./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_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/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_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/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 [2020-12-03 12:37:49,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:37:49,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:37:49,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:37:49,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:37:49,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:37:49,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:37:49,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:37:49,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:37:49,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:37:49,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:37:49,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:37:49,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:37:49,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:37:49,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:37:49,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:37:49,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:37:49,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:37:49,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:37:49,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:37:49,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:37:49,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:37:49,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:37:49,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:37:49,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:37:49,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:37:49,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:37:49,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:37:49,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:37:49,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:37:49,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:37:49,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:37:49,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:37:49,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:37:49,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:37:49,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:37:49,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:37:49,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:37:49,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:37:49,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:37:49,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:37:49,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:37:49,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:37:49,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:37:49,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:37:49,483 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:37:49,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:37:49,483 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:37:49,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:37:49,484 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:37:49,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:37:49,484 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:37:49,484 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:37:49,485 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:37:49,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:37:49,485 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:37:49,485 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:37:49,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:37:49,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:37:49,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:37:49,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:37:49,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:37:49,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:37:49,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:37:49,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:37:49,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:37:49,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:37:49,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:37:49,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:37:49,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:37:49,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:37:49,491 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_af9b7496-f136-4de1-a6ad-2a0506c63a5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09133a28680a03e7996d348864dceb2b566b0f3d [2020-12-03 12:37:49,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:37:49,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:37:49,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:37:49,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:37:49,778 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:37:49,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-12-03 12:37:49,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/data/83eaf7236/a8164aa331a64624aef0df3d6e0d6b41/FLAG85dfb244a [2020-12-03 12:37:50,376 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:37:50,377 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-12-03 12:37:50,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/data/83eaf7236/a8164aa331a64624aef0df3d6e0d6b41/FLAG85dfb244a [2020-12-03 12:37:50,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/data/83eaf7236/a8164aa331a64624aef0df3d6e0d6b41 [2020-12-03 12:37:50,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:37:50,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:37:50,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:50,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:37:50,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:37:50,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:50" (1/1) ... [2020-12-03 12:37:50,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bb0630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:50, skipping insertion in model container [2020-12-03 12:37:50,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:50" (1/1) ... [2020-12-03 12:37:50,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:37:50,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:37:50,980 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_af9b7496-f136-4de1-a6ad-2a0506c63a5a/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2020-12-03 12:37:50,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:51,002 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:37:51,031 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_af9b7496-f136-4de1-a6ad-2a0506c63a5a/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2020-12-03 12:37:51,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:51,052 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:37:51,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51 WrapperNode [2020-12-03 12:37:51,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:51,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:51,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:37:51,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:37:51,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:51,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:37:51,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:37:51,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:37:51,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... [2020-12-03 12:37:51,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:37:51,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:37:51,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:37:51,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:37:51,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/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 12:37:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:37:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:37:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:37:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:37:51,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:37:51,473 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:37:51,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:51 BoogieIcfgContainer [2020-12-03 12:37:51,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:37:51,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:37:51,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:37:51,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:37:51,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:37:50" (1/3) ... [2020-12-03 12:37:51,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee16613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:51, skipping insertion in model container [2020-12-03 12:37:51,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:51" (2/3) ... [2020-12-03 12:37:51,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee16613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:51, skipping insertion in model container [2020-12-03 12:37:51,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:51" (3/3) ... [2020-12-03 12:37:51,484 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-12-03 12:37:51,499 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:37:51,502 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:37:51,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:37:51,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:37:51,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:37:51,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:37:51,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:37:51,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:37:51,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:37:51,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:37:51,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:37:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-03 12:37:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:37:51,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:51,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:37:51,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:51,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2020-12-03 12:37:51,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:51,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447994835] [2020-12-03 12:37:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:51,815 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 12:37:51,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447994835] [2020-12-03 12:37:51,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:51,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:37:51,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135045065] [2020-12-03 12:37:51,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:37:51,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:37:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:37:51,846 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-03 12:37:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:51,883 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-12-03 12:37:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:37:51,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:37:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:51,906 INFO L225 Difference]: With dead ends: 17 [2020-12-03 12:37:51,909 INFO L226 Difference]: Without dead ends: 8 [2020-12-03 12:37:51,912 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 12:37:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-03 12:37:51,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-03 12:37:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-03 12:37:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-03 12:37:51,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-03 12:37:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:51,951 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-03 12:37:51,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:37:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-03 12:37:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:37:51,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:51,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:51,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:37:51,955 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2020-12-03 12:37:51,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:51,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458113894] [2020-12-03 12:37:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:52,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458113894] [2020-12-03 12:37:52,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413345920] [2020-12-03 12:37:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:37:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:52,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:37:52,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:37:52,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:37:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:37:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:52,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1409467838] [2020-12-03 12:37:52,427 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-03 12:37:52,428 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:37:52,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:37:52,446 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:37:52,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:37:53,017 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:37:53,227 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-12-03 12:37:53,425 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:37:53,620 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-03 12:37:53,863 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-12-03 12:37:53,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:37:53,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:37:53,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2020-12-03 12:37:53,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867158226] [2020-12-03 12:37:53,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 12:37:53,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 12:37:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-03 12:37:53,879 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-12-03 12:37:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:53,940 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-12-03 12:37:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:37:53,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-12-03 12:37:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:53,944 INFO L225 Difference]: With dead ends: 10 [2020-12-03 12:37:53,944 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:37:53,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-03 12:37:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:37:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:37:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:37:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:37:53,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-03 12:37:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:53,952 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:37:53,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 12:37:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:37:53,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:37:54,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 12:37:54,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:37:54,195 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:37:54,195 INFO L262 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-12-03 12:37:54,196 INFO L265 CegarLoopResult]: At program point L54(lines 13 60) the Hoare annotation is: true [2020-12-03 12:37:54,196 INFO L262 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-12-03 12:37:54,196 INFO L262 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-12-03 12:37:54,196 INFO L262 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-12-03 12:37:54,196 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:37:54,196 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-12-03 12:37:54,197 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)) [2020-12-03 12:37:54,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:37:54 BoogieIcfgContainer [2020-12-03 12:37:54,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:37:54,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:37:54,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:37:54,211 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:37:54,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:51" (3/4) ... [2020-12-03 12:37:54,214 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:37:54,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-03 12:37:54,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:37:54,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:37:54,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:37:54,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af9b7496-f136-4de1-a6ad-2a0506c63a5a/bin/utaipan/witness.graphml [2020-12-03 12:37:54,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:37:54,262 INFO L168 Benchmark]: Toolchain (without parser) took 3502.56 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 61.3 MB in the beginning and 39.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,263 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:54,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.46 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 97.1 MB in the end (delta: -36.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 95.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,264 INFO L168 Benchmark]: Boogie Preprocessor took 44.78 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 95.1 MB in the end (delta: 714.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:54,265 INFO L168 Benchmark]: RCFGBuilder took 335.83 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 81.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,266 INFO L168 Benchmark]: TraceAbstraction took 2733.54 ms. Allocated memory is still 119.5 MB. Free memory was 81.1 MB in the beginning and 41.1 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,274 INFO L168 Benchmark]: Witness Printer took 50.05 ms. Allocated memory is still 119.5 MB. Free memory was 41.1 MB in the beginning and 39.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:54,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.46 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 97.1 MB in the end (delta: -36.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 95.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.78 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 95.1 MB in the end (delta: 714.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 335.83 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 81.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2733.54 ms. Allocated memory is still 119.5 MB. Free memory was 81.1 MB in the beginning and 41.1 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * Witness Printer took 50.05 ms. Allocated memory is still 119.5 MB. Free memory was 41.1 MB in the beginning and 39.0 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: 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, 13 SyntacticMatches, 0 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, 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...