./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_union_cast.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_union_cast.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 646331e29aa61bcc995ee44f8d67b96d9f132be8 ................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:37:48,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:37:48,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:37:48,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:37:48,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:37:48,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:37:48,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:37:48,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:37:48,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:37:48,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:37:48,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:37:48,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:37:48,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:37:48,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:37:48,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:37:48,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:37:48,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:37:48,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:37:48,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:37:48,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:37:48,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:37:48,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:37:48,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:37:48,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:37:48,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:37:48,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:37:48,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:37:48,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:37:48,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:37:48,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:37:48,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:37:48,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:37:48,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:37:48,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:37:48,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:37:48,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:37:48,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:37:48,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:37:48,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:37:48,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:37:48,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:37:48,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:37:48,941 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:37:48,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:37:48,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:37:48,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:37:48,954 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:37:48,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:37:48,954 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:37:48,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:37:48,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:37:48,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:37:48,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:37:48,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:37:48,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:37:48,956 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:37:48,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:37:48,957 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:37:48,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:37:48,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:37:48,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:37:48,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:37:48,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:37:48,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:37:48,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:37:48,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:37:48,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:37:48,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:37:48,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:37:48,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:37:48,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d279998d-96cd-4465-9270-d81179ddb81c/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(__VERIFIER_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 -> 646331e29aa61bcc995ee44f8d67b96d9f132be8 [2019-11-15 21:37:48,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:37:49,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:37:49,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:37:49,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:37:49,013 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:37:49,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_union_cast.i [2019-11-15 21:37:49,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/data/0f152e763/9c47cf8b9c714aa797631d5f1065cffe/FLAGdd4d6e79f [2019-11-15 21:37:49,455 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:37:49,456 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/sv-benchmarks/c/ldv-regression/test_union_cast.i [2019-11-15 21:37:49,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/data/0f152e763/9c47cf8b9c714aa797631d5f1065cffe/FLAGdd4d6e79f [2019-11-15 21:37:49,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/data/0f152e763/9c47cf8b9c714aa797631d5f1065cffe [2019-11-15 21:37:49,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:37:49,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:37:49,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:37:49,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:37:49,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:37:49,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:37:49" (1/1) ... [2019-11-15 21:37:49,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f4274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:49, skipping insertion in model container [2019-11-15 21:37:49,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:37:49" (1/1) ... [2019-11-15 21:37:49,912 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:37:49,930 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:37:50,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:37:50,196 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:37:50,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:37:50,227 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:37:50,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50 WrapperNode [2019-11-15 21:37:50,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:37:50,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:37:50,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:37:50,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:37:50,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:37:50,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:37:50,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:37:50,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:37:50,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... [2019-11-15 21:37:50,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:37:50,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:37:50,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:37:50,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:37:50,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/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 [2019-11-15 21:37:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:37:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 21:37:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:37:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:37:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:37:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:37:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:37:50,496 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:37:50,497 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 21:37:50,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:37:50 BoogieIcfgContainer [2019-11-15 21:37:50,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:37:50,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:37:50,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:37:50,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:37:50,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:37:49" (1/3) ... [2019-11-15 21:37:50,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abfacea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:37:50, skipping insertion in model container [2019-11-15 21:37:50,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:37:50" (2/3) ... [2019-11-15 21:37:50,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abfacea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:37:50, skipping insertion in model container [2019-11-15 21:37:50,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:37:50" (3/3) ... [2019-11-15 21:37:50,505 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union_cast.i [2019-11-15 21:37:50,513 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:37:50,519 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:37:50,529 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:37:50,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:37:50,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:37:50,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:37:50,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:37:50,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:37:50,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:37:50,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:37:50,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:37:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-15 21:37:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 21:37:50,568 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:37:50,569 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 21:37:50,571 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:37:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:37:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-15 21:37:50,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:37:50,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909598204] [2019-11-15 21:37:50,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:37:50,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:37:50,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:37:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:37:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:37:50,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909598204] [2019-11-15 21:37:50,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:37:50,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:37:50,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943004340] [2019-11-15 21:37:50,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:37:50,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:37:50,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:37:50,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:37:50,756 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-15 21:37:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:37:50,776 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-15 21:37:50,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:37:50,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-15 21:37:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:37:50,782 INFO L225 Difference]: With dead ends: 13 [2019-11-15 21:37:50,783 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:37:50,785 INFO L600 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 [2019-11-15 21:37:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:37:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:37:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:37:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:37:50,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-15 21:37:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:37:50,806 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:37:50,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:37:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:37:50,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:37:50,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 21:37:50,821 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 21:37:50,821 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L446 ceAbstractionStarter]: At program point L31(lines 19 32) the Hoare annotation is: true [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-15 21:37:50,822 INFO L443 ceAbstractionStarter]: For program point L4(lines 1 32) no Hoare annotation was computed. [2019-11-15 21:37:50,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:37:50 BoogieIcfgContainer [2019-11-15 21:37:50,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:37:50,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:37:50,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:37:50,830 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:37:50,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:37:50" (3/4) ... [2019-11-15 21:37:50,834 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:37:50,843 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 21:37:50,843 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 21:37:50,844 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 21:37:50,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d279998d-96cd-4465-9270-d81179ddb81c/bin/uautomizer/witness.graphml [2019-11-15 21:37:50,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:37:50,880 INFO L168 Benchmark]: Toolchain (without parser) took 990.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:37:50,881 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:37:50,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -231.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:37:50,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:37:50,882 INFO L168 Benchmark]: Boogie Preprocessor took 19.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:37:50,883 INFO L168 Benchmark]: RCFGBuilder took 222.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:37:50,884 INFO L168 Benchmark]: TraceAbstraction took 330.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:37:50,884 INFO L168 Benchmark]: Witness Printer took 48.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:37:50,887 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 337.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -231.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 330.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 48.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...