./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_02-1.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_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/terminator_02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/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 3dc5764de0a899142e3c264091a9582d1804fe6f .......................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:11:15,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:15,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:15,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:15,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:15,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:15,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:15,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:15,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:15,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:15,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:15,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:15,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:15,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:15,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:15,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:15,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:15,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:15,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:15,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:15,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:15,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:15,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:15,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:15,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:15,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:15,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:15,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:15,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:15,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:15,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:15,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:15,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:15,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:15,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:15,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:15,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:15,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:15,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:15,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:16,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:16,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:11:16,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:16,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:16,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:16,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:16,063 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:16,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:16,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:16,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:16,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:16,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:16,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:16,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:16,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:16,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:16,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:16,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:16,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:16,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:16,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:16,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:16,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:16,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:16,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:16,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:16,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:16,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:16,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:16,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:16,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:16,071 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_5a420d37-3adf-4ca7-a5a0-207c59b93257/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dc5764de0a899142e3c264091a9582d1804fe6f [2020-11-28 03:11:16,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:16,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:16,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:16,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:16,482 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:16,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_02-1.c [2020-11-28 03:11:16,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/data/f23146b36/2bdb2c0a823f44cfb1ba10c72ad22caf/FLAGaddb31257 [2020-11-28 03:11:17,227 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:17,228 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/sv-benchmarks/c/loops/terminator_02-1.c [2020-11-28 03:11:17,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/data/f23146b36/2bdb2c0a823f44cfb1ba10c72ad22caf/FLAGaddb31257 [2020-11-28 03:11:17,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/data/f23146b36/2bdb2c0a823f44cfb1ba10c72ad22caf [2020-11-28 03:11:17,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:17,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:17,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:17,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:17,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:17,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669e3396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17, skipping insertion in model container [2020-11-28 03:11:17,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:17,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:17,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:17,959 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:17,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:17,994 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:17,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17 WrapperNode [2020-11-28 03:11:17,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:17,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:17,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:17,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:18,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:18,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:18,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:18,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:18,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:18,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:18,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:18,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:18,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:18,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/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 03:11:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:18,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:18,509 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:18,510 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:11:18,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18 BoogieIcfgContainer [2020-11-28 03:11:18,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:18,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:18,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:18,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:17" (1/3) ... [2020-11-28 03:11:18,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd18d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:18, skipping insertion in model container [2020-11-28 03:11:18,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (2/3) ... [2020-11-28 03:11:18,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd18d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:18, skipping insertion in model container [2020-11-28 03:11:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18" (3/3) ... [2020-11-28 03:11:18,543 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-11-28 03:11:18,557 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:18,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:11:18,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:11:18,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:18,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:18,623 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:18,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:18,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:18,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:18,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:18,624 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:11:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:18,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:18,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:18,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,654 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2020-11-28 03:11:18,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:18,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330101755] [2020-11-28 03:11:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:18,826 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 03:11:18,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330101755] [2020-11-28 03:11:18,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:18,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:11:18,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698708225] [2020-11-28 03:11:18,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:18,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:18,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:18,853 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:11:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:18,870 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-28 03:11:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:18,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 03:11:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:18,881 INFO L225 Difference]: With dead ends: 21 [2020-11-28 03:11:18,882 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 03:11:18,898 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 [2020-11-28 03:11:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 03:11:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 03:11:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:11:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-11-28 03:11:18,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2020-11-28 03:11:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:18,937 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-28 03:11:18,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-11-28 03:11:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:18,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:18,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:18,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:18,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2020-11-28 03:11:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128133718] [2020-11-28 03:11:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:19,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:19,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:19,082 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:19,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:19,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:19,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:19 BoogieIcfgContainer [2020-11-28 03:11:19,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:19,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:19,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:19,125 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:19,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18" (3/4) ... [2020-11-28 03:11:19,128 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:11:19,186 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a420d37-3adf-4ca7-a5a0-207c59b93257/bin/uautomizer/witness.graphml [2020-11-28 03:11:19,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:19,194 INFO L168 Benchmark]: Toolchain (without parser) took 1598.81 ms. Allocated memory is still 102.8 MB. Free memory was 68.9 MB in the beginning and 44.1 MB in the end (delta: 24.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,196 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 74.5 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.11 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 79.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,200 INFO L168 Benchmark]: Boogie Preprocessor took 24.41 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 77.6 MB in the end (delta: 578.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,201 INFO L168 Benchmark]: RCFGBuilder took 448.76 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 66.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,205 INFO L168 Benchmark]: TraceAbstraction took 603.60 ms. Allocated memory is still 102.8 MB. Free memory was 65.6 MB in the beginning and 46.2 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,206 INFO L168 Benchmark]: Witness Printer took 62.61 ms. Allocated memory is still 102.8 MB. Free memory was 46.2 MB in the beginning and 44.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 74.5 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.11 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 79.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.41 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 77.6 MB in the end (delta: 578.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 448.76 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 66.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 603.60 ms. Allocated memory is still 102.8 MB. Free memory was 65.6 MB in the beginning and 46.2 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.61 ms. Allocated memory is still 102.8 MB. Free memory was 46.2 MB in the beginning and 44.1 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: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100