./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_variant.i --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_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/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 d9ecf0997a3226968b15d351ec48dae1cc4b70e9 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:53:58,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:53:58,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:53:58,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:53:58,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:53:58,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:53:58,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:53:58,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:53:58,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:53:58,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:53:58,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:53:58,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:53:58,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:53:58,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:53:58,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:53:58,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:53:58,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:53:58,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:53:58,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:53:58,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:53:58,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:53:58,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:53:58,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:53:58,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:53:58,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:53:58,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:53:58,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:53:59,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:53:59,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:53:59,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:53:59,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:53:59,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:53:59,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:53:59,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:53:59,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:53:59,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:53:59,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:53:59,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:53:59,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:53:59,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:53:59,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:53:59,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:53:59,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:53:59,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:53:59,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:53:59,077 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:53:59,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:53:59,078 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:53:59,078 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:53:59,079 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:53:59,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:53:59,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:53:59,081 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:53:59,081 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:53:59,081 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:53:59,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:53:59,082 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:53:59,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:53:59,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:53:59,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:53:59,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:53:59,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:53:59,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:53:59,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:53:59,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:53:59,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:53:59,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:53:59,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:53:59,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:53:59,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:53:59,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:53:59,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:53:59,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:53:59,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:53:59,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:53:59,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:53:59,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:53:59,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:53:59,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:53:59,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:53:59,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:53:59,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:53:59,093 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_dfd25efe-a913-4584-8602-8bf0cd0422cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9ecf0997a3226968b15d351ec48dae1cc4b70e9 [2020-11-22 12:53:59,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:53:59,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:53:59,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:53:59,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:53:59,488 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:53:59,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/../../sv-benchmarks/c/loop-lit/jm2006_variant.i [2020-11-22 12:53:59,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/data/82b7d7738/befc1e5d37104d73bfa96228e5fe8622/FLAGc1abff216 [2020-11-22 12:54:00,053 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:54:00,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/sv-benchmarks/c/loop-lit/jm2006_variant.i [2020-11-22 12:54:00,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/data/82b7d7738/befc1e5d37104d73bfa96228e5fe8622/FLAGc1abff216 [2020-11-22 12:54:00,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/data/82b7d7738/befc1e5d37104d73bfa96228e5fe8622 [2020-11-22 12:54:00,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:54:00,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:54:00,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:00,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:54:00,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:54:00,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7727c90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00, skipping insertion in model container [2020-11-22 12:54:00,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:54:00,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:54:00,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:00,751 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:54:00,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:00,803 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:54:00,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00 WrapperNode [2020-11-22 12:54:00,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:00,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:00,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:54:00,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:54:00,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:00,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:54:00,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:54:00,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:54:00,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... [2020-11-22 12:54:00,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:54:00,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:54:00,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:54:00,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:54:00,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/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 [2020-11-22 12:54:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:54:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:54:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:54:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:54:01,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:54:01,260 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:54:01,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:01 BoogieIcfgContainer [2020-11-22 12:54:01,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:54:01,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:54:01,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:54:01,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:54:01,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:54:00" (1/3) ... [2020-11-22 12:54:01,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b697da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:01, skipping insertion in model container [2020-11-22 12:54:01,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:00" (2/3) ... [2020-11-22 12:54:01,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b697da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:01, skipping insertion in model container [2020-11-22 12:54:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:01" (3/3) ... [2020-11-22 12:54:01,287 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-11-22 12:54:01,298 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:54:01,303 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:54:01,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:54:01,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:54:01,345 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:54:01,345 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:54:01,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:54:01,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:54:01,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:54:01,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:54:01,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:54:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 12:54:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:54:01,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:01,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:01,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:01,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1614104325, now seen corresponding path program 1 times [2020-11-22 12:54:01,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961386270] [2020-11-22 12:54:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:01,810 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2020-11-22 12:54:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:01,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961386270] [2020-11-22 12:54:01,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:01,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:54:01,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226952852] [2020-11-22 12:54:01,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:54:01,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:01,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:54:01,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:54:01,936 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2020-11-22 12:54:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:02,199 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-11-22 12:54:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:54:02,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 12:54:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:02,230 INFO L225 Difference]: With dead ends: 31 [2020-11-22 12:54:02,231 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:54:02,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:54:02,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:54:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:54:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:54:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-22 12:54:02,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-22 12:54:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:02,280 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-22 12:54:02,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:54:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-22 12:54:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:54:02,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:02,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:02,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:54:02,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:02,283 INFO L82 PathProgramCache]: Analyzing trace with hash 526347288, now seen corresponding path program 1 times [2020-11-22 12:54:02,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:02,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087198313] [2020-11-22 12:54:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:02,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087198313] [2020-11-22 12:54:02,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589384566] [2020-11-22 12:54:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/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 [2020-11-22 12:54:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:02,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-22 12:54:02,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:02,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:02,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:54:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:02,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [898077048] [2020-11-22 12:54:02,908 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-22 12:54:02,909 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:54:02,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:54:02,920 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:54:02,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:54:03,569 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:54:03,735 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-11-22 12:54:03,902 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 12:54:04,083 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-11-22 12:54:04,241 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-11-22 12:54:04,440 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-11-22 12:54:04,642 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-11-22 12:54:04,644 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:54:04,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:54:04,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2020-11-22 12:54:04,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691537075] [2020-11-22 12:54:04,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:54:04,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:54:04,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-11-22 12:54:04,654 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 13 states. [2020-11-22 12:54:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:05,074 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-22 12:54:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 12:54:05,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2020-11-22 12:54:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:05,075 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:54:05,075 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:54:05,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-11-22 12:54:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:54:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 12:54:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 12:54:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-22 12:54:05,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2020-11-22 12:54:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:05,083 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-22 12:54:05,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:54:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-22 12:54:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:54:05,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:05,084 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:05,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 12:54:05,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash 955062331, now seen corresponding path program 2 times [2020-11-22 12:54:05,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:05,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818713257] [2020-11-22 12:54:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:54:05,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818713257] [2020-11-22 12:54:05,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869383191] [2020-11-22 12:54:05,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:54:05,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-22 12:54:05,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 12:54:05,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-22 12:54:05,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:05,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1990477440] [2020-11-22 12:54:06,106 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-22 12:54:06,106 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:54:06,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:54:06,107 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:54:06,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:54:06,373 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:54:06,553 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-11-22 12:54:06,733 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 12:54:06,931 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-11-22 12:54:07,085 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-11-22 12:54:07,250 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-11-22 12:54:07,433 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-11-22 12:54:07,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:54:07,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:54:07,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2020-11-22 12:54:07,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017347602] [2020-11-22 12:54:07,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-22 12:54:07,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-22 12:54:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-11-22 12:54:07,438 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 20 states. [2020-11-22 12:54:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:07,706 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-22 12:54:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 12:54:07,707 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 12 [2020-11-22 12:54:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:07,707 INFO L225 Difference]: With dead ends: 16 [2020-11-22 12:54:07,707 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:54:07,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2020-11-22 12:54:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:54:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:54:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:54:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:54:07,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-22 12:54:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:07,709 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:54:07,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-22 12:54:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:54:07,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:54:07,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-22 12:54:07,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:54:07,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:54:07,999 INFO L270 CegarLoopResult]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~j~0)) (.cse0 (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-22 12:54:07,999 INFO L274 CegarLoopResult]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2020-11-22 12:54:07,999 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-22 12:54:07,999 INFO L277 CegarLoopResult]: At program point L38(lines 38 40) the Hoare annotation is: true [2020-11-22 12:54:07,999 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:54:07,999 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 12:54:08,000 INFO L277 CegarLoopResult]: At program point L41(lines 24 42) the Hoare annotation is: true [2020-11-22 12:54:08,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:54:08 BoogieIcfgContainer [2020-11-22 12:54:08,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:54:08,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:54:08,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:54:08,025 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:54:08,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:01" (3/4) ... [2020-11-22 12:54:08,030 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:54:08,041 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 12:54:08,041 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 12:54:08,041 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:54:08,041 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:54:08,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dfd25efe-a913-4584-8602-8bf0cd0422cb/bin/utaipan/witness.graphml [2020-11-22 12:54:08,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:54:08,109 INFO L168 Benchmark]: Toolchain (without parser) took 7664.66 ms. Allocated memory was 92.3 MB in the beginning and 155.2 MB in the end (delta: 62.9 MB). Free memory was 57.7 MB in the beginning and 107.9 MB in the end (delta: -50.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,110 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:08,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.06 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 68.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.53 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,114 INFO L168 Benchmark]: Boogie Preprocessor took 27.21 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 66.3 MB in the end (delta: 773.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:08,115 INFO L168 Benchmark]: RCFGBuilder took 367.88 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 52.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,115 INFO L168 Benchmark]: TraceAbstraction took 6759.47 ms. Allocated memory was 92.3 MB in the beginning and 155.2 MB in the end (delta: 62.9 MB). Free memory was 52.2 MB in the beginning and 110.0 MB in the end (delta: -57.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,116 INFO L168 Benchmark]: Witness Printer took 82.75 ms. Allocated memory is still 155.2 MB. Free memory was 110.0 MB in the beginning and 107.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:08,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.06 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 68.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.53 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.21 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 66.3 MB in the end (delta: 773.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 367.88 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 52.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6759.47 ms. Allocated memory was 92.3 MB in the beginning and 155.2 MB in the end (delta: 62.9 MB). Free memory was 52.2 MB in the beginning and 110.0 MB in the end (delta: -57.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 82.75 ms. Allocated memory is still 155.2 MB. Free memory was 110.0 MB in the beginning and 107.9 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: 12]: 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: 33]: Loop Invariant Derived loop invariant: z + y + i <= x + j && x + j <= z + y + i - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 46 SDslu, 38 SDs, 0 SdLazy, 134 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 5177 SizeOfPredicates, 18 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 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...