./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09133a28680a03e7996d348864dceb2b566b0f3d ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:05:37,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:05:37,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:05:37,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:05:37,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:05:37,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:05:37,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:05:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:05:37,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:05:37,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:05:37,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:05:37,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:05:37,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:05:37,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:05:37,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:05:37,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:05:37,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:05:37,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:05:37,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:05:37,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:05:37,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:05:37,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:05:37,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:05:37,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:05:37,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:05:37,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:05:37,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:05:37,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:05:37,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:05:37,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:05:37,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:05:37,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:05:37,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:05:37,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:05:37,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:05:37,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:05:37,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:05:37,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:05:37,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:05:37,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:05:37,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:05:37,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:05:37,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:05:37,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:05:37,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:05:37,512 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:05:37,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:05:37,512 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:05:37,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:05:37,512 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:05:37,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:05:37,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:05:37,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:05:37,513 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:05:37,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:05:37,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:05:37,514 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:05:37,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:05:37,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:05:37,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:05:37,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:05:37,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:05:37,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:05:37,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:05:37,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:05:37,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:05:37,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:05:37,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:05:37,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:05:37,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:05:37,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:05:37,518 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:05:37,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:05:37,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:05:37,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:05:37,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:05:37,518 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_ad1eb064-719f-4258-9f56-615b6c09ad0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09133a28680a03e7996d348864dceb2b566b0f3d [2020-12-09 06:05:37,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:05:37,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:05:37,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:05:37,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:05:37,713 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:05:37,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-12-09 06:05:37,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/data/8ec07f7b8/da360c83a79149a296b4fc29001a2413/FLAG342bc342c [2020-12-09 06:05:38,097 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:05:38,097 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-12-09 06:05:38,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/data/8ec07f7b8/da360c83a79149a296b4fc29001a2413/FLAG342bc342c [2020-12-09 06:05:38,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/data/8ec07f7b8/da360c83a79149a296b4fc29001a2413 [2020-12-09 06:05:38,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:05:38,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:05:38,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:05:38,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:05:38,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:05:38,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db94042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38, skipping insertion in model container [2020-12-09 06:05:38,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:05:38,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:05:38,664 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2020-12-09 06:05:38,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:05:38,675 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:05:38,687 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2020-12-09 06:05:38,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:05:38,698 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:05:38,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38 WrapperNode [2020-12-09 06:05:38,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:05:38,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:05:38,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:05:38,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:05:38,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:05:38,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:05:38,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:05:38,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:05:38,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... [2020-12-09 06:05:38,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:05:38,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:05:38,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:05:38,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:05:38,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:05:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:05:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:05:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:05:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:05:38,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:05:38,937 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 06:05:38,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:38 BoogieIcfgContainer [2020-12-09 06:05:38,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:05:38,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:05:38,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:05:38,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:05:38,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:05:38" (1/3) ... [2020-12-09 06:05:38,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc4c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:05:38, skipping insertion in model container [2020-12-09 06:05:38,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:38" (2/3) ... [2020-12-09 06:05:38,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc4c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:05:38, skipping insertion in model container [2020-12-09 06:05:38,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:38" (3/3) ... [2020-12-09 06:05:38,944 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-12-09 06:05:38,954 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:05:38,956 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:05:38,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:05:38,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:05:38,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:05:38,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:05:38,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:05:38,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:05:38,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:05:38,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:05:38,981 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:05:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 06:05:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:05:38,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:38,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:05:38,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2020-12-09 06:05:39,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:39,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831426730] [2020-12-09 06:05:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:39,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831426730] [2020-12-09 06:05:39,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:39,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:05:39,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369287428] [2020-12-09 06:05:39,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:39,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:39,129 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-09 06:05:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:39,144 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-12-09 06:05:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:39,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 06:05:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:39,151 INFO L225 Difference]: With dead ends: 17 [2020-12-09 06:05:39,151 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 06:05:39,153 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 [2020-12-09 06:05:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 06:05:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 06:05:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 06:05:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 06:05:39,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 06:05:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:39,174 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 06:05:39,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 06:05:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:05:39,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:39,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:39,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:05:39,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:39,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2020-12-09 06:05:39,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:39,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637161637] [2020-12-09 06:05:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:39,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637161637] [2020-12-09 06:05:39,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045282699] [2020-12-09 06:05:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:39,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:05:39,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:05:39,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:05:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:39,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:05:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:39,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026826116] [2020-12-09 06:05:39,392 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:05:39,393 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:05:39,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:05:39,401 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:05:39,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:05:39,692 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:05:40,117 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:05:40,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:05:40,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2020-12-09 06:05:40,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664483181] [2020-12-09 06:05:40,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:05:40,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:40,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:05:40,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-09 06:05:40,120 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-12-09 06:05:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:40,156 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-12-09 06:05:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:05:40,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-12-09 06:05:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:40,157 INFO L225 Difference]: With dead ends: 10 [2020-12-09 06:05:40,157 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:05:40,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-09 06:05:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:05:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:05:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:05:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:05:40,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-09 06:05:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:40,159 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:05:40,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:05:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:05:40,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:05:40,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 06:05:40,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:05:40,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:05:40,421 INFO L262 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-12-09 06:05:40,422 INFO L265 CegarLoopResult]: At program point L54(lines 13 60) the Hoare annotation is: true [2020-12-09 06:05:40,423 INFO L262 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-12-09 06:05:40,423 INFO L262 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-12-09 06:05:40,424 INFO L262 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-12-09 06:05:40,424 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:05:40,425 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-12-09 06:05:40,426 INFO L258 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (or (< ULTIMATE.start_main_~main__x~0 0) (< 0 ULTIMATE.start_main_~main__y~0)) [2020-12-09 06:05:40,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:05:40 BoogieIcfgContainer [2020-12-09 06:05:40,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:05:40,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:05:40,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:05:40,451 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:05:40,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:38" (3/4) ... [2020-12-09 06:05:40,454 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:05:40,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 06:05:40,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 06:05:40,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:05:40,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:05:40,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ad1eb064-719f-4258-9f56-615b6c09ad0f/bin/utaipan/witness.graphml [2020-12-09 06:05:40,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:05:40,493 INFO L168 Benchmark]: Toolchain (without parser) took 1960.34 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 44.2 MB in the beginning and 42.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,494 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:05:40,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.33 ms. Allocated memory is still 83.9 MB. Free memory was 44.0 MB in the beginning and 56.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,495 INFO L168 Benchmark]: Boogie Preprocessor took 13.73 ms. Allocated memory is still 83.9 MB. Free memory was 55.0 MB in the beginning and 54.1 MB in the end (delta: 948.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:05:40,496 INFO L168 Benchmark]: RCFGBuilder took 203.12 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 56.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,496 INFO L168 Benchmark]: TraceAbstraction took 1510.73 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 56.2 MB in the beginning and 44.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,497 INFO L168 Benchmark]: Witness Printer took 41.26 ms. Allocated memory is still 100.7 MB. Free memory was 44.8 MB in the beginning and 42.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:05:40,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.33 ms. Allocated memory is still 83.9 MB. Free memory was 44.0 MB in the beginning and 56.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.73 ms. Allocated memory is still 83.9 MB. Free memory was 55.0 MB in the beginning and 54.1 MB in the end (delta: 948.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 203.12 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 56.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1510.73 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 56.2 MB in the beginning and 44.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * Witness Printer took 41.26 ms. Allocated memory is still 100.7 MB. Free memory was 44.8 MB in the beginning and 42.7 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: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 505 SizeOfPredicates, 4 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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...