./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/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 27bb8f686f653bdbe880104ff392667919def88e .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:51,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:52,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:52,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:52,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:52,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:52,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:52,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:52,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:52,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:52,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:52,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:52,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:52,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:52,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:52,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:52,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:52,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:52,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:52,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:52,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:52,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:52,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:52,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:52,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:52,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:52,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:52,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:52,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:52,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:52,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:52,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:52,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:52,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:52,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:52,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:52,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:52,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:52,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:52,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:52,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:52,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:52,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:52,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:52,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:52,202 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:52,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:52,202 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:52,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:52,203 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:52,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:52,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:52,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:52,204 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:52,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:52,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:52,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:52,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:52,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:52,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:52,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:52,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:52,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:52,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:52,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:52,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:52,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:52,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:52,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:52,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:52,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:52,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:52,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:52,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:52,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:52,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:52,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:52,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:52,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:52,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:52,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:52,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:52,211 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_daa413dd-77cf-4b13-858c-ece6ad7becb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27bb8f686f653bdbe880104ff392667919def88e [2020-11-28 07:40:52,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:52,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:52,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:52,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:52,508 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:52,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-28 07:40:52,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/data/0a7b350fa/00407d29e3604e8ab039a50a1f483919/FLAGb73c242f0 [2020-11-28 07:40:53,094 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:53,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-28 07:40:53,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/data/0a7b350fa/00407d29e3604e8ab039a50a1f483919/FLAGb73c242f0 [2020-11-28 07:40:53,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/data/0a7b350fa/00407d29e3604e8ab039a50a1f483919 [2020-11-28 07:40:53,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:53,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:53,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:53,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:53,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:53,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8bcdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53, skipping insertion in model container [2020-11-28 07:40:53,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:53,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:53,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:53,782 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:53,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:53,813 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:53,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53 WrapperNode [2020-11-28 07:40:53,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:53,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:53,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:53,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:53,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:53,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:53,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:53,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:53,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... [2020-11-28 07:40:53,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:53,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:53,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:53,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:53,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:54,300 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:54,301 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:40:54,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54 BoogieIcfgContainer [2020-11-28 07:40:54,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:54,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:54,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:54,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:54,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:53" (1/3) ... [2020-11-28 07:40:54,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554904f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:53" (2/3) ... [2020-11-28 07:40:54,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554904f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54" (3/3) ... [2020-11-28 07:40:54,312 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-11-28 07:40:54,323 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:54,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:54,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:54,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:54,366 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:54,367 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:54,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:54,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:54,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:54,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:54,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-28 07:40:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:54,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:54,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1781847472, now seen corresponding path program 1 times [2020-11-28 07:40:54,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210084225] [2020-11-28 07:40:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210084225] [2020-11-28 07:40:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:54,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:54,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380772420] [2020-11-28 07:40:54,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:54,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:54,619 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-28 07:40:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:54,654 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-11-28 07:40:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:54,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:40:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:54,667 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:40:54,667 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:40:54,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:40:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:40:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:40:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:40:54,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:40:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:54,715 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:40:54,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:40:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:54,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:54,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:54,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash -597365690, now seen corresponding path program 1 times [2020-11-28 07:40:54,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881266391] [2020-11-28 07:40:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:54,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881266391] [2020-11-28 07:40:54,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655753208] [2020-11-28 07:40:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:40:54,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:54,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:54,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:55,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:55,026 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:55,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980693375] [2020-11-28 07:40:55,118 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:40:55,118 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:55,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:55,129 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:55,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:55,888 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:56,076 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-28 07:40:56,279 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-28 07:40:56,462 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-28 07:40:56,709 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-11-28 07:40:56,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:56,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:56,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2020-11-28 07:40:56,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592953170] [2020-11-28 07:40:56,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:56,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:56,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:40:56,716 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-11-28 07:40:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,790 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-11-28 07:40:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:56,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-28 07:40:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,791 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:40:56,791 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:56,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:40:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:56,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 07:40:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,793 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:56,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:56,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:56,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:40:56,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:57,026 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:57,026 INFO L274 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-11-28 07:40:57,027 INFO L277 CegarLoopResult]: At program point L54(lines 13 60) the Hoare annotation is: true [2020-11-28 07:40:57,027 INFO L274 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-11-28 07:40:57,027 INFO L274 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-11-28 07:40:57,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:57,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:40:57,027 INFO L270 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)) [2020-11-28 07:40:57,028 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 07:40:57,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:57 BoogieIcfgContainer [2020-11-28 07:40:57,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:57,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:57,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:57,043 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:57,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:54" (3/4) ... [2020-11-28 07:40:57,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:57,057 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:40:57,057 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:40:57,057 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:57,057 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:57,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_daa413dd-77cf-4b13-858c-ece6ad7becb5/bin/utaipan/witness.graphml [2020-11-28 07:40:57,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:57,113 INFO L168 Benchmark]: Toolchain (without parser) took 3640.84 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 60.2 MB in the beginning and 44.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,114 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:57,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 66.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.63 ms. Allocated memory is still 90.2 MB. Free memory was 66.8 MB in the beginning and 65.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,116 INFO L168 Benchmark]: Boogie Preprocessor took 18.72 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.4 MB in the end (delta: 880.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:57,116 INFO L168 Benchmark]: RCFGBuilder took 436.70 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 51.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,117 INFO L168 Benchmark]: TraceAbstraction took 2737.87 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 51.3 MB in the beginning and 46.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,117 INFO L168 Benchmark]: Witness Printer took 69.45 ms. Allocated memory is still 119.5 MB. Free memory was 46.3 MB in the beginning and 44.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 66.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.63 ms. Allocated memory is still 90.2 MB. Free memory was 66.8 MB in the beginning and 65.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.72 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.4 MB in the end (delta: 880.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 436.70 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 51.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2737.87 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 51.3 MB in the beginning and 46.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.45 ms. Allocated memory is still 119.5 MB. Free memory was 46.3 MB in the beginning and 44.2 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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: 2.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s 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, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 499 SizeOfPredicates, 5 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 7 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...