./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f94b058015be4fc42a3d40d63b8ed2b8d3be3933ae3f7b0cb4e17bd99a68e898 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:24:01,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:24:01,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:24:01,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:24:01,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:24:01,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:24:01,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:24:01,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:24:01,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:24:01,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:24:01,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:24:01,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:24:01,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:24:01,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:24:01,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:24:01,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:24:01,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:24:01,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:24:01,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:24:01,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:24:01,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:24:01,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:24:01,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:24:01,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:24:01,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:24:01,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:24:01,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:24:01,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:24:01,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:24:01,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:24:01,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:24:01,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:24:01,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:24:01,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:24:01,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:24:01,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:24:01,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:24:01,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:24:01,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:24:01,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:24:01,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:24:01,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:24:01,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:24:01,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:24:01,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:24:01,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:24:01,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:24:01,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:24:01,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:24:01,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:24:01,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:24:01,932 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:24:01,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:24:01,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:24:01,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:24:01,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:24:01,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:24:01,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:24:01,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:24:01,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:24:01,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:24:01,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:24:01,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:24:01,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:24:01,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:24:01,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:24:01,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:01,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:24:01,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:24:01,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:24:01,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:24:01,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:24:01,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:24:01,938 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f94b058015be4fc42a3d40d63b8ed2b8d3be3933ae3f7b0cb4e17bd99a68e898 [2022-07-23 13:24:02,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:24:02,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:24:02,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:24:02,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:24:02,187 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:24:02,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2022-07-23 13:24:02,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30e6f344/3b58542ec32b47849c3675eca4ec1c75/FLAG450b4680b [2022-07-23 13:24:02,731 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:24:02,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2022-07-23 13:24:02,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30e6f344/3b58542ec32b47849c3675eca4ec1c75/FLAG450b4680b [2022-07-23 13:24:03,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30e6f344/3b58542ec32b47849c3675eca4ec1c75 [2022-07-23 13:24:03,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:24:03,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:24:03,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:03,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:24:03,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:24:03,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe5fd95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03, skipping insertion in model container [2022-07-23 13:24:03,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:24:03,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:24:03,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:03,314 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:24:03,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:03,334 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:24:03,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03 WrapperNode [2022-07-23 13:24:03,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:03,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:03,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:24:03,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:24:03,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,362 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-07-23 13:24:03,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:03,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:24:03,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:24:03,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:24:03,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:24:03,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:24:03,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:24:03,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:24:03,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (1/1) ... [2022-07-23 13:24:03,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:24:03,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:24:03,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:24:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 13:24:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2022-07-23 13:24:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2022-07-23 13:24:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 13:24:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:24:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:24:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 13:24:03,514 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:24:03,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:24:03,688 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:24:03,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:24:03,694 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 13:24:03,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:03 BoogieIcfgContainer [2022-07-23 13:24:03,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:24:03,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:24:03,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:24:03,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:24:03,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:24:03" (1/3) ... [2022-07-23 13:24:03,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3369ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:03, skipping insertion in model container [2022-07-23 13:24:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:03" (2/3) ... [2022-07-23 13:24:03,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3369ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:03, skipping insertion in model container [2022-07-23 13:24:03,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:03" (3/3) ... [2022-07-23 13:24:03,722 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcmp.c [2022-07-23 13:24:03,735 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:24:03,735 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-23 13:24:03,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:24:03,804 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b7e4898, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@224784cb [2022-07-23 13:24:03,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-23 13:24:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:24:03,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:03,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:03,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-23 13:24:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash 871996244, now seen corresponding path program 1 times [2022-07-23 13:24:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281523557] [2022-07-23 13:24:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:03,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:04,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281523557] [2022-07-23 13:24:04,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281523557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:04,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:04,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828207051] [2022-07-23 13:24:04,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:04,079 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:04,133 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-07-23 13:24:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:24:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:04,147 INFO L225 Difference]: With dead ends: 37 [2022-07-23 13:24:04,148 INFO L226 Difference]: Without dead ends: 18 [2022-07-23 13:24:04,152 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:24:04,155 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:04,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 44 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-23 13:24:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2022-07-23 13:24:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:24:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-23 13:24:04,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-07-23 13:24:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:04,192 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-23 13:24:04,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-23 13:24:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:24:04,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:04,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:04,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:24:04,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-23 13:24:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 871998166, now seen corresponding path program 1 times [2022-07-23 13:24:04,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:04,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185245999] [2022-07-23 13:24:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:04,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:04,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185245999] [2022-07-23 13:24:04,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185245999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:04,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:04,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555581550] [2022-07-23 13:24:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:04,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:04,313 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:04,330 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-07-23 13:24:04,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:04,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:24:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:04,331 INFO L225 Difference]: With dead ends: 15 [2022-07-23 13:24:04,332 INFO L226 Difference]: Without dead ends: 14 [2022-07-23 13:24:04,332 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:24:04,334 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:04,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-23 13:24:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-07-23 13:24:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:24:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-23 13:24:04,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-07-23 13:24:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:04,342 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-23 13:24:04,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-23 13:24:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:24:04,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:04,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:04,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:24:04,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-23 13:24:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1262079829, now seen corresponding path program 1 times [2022-07-23 13:24:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246462650] [2022-07-23 13:24:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:04,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246462650] [2022-07-23 13:24:04,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246462650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:04,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:04,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357215594] [2022-07-23 13:24:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:04,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:04,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:04,392 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:04,402 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-07-23 13:24:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:24:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:04,403 INFO L225 Difference]: With dead ends: 12 [2022-07-23 13:24:04,403 INFO L226 Difference]: Without dead ends: 0 [2022-07-23 13:24:04,404 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:24:04,410 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:04,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-23 13:24:04,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-23 13:24:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 13:24:04,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-23 13:24:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:04,415 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 13:24:04,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-23 13:24:04,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-23 13:24:04,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-07-23 13:24:04,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-07-23 13:24:04,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:24:04,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-23 13:24:04,433 INFO L899 garLoopResultBuilder]: For program point build_nondet_StringFINAL(lines 12 20) no Hoare annotation was computed. [2022-07-23 13:24:04,433 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2022-07-23 13:24:04,433 INFO L899 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2022-07-23 13:24:04,433 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-07-23 13:24:04,434 INFO L899 garLoopResultBuilder]: For program point build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-07-23 13:24:04,434 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2022-07-23 13:24:04,434 INFO L899 garLoopResultBuilder]: For program point build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-07-23 13:24:04,434 INFO L902 garLoopResultBuilder]: At program point build_nondet_StringENTRY(lines 12 20) the Hoare annotation is: true [2022-07-23 13:24:04,434 INFO L899 garLoopResultBuilder]: For program point build_nondet_StringEXIT(lines 12 20) no Hoare annotation was computed. [2022-07-23 13:24:04,435 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-23 13:24:04,435 INFO L902 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2022-07-23 13:24:04,435 INFO L902 garLoopResultBuilder]: At program point L44-1(line 44) the Hoare annotation is: true [2022-07-23 13:24:04,436 INFO L899 garLoopResultBuilder]: For program point L44-2(line 44) no Hoare annotation was computed. [2022-07-23 13:24:04,436 INFO L902 garLoopResultBuilder]: At program point L44-3(lines 43 45) the Hoare annotation is: true [2022-07-23 13:24:04,436 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2022-07-23 13:24:04,436 INFO L899 garLoopResultBuilder]: For program point L40-2(line 40) no Hoare annotation was computed. [2022-07-23 13:24:04,436 INFO L902 garLoopResultBuilder]: At program point L40-3(lines 26 41) the Hoare annotation is: true [2022-07-23 13:24:04,436 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-23 13:24:04,437 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2022-07-23 13:24:04,437 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-23 13:24:04,437 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2022-07-23 13:24:04,437 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-23 13:24:04,438 INFO L902 garLoopResultBuilder]: At program point L32-5(lines 32 35) the Hoare annotation is: true [2022-07-23 13:24:04,438 INFO L899 garLoopResultBuilder]: For program point L32-6(lines 32 35) no Hoare annotation was computed. [2022-07-23 13:24:04,441 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-23 13:24:04,445 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 13:24:04,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:24:04 BoogieIcfgContainer [2022-07-23 13:24:04,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 13:24:04,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 13:24:04,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 13:24:04,464 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 13:24:04,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:03" (3/4) ... [2022-07-23 13:24:04,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-23 13:24:04,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure build_nondet_String [2022-07-23 13:24:04,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-23 13:24:04,476 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-23 13:24:04,476 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-23 13:24:04,476 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-23 13:24:04,502 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 13:24:04,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 13:24:04,508 INFO L158 Benchmark]: Toolchain (without parser) took 1381.48ms. Allocated memory is still 109.1MB. Free memory was 77.1MB in the beginning and 73.2MB in the end (delta: 4.0MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,508 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 36.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:04,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.55ms. Allocated memory is still 109.1MB. Free memory was 76.9MB in the beginning and 85.6MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.84ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,510 INFO L158 Benchmark]: Boogie Preprocessor took 17.78ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,510 INFO L158 Benchmark]: RCFGBuilder took 315.60ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 72.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,510 INFO L158 Benchmark]: TraceAbstraction took 745.96ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 76.3MB in the end (delta: -4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:04,511 INFO L158 Benchmark]: Witness Printer took 43.82ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 73.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:04,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 36.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.55ms. Allocated memory is still 109.1MB. Free memory was 76.9MB in the beginning and 85.6MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.84ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.78ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.60ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 72.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 745.96ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 76.3MB in the end (delta: -4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.82ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 73.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 40 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 6 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-23 13:24:04,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE