 2 (select |#length| |#t~string0.base|)) (<= ULTIMATE.start_main_~y~0 2147483647) (< |#StackHeapBarrier| |#t~string0.base|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~x~0) (= (select |#valid| |#t~string0.base|) 1) (< 0 |#StackHeapBarrier|) (< |#StackHeapBarrier| |#t~string1.base|) (= |#NULL.offset| 0) (= (select |#valid| |#t~string1.base|) 1) (= |#t~string0.offset| 0))) [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L270 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-28 07:40:20,014 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 07:40:20,027 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,028 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,028 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,029 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,029 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,029 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,030 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,030 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,030 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,047 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,048 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,048 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,049 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,049 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,049 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,049 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,050 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,050 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:20 BoogieIcfgContainer [2020-11-28 07:40:20,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:20,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:20,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:20,061 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:20,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:16" (3/4) ... [2020-11-28 07:40:20,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:20,079 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 07:40:20,079 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:40:20,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:20,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:20,131 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bce57a72-c18c-4b31-9311-6dbfdd0f3916/bin/utaipan/witness.graphml [2020-11-28 07:40:20,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:20,132 INFO L168 Benchmark]: Toolchain (without parser) took 4323.38 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 91.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,133 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:20,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.98 ms. Allocated memory is still 94.4 MB. Free memory was 60.0 MB in the beginning and 71.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,134 INFO L168 Benchmark]: Boogie Preprocessor took 37.97 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 808.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:20,135 INFO L168 Benchmark]: RCFGBuilder took 432.98 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 53.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,135 INFO L168 Benchmark]: TraceAbstraction took 3431.97 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 37.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,135 INFO L168 Benchmark]: Witness Printer took 71.37 ms. Allocated memory is still 115.3 MB. Free memory was 37.8 MB in the beginning and 91.4 MB in the end (delta: -53.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.98 ms. Allocated memory is still 94.4 MB. Free memory was 60.0 MB in the beginning and 71.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.97 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 69.0 MB in the end (delta: 808.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 432.98 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 53.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3431.97 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 37.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.37 ms. Allocated memory is still 115.3 MB. Free memory was 37.8 MB in the beginning and 91.4 MB in the end (delta: -53.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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: 23]: Loop Invariant [2020-11-28 07:40:20,153 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,153 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,154 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,154 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,154 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,155 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,155 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,155 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,156 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,165 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,166 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:40:20,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:40:20,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:40:20,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:40:20,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((((((((((((("benchmark37_conjunctive.c" == 0 && unknown-#length-unknown["benchmark37_conjunctive.c"] == 26) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#StackHeapBarrier-unknown < "0") && y == x) && 0 <= x) && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark37_conjunctive.c") && #NULL == 0) && \valid["benchmark37_conjunctive.c"] == 1) && "0" == 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 26 SDslu, 20 SDs, 0 SdLazy, 59 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 75 HoareAnnotationTreeSize, 2 FomulaSimplifications, 79 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1781 SizeOfPredicates, 6 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/15 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]: 509, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 161, 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: 15, TOOLS_QUANTIFIERELIM_TIME[ms]: 146, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 137, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 27, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 263, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 23, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 26, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 25, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, 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]: 13, DAG_COMPRESSION_PROCESSED_NODES: 80, DAG_COMPRESSION_RETAINED_NODES: 29, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...