./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gcnr2008.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_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gcnr2008.i -s /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/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 624f87877a6d808616ad34e2342211dcace52e27 ............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:55:17,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:55:17,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:55:17,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:55:17,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:55:17,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:55:17,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:55:17,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:55:17,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:55:17,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:55:17,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:55:17,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:55:17,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:55:17,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:55:17,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:55:17,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:55:17,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:55:17,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:55:17,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:55:17,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:55:17,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:55:17,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:55:17,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:55:17,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:55:17,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:55:17,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:55:17,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:55:17,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:55:17,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:55:17,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:55:17,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:55:17,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:55:17,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:55:17,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:55:17,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:55:17,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:55:17,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:55:17,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:55:17,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:55:17,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:55:17,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:55:17,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:55:17,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:55:17,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:55:17,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:55:17,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:55:17,905 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:55:17,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:55:17,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:55:17,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:55:17,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:55:17,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:55:17,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:55:17,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:55:17,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:55:17,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:55:17,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:55:17,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:55:17,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:55:17,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:55:17,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:55:17,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:55:17,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:55:17,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:55:17,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:55:17,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:55:17,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:55:17,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:55:17,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:55:17,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:55:17,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:55:17,911 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_39c2b84c-41c2-4cae-a8c6-59361f61098a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624f87877a6d808616ad34e2342211dcace52e27 [2020-11-30 00:55:18,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:55:18,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:55:18,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:55:18,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:55:18,216 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:55:18,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gcnr2008.i [2020-11-30 00:55:18,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/data/283a10905/bb84a8a8c83a43f090b7961c0073632c/FLAG2f3314d40 [2020-11-30 00:55:18,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:55:18,988 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/sv-benchmarks/c/loop-lit/gcnr2008.i [2020-11-30 00:55:19,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/data/283a10905/bb84a8a8c83a43f090b7961c0073632c/FLAG2f3314d40 [2020-11-30 00:55:19,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/data/283a10905/bb84a8a8c83a43f090b7961c0073632c [2020-11-30 00:55:19,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:55:19,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:55:19,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:55:19,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:55:19,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:55:19,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ef9f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19, skipping insertion in model container [2020-11-30 00:55:19,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:55:19,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:55:19,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:55:19,639 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:55:19,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:55:19,690 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:55:19,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19 WrapperNode [2020-11-30 00:55:19,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:55:19,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:55:19,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:55:19,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:55:19,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:55:19,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:55:19,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:55:19,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:55:19,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... [2020-11-30 00:55:19,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:55:19,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:55:19,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:55:19,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:55:19,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/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 [2020-11-30 00:55:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:55:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:55:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:55:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:55:20,305 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:55:20,305 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:55:20,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:55:20 BoogieIcfgContainer [2020-11-30 00:55:20,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:55:20,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:55:20,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:55:20,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:55:20,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:55:19" (1/3) ... [2020-11-30 00:55:20,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41791c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:55:20, skipping insertion in model container [2020-11-30 00:55:20,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:55:19" (2/3) ... [2020-11-30 00:55:20,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41791c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:55:20, skipping insertion in model container [2020-11-30 00:55:20,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:55:20" (3/3) ... [2020-11-30 00:55:20,317 INFO L111 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2020-11-30 00:55:20,329 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:55:20,334 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:55:20,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:55:20,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:55:20,391 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:55:20,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:55:20,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:55:20,391 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:55:20,391 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:55:20,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:55:20,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:55:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 00:55:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:55:20,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:55:20,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:55:20,417 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:55:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:55:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1064143880, now seen corresponding path program 1 times [2020-11-30 00:55:20,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:55:20,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482521247] [2020-11-30 00:55:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:55:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:55:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:55:20,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482521247] [2020-11-30 00:55:20,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:55:20,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:55:20,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480867071] [2020-11-30 00:55:20,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:55:20,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:55:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:55:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:55:20,636 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-30 00:55:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:55:20,654 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-11-30 00:55:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:55:20,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 00:55:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:55:20,677 INFO L225 Difference]: With dead ends: 30 [2020-11-30 00:55:20,678 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:55:20,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:55:20,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:55:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:55:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:55:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-30 00:55:20,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2020-11-30 00:55:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:55:20,722 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-30 00:55:20,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:55:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-11-30 00:55:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:55:20,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:55:20,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:55:20,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:55:20,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:55:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:55:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1235302244, now seen corresponding path program 1 times [2020-11-30 00:55:20,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:55:20,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081322150] [2020-11-30 00:55:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:55:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:55:20,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:55:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:55:20,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:55:20,856 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:55:20,856 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:55:20,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:55:20,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:55:20 BoogieIcfgContainer [2020-11-30 00:55:20,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:55:20,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:55:20,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:55:20,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:55:20,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:55:20" (3/4) ... [2020-11-30 00:55:20,893 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:55:20,947 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_39c2b84c-41c2-4cae-a8c6-59361f61098a/bin/uautomizer/witness.graphml [2020-11-30 00:55:20,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:55:20,950 INFO L168 Benchmark]: Toolchain (without parser) took 1575.54 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 37.6 MB in the end (delta: 27.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,955 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:55:20,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.33 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 74.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.59 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 72.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,958 INFO L168 Benchmark]: Boogie Preprocessor took 49.86 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:55:20,958 INFO L168 Benchmark]: RCFGBuilder took 517.87 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,960 INFO L168 Benchmark]: TraceAbstraction took 581.11 ms. Allocated memory is still 96.5 MB. Free memory was 59.1 MB in the beginning and 39.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,963 INFO L168 Benchmark]: Witness Printer took 57.60 ms. Allocated memory is still 96.5 MB. Free memory was 39.2 MB in the beginning and 37.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:55:20,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.33 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 74.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.59 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 72.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.86 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.87 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 581.11 ms. Allocated memory is still 96.5 MB. Free memory was 59.1 MB in the beginning and 39.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 57.60 ms. Allocated memory is still 96.5 MB. Free memory was 39.2 MB in the beginning and 37.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int x,y,z,w; [L26] EXPR w = 0 [L26] EXPR z = w = 0 [L26] EXPR y = z = w = 0 [L26] x = y = z = w = 0 [L27] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L18] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "assert.h", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...