./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:03:31,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:03:31,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:03:31,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:03:31,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:03:31,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:03:31,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:03:31,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:03:31,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:03:31,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:03:31,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:03:31,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:03:31,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:03:31,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:03:31,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:03:31,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:03:31,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:03:31,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:03:31,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:03:31,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:03:31,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:03:31,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:03:31,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:03:31,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:03:31,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:03:31,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:03:31,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:03:31,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:03:31,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:03:31,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:03:31,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:03:31,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:03:31,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:03:31,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:03:31,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:03:31,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:03:31,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:03:31,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:03:31,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:03:31,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:03:31,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:03:31,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 05:03:31,946 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:03:31,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:03:31,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:03:31,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:03:31,948 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:03:31,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:03:31,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:03:31,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:03:31,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:03:31,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:03:31,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:03:31,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:03:31,949 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 05:03:31,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:03:31,950 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:03:31,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:03:31,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:03:31,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:03:31,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:03:31,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:03:31,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:03:31,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:03:31,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:03:31,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:03:31,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:03:31,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:03:31,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:03:31,952 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_72cec685-96d2-4f3d-99c0-15402e0deac1/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2019-11-20 05:03:32,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:03:32,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:03:32,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:03:32,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:03:32,174 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:03:32,174 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-20 05:03:32,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/data/79b49734f/0bbe328063d748aebac8f5a3bb0dc4cd/FLAGd41895732 [2019-11-20 05:03:32,655 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:03:32,655 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-20 05:03:32,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/data/79b49734f/0bbe328063d748aebac8f5a3bb0dc4cd/FLAGd41895732 [2019-11-20 05:03:33,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/data/79b49734f/0bbe328063d748aebac8f5a3bb0dc4cd [2019-11-20 05:03:33,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:03:33,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:03:33,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:33,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:03:33,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:03:33,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fcbc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33, skipping insertion in model container [2019-11-20 05:03:33,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,058 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:03:33,073 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:03:33,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:33,304 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:03:33,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:33,347 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:03:33,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33 WrapperNode [2019-11-20 05:03:33,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:33,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:33,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:03:33,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:03:33,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:33,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:03:33,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:03:33,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:03:33,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... [2019-11-20 05:03:33,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:03:33,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:03:33,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:03:33,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:03:33,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/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 [2019-11-20 05:03:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:03:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:03:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:03:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:03:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:03:33,885 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:03:33,886 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-20 05:03:33,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:33 BoogieIcfgContainer [2019-11-20 05:03:33,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:03:33,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:03:33,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:03:33,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:03:33,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:03:33" (1/3) ... [2019-11-20 05:03:33,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d925e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:33, skipping insertion in model container [2019-11-20 05:03:33,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:33" (2/3) ... [2019-11-20 05:03:33,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d925e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:33, skipping insertion in model container [2019-11-20 05:03:33,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:33" (3/3) ... [2019-11-20 05:03:33,912 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2019-11-20 05:03:33,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:03:33,930 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-20 05:03:33,953 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-20 05:03:33,992 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:03:33,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:03:33,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:03:33,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:03:33,993 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:03:33,996 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:03:33,997 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:03:33,997 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:03:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-20 05:03:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 05:03:34,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:34,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 05:03:34,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 05:03:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-20 05:03:34,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:34,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401268609] [2019-11-20 05:03:34,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:34,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401268609] [2019-11-20 05:03:34,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:34,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:03:34,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238533144] [2019-11-20 05:03:34,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:03:34,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:34,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:03:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,262 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-11-20 05:03:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:34,395 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2019-11-20 05:03:34,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:03:34,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 05:03:34,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:34,407 INFO L225 Difference]: With dead ends: 77 [2019-11-20 05:03:34,408 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 05:03:34,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 05:03:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2019-11-20 05:03:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-20 05:03:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-20 05:03:34,471 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2019-11-20 05:03:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:34,472 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-20 05:03:34,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:03:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-20 05:03:34,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 05:03:34,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:34,473 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 05:03:34,473 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 05:03:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-20 05:03:34,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:34,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853521224] [2019-11-20 05:03:34,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:34,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853521224] [2019-11-20 05:03:34,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:34,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:03:34,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798299571] [2019-11-20 05:03:34,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:03:34,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:34,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:03:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,495 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2019-11-20 05:03:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:34,563 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-20 05:03:34,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:03:34,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 05:03:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:34,565 INFO L225 Difference]: With dead ends: 38 [2019-11-20 05:03:34,566 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 05:03:34,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 05:03:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-11-20 05:03:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 05:03:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-20 05:03:34,574 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2019-11-20 05:03:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:34,574 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-20 05:03:34,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:03:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-20 05:03:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 05:03:34,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:34,575 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 05:03:34,576 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 05:03:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-11-20 05:03:34,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:34,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055379775] [2019-11-20 05:03:34,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:34,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055379775] [2019-11-20 05:03:34,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:34,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:03:34,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53581179] [2019-11-20 05:03:34,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:03:34,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:34,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:03:34,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,621 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-11-20 05:03:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:34,668 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-20 05:03:34,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:03:34,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 05:03:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:34,669 INFO L225 Difference]: With dead ends: 28 [2019-11-20 05:03:34,670 INFO L226 Difference]: Without dead ends: 24 [2019-11-20 05:03:34,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:03:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-20 05:03:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-20 05:03:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 05:03:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-20 05:03:34,675 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2019-11-20 05:03:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:34,675 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 05:03:34,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:03:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-20 05:03:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 05:03:34,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:34,677 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:34,677 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 05:03:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2019-11-20 05:03:34,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:34,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480399930] [2019-11-20 05:03:34,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:03:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:03:34,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480399930] [2019-11-20 05:03:34,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:03:34,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:03:34,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278588706] [2019-11-20 05:03:34,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:03:34,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:03:34,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:03:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:03:34,790 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2019-11-20 05:03:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:03:34,835 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-20 05:03:34,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:03:34,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-20 05:03:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:03:34,836 INFO L225 Difference]: With dead ends: 24 [2019-11-20 05:03:34,837 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 05:03:34,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:03:34,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 05:03:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-20 05:03:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 05:03:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-20 05:03:34,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2019-11-20 05:03:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:03:34,842 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-20 05:03:34,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:03:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-20 05:03:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 05:03:34,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:34,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:03:34,843 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 05:03:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2019-11-20 05:03:34,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:34,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90624385] [2019-11-20 05:03:34,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:03:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:03:34,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:03:34,980 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:03:35,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:03:35 BoogieIcfgContainer [2019-11-20 05:03:35,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:03:35,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:03:35,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:03:35,018 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:03:35,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:33" (3/4) ... [2019-11-20 05:03:35,022 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:03:35,067 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72cec685-96d2-4f3d-99c0-15402e0deac1/bin/uautomizer/witness.graphml [2019-11-20 05:03:35,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:03:35,070 INFO L168 Benchmark]: Toolchain (without parser) took 2028.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:35,070 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:35,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:35,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:35,072 INFO L168 Benchmark]: Boogie Preprocessor took 28.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:35,073 INFO L168 Benchmark]: RCFGBuilder took 470.53 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:35,073 INFO L168 Benchmark]: TraceAbstraction took 1128.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:35,074 INFO L168 Benchmark]: Witness Printer took 49.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:35,077 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 470.53 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1128.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 49.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 10 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 93 SDslu, 59 SDs, 0 SdLazy, 63 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 incorrect! Received shutdown request...