./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27bb8f686f653bdbe880104ff392667919def88e ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:29,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:29,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:29,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:29,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:29,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:29,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:29,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:29,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:29,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:29,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:29,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:29,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:29,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:29,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:29,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:29,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:29,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:29,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:29,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:29,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:29,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:29,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:29,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:29,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:29,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:29,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:29,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:29,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:29,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:29,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:29,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:29,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:29,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:29,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:29,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:29,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:29,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:29,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:29,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:29,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:29,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:29,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:29,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:29,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:29,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:29,759 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:29,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:29,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:29,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:29,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:29,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:29,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:29,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:29,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:29,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:29,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:29,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:29,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:29,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:29,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:29,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:29,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:29,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:29,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:29,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:29,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:29,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:29,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:29,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:29,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:29,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27bb8f686f653bdbe880104ff392667919def88e [2020-11-28 02:57:30,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:30,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:30,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:30,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:30,063 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:30,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-28 02:57:30,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/data/55b8f91cb/31ceeda3c71d45ff98d69d61013df069/FLAGbe11074d8 [2020-11-28 02:57:30,711 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:30,711 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-28 02:57:30,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/data/55b8f91cb/31ceeda3c71d45ff98d69d61013df069/FLAGbe11074d8 [2020-11-28 02:57:31,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/data/55b8f91cb/31ceeda3c71d45ff98d69d61013df069 [2020-11-28 02:57:31,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:31,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:31,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:31,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:31,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8410c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:31,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:31,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,379 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:31,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:31,414 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:31,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31 WrapperNode [2020-11-28 02:57:31,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:31,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:31,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:31,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:31,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:31,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:31,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:31,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:31,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:31,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:31,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:31,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:31,942 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:31,943 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:57:31,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:31 BoogieIcfgContainer [2020-11-28 02:57:31,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:31,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:31,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:31,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:31,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:31" (1/3) ... [2020-11-28 02:57:31,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f26ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31" (2/3) ... [2020-11-28 02:57:31,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f26ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:31" (3/3) ... [2020-11-28 02:57:31,957 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-11-28 02:57:31,970 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:31,975 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:31,988 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:32,024 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:32,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:32,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:32,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:32,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:32,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:32,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:32,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 02:57:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:57:32,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:32,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:32,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:32,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2020-11-28 02:57:32,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:32,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21755473] [2020-11-28 02:57:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:32,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21755473] [2020-11-28 02:57:32,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:32,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:32,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064205939] [2020-11-28 02:57:32,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:32,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:32,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:32,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:32,341 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-11-28 02:57:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:32,376 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 02:57:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:32,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 02:57:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:32,389 INFO L225 Difference]: With dead ends: 22 [2020-11-28 02:57:32,389 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 02:57:32,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 02:57:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 02:57:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 02:57:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 02:57:32,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-28 02:57:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:32,446 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 02:57:32,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 02:57:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:57:32,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:32,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:32,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:32,464 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:32,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:32,475 INFO L82 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2020-11-28 02:57:32,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:32,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708977075] [2020-11-28 02:57:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:32,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708977075] [2020-11-28 02:57:32,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762395089] [2020-11-28 02:57:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:32,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:57:32,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:32,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:32,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:32,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:32,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:57:32,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444744472] [2020-11-28 02:57:32,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:32,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:32,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:32,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:32,792 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2020-11-28 02:57:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:32,877 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-28 02:57:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:32,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 02:57:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:32,879 INFO L225 Difference]: With dead ends: 13 [2020-11-28 02:57:32,879 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:57:32,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:57:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:57:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:57:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 02:57:32,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-28 02:57:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:32,885 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 02:57:32,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 02:57:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:32,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:32,887 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:33,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:57:33,088 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1270519115, now seen corresponding path program 2 times [2020-11-28 02:57:33,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:33,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895487708] [2020-11-28 02:57:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:33,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895487708] [2020-11-28 02:57:33,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674716103] [2020-11-28 02:57:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/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 [2020-11-28 02:57:33,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:33,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:33,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:57:33,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:33,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:33,300 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:33,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:33,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:57:33,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656083201] [2020-11-28 02:57:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:33,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:33,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:33,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:33,325 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2020-11-28 02:57:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:33,390 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 02:57:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:33,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 02:57:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:33,399 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:57:33,399 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 02:57:33,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 02:57:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 02:57:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 02:57:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 02:57:33,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-28 02:57:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:33,403 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 02:57:33,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 02:57:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:57:33,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:33,403 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:33,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:33,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 731324427, now seen corresponding path program 3 times [2020-11-28 02:57:33,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:33,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336703903] [2020-11-28 02:57:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:57:33,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336703903] [2020-11-28 02:57:33,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:33,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:33,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266873142] [2020-11-28 02:57:33,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:33,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:33,676 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-11-28 02:57:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:33,706 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-28 02:57:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:33,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:57:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:33,707 INFO L225 Difference]: With dead ends: 11 [2020-11-28 02:57:33,707 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:33,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:33,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 02:57:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:33,708 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:33,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:33,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:33,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:33,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:57:33,743 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:57:33,743 INFO L274 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L277 CegarLoopResult]: At program point L54(lines 13 60) the Hoare annotation is: true [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:57:33,744 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:57:33,745 INFO L270 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0)) [2020-11-28 02:57:33,745 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 02:57:33,745 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 02:57:33,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:33 BoogieIcfgContainer [2020-11-28 02:57:33,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:33,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:33,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:33,763 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:33,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:31" (3/4) ... [2020-11-28 02:57:33,767 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:33,777 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:57:33,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:33,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:33,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:33,835 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dfb250ee-458d-49a5-9b6b-c4e855fd0640/bin/uautomizer/witness.graphml [2020-11-28 02:57:33,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:33,839 INFO L168 Benchmark]: Toolchain (without parser) took 2723.81 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.8 MB in the beginning and 81.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:33,844 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:33,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.58 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 73.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:33,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.04 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:33,848 INFO L168 Benchmark]: Boogie Preprocessor took 16.26 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 770.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:33,849 INFO L168 Benchmark]: RCFGBuilder took 481.09 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 59.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:33,852 INFO L168 Benchmark]: TraceAbstraction took 1814.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 84.5 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:33,852 INFO L168 Benchmark]: Witness Printer took 72.99 ms. Allocated memory is still 117.4 MB. Free memory was 84.5 MB in the beginning and 81.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:33,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.58 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 73.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.04 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.26 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 770.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 481.09 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 59.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1814.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 84.5 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.99 ms. Allocated memory is still 117.4 MB. Free memory was 84.5 MB in the beginning and 81.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || main__x + 2 <= main__y - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 7 SDslu, 34 SDs, 0 SdLazy, 52 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1129 SizeOfPredicates, 8 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/14 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...