./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.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_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ..................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:40:42,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:40:42,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:40:42,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:40:42,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:40:42,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:40:42,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:40:42,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:40:42,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:40:42,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:40:42,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:40:42,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:40:42,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:40:42,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:40:42,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:40:42,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:40:42,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:40:42,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:40:42,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:40:42,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:40:42,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:40:42,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:40:42,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:40:42,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:40:42,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:40:42,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:40:42,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:40:42,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:40:42,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:40:42,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:40:42,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:40:42,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:40:42,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:40:42,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:40:42,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:40:42,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:40:42,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:40:42,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:40:42,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:40:42,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:40:42,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:40:42,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:40:42,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:40:42,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:40:42,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:40:42,654 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:40:42,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:40:42,655 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:40:42,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:40:42,655 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:40:42,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:40:42,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:40:42,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:40:42,657 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:40:42,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:40:42,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:40:42,657 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:40:42,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:40:42,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:40:42,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:40:42,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:40:42,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:40:42,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:40:42,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:40:42,660 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:40:42,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:40:42,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:40:42,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:40:42,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:40:42,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:40:42,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:40:42,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:40:42,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:40:42,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:40:42,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:40:42,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:40:42,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:40:42,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:40:42,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:40:42,664 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_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2020-12-03 12:40:42,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:40:43,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:40:43,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:40:43,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:40:43,029 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:40:43,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-12-03 12:40:43,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/data/a142c0e3e/f7ef98da33dd4f4ebc891132470973e7/FLAG9fd1501fd [2020-12-03 12:40:43,583 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:40:43,583 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-12-03 12:40:43,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/data/a142c0e3e/f7ef98da33dd4f4ebc891132470973e7/FLAG9fd1501fd [2020-12-03 12:40:43,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/data/a142c0e3e/f7ef98da33dd4f4ebc891132470973e7 [2020-12-03 12:40:43,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:40:43,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:40:44,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:40:44,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:40:44,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:40:44,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:40:43" (1/1) ... [2020-12-03 12:40:44,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee60fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44, skipping insertion in model container [2020-12-03 12:40:44,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:40:43" (1/1) ... [2020-12-03 12:40:44,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:40:44,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:40:44,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:40:44,177 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:40:44,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:40:44,215 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:40:44,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44 WrapperNode [2020-12-03 12:40:44,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:40:44,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:40:44,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:40:44,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:40:44,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:40:44,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:40:44,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:40:44,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:40:44,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... [2020-12-03 12:40:44,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:40:44,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:40:44,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:40:44,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:40:44,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/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 12:40:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:40:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:40:44,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:40:44,564 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-03 12:40:44,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:44 BoogieIcfgContainer [2020-12-03 12:40:44,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:40:44,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:40:44,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:40:44,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:40:44,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:40:43" (1/3) ... [2020-12-03 12:40:44,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dda9fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:40:44, skipping insertion in model container [2020-12-03 12:40:44,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:44" (2/3) ... [2020-12-03 12:40:44,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dda9fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:40:44, skipping insertion in model container [2020-12-03 12:40:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:44" (3/3) ... [2020-12-03 12:40:44,575 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2020-12-03 12:40:44,591 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:40:44,594 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:40:44,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:40:44,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:40:44,630 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:40:44,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:40:44,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:40:44,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:40:44,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:40:44,631 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:40:44,631 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:40:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-03 12:40:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:40:44,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:44,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:40:44,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-12-03 12:40:44,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:44,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048408543] [2020-12-03 12:40:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:44,793 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 12:40:44,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048408543] [2020-12-03 12:40:44,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:44,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:40:44,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081000149] [2020-12-03 12:40:44,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:44,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:44,816 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-03 12:40:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:44,847 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-12-03 12:40:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:44,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:40:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:44,856 INFO L225 Difference]: With dead ends: 12 [2020-12-03 12:40:44,857 INFO L226 Difference]: Without dead ends: 10 [2020-12-03 12:40:44,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:40:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-03 12:40:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-03 12:40:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-03 12:40:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-03 12:40:44,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-12-03 12:40:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:44,890 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-03 12:40:44,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-03 12:40:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:40:44,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:44,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:40:44,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:40:44,892 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-12-03 12:40:44,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:44,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398015842] [2020-12-03 12:40:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:44,945 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 12:40:44,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398015842] [2020-12-03 12:40:44,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:44,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:40:44,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399615014] [2020-12-03 12:40:44,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:44,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:44,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:44,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:44,949 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-12-03 12:40:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:44,975 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-12-03 12:40:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:44,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:40:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:44,976 INFO L225 Difference]: With dead ends: 10 [2020-12-03 12:40:44,976 INFO L226 Difference]: Without dead ends: 9 [2020-12-03 12:40:44,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:40:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-03 12:40:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-03 12:40:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-03 12:40:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-03 12:40:44,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2020-12-03 12:40:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:44,980 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-03 12:40:44,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-03 12:40:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:40:44,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:44,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:40:44,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:40:44,982 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:44,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:44,983 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-12-03 12:40:44,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:44,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308062805] [2020-12-03 12:40:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:45,029 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 12:40:45,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308062805] [2020-12-03 12:40:45,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:45,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:40:45,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188865940] [2020-12-03 12:40:45,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:45,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:45,048 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-03 12:40:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:45,060 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-12-03 12:40:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:45,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-03 12:40:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:45,071 INFO L225 Difference]: With dead ends: 9 [2020-12-03 12:40:45,071 INFO L226 Difference]: Without dead ends: 8 [2020-12-03 12:40:45,077 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 12:40:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-03 12:40:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-03 12:40:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-03 12:40:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-12-03 12:40:45,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2020-12-03 12:40:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:45,086 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-12-03 12:40:45,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-12-03 12:40:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:40:45,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:45,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:40:45,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:40:45,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-12-03 12:40:45,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:45,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752614894] [2020-12-03 12:40:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:45,157 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 12:40:45,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752614894] [2020-12-03 12:40:45,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:45,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:40:45,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795824739] [2020-12-03 12:40:45,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:45,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:45,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:45,161 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2020-12-03 12:40:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:45,173 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-12-03 12:40:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:45,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-03 12:40:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:45,175 INFO L225 Difference]: With dead ends: 9 [2020-12-03 12:40:45,175 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:40:45,176 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 12:40:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:40:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:40:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:40:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:40:45,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-12-03 12:40:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:45,181 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:40:45,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:40:45,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:40:45,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:40:45,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-03 12:40:45,222 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-12-03 12:40:45,223 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:40:45,223 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:40:45,223 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-03 12:40:45,223 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-03 12:40:45,223 INFO L262 CegarLoopResult]: For program point L18(lines 18 23) no Hoare annotation was computed. [2020-12-03 12:40:45,224 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-12-03 12:40:45,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:40:45 BoogieIcfgContainer [2020-12-03 12:40:45,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:40:45,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:40:45,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:40:45,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:40:45,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:44" (3/4) ... [2020-12-03 12:40:45,243 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:40:45,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-03 12:40:45,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-03 12:40:45,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:40:45,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e6dccc70-a6ae-4b4d-8ef6-bf7ffa6f7709/bin/utaipan/witness.graphml [2020-12-03 12:40:45,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:40:45,293 INFO L168 Benchmark]: Toolchain (without parser) took 1297.18 ms. Allocated memory is still 100.7 MB. Free memory was 66.5 MB in the beginning and 72.6 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:45,293 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 100.7 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:45,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.40 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 79.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:45,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.78 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 77.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:45,295 INFO L168 Benchmark]: Boogie Preprocessor took 35.36 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 77.0 MB in the end (delta: 912.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:45,296 INFO L168 Benchmark]: RCFGBuilder took 264.06 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 66.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:45,296 INFO L168 Benchmark]: TraceAbstraction took 669.88 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 74.7 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:45,297 INFO L168 Benchmark]: Witness Printer took 52.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 72.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:45,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 100.7 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.40 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 79.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.78 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 77.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.36 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 77.0 MB in the end (delta: 912.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.06 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 66.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 669.88 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 74.7 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 72.6 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 19 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...