./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/cstrcspn.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 f39f60c3148e6a8957b92a35d12d506fd8229368 .......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:51,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:51,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:52,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:52,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:52,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:52,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:52,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:52,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:52,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:52,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:52,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:52,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:52,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:52,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:52,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:52,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:52,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:52,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:52,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:52,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:52,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:52,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:52,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:52,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:52,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:52,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:52,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:52,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:52,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:52,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:52,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:52,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:52,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:52,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:52,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:52,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:52,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:52,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:52,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:52,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:52,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:52,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:52,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:52,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:52,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:52,106 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:52,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:52,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:52,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:52,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:52,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:52,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:52,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:52,108 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:52,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:52,110 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:52,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:52,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:52,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:52,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:52,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:52,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:52,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:52,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:52,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:52,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:52,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:52,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:52,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:52,113 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 -> /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 -> f39f60c3148e6a8957b92a35d12d506fd8229368 [2019-11-28 20:24:52,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:52,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:52,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:52,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:52,474 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:52,476 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2019-11-28 20:24:52,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e3290b2d/33946289ea6e41f0a80836ec39096e13/FLAGb10b6e65d [2019-11-28 20:24:53,011 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:53,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2019-11-28 20:24:53,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e3290b2d/33946289ea6e41f0a80836ec39096e13/FLAGb10b6e65d [2019-11-28 20:24:53,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e3290b2d/33946289ea6e41f0a80836ec39096e13 [2019-11-28 20:24:53,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:53,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:53,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:53,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:53,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:53,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd0655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53, skipping insertion in model container [2019-11-28 20:24:53,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:53,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:53,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:53,652 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:53,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:53,684 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:53,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53 WrapperNode [2019-11-28 20:24:53,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:53,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:53,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:53,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:53,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:53,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:53,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:53,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:53,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... [2019-11-28 20:24:53,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:53,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:53,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:53,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:53,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:24:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:24:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:24:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:24:54,200 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:54,201 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-28 20:24:54,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:54 BoogieIcfgContainer [2019-11-28 20:24:54,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:54,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:54,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:54,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:54,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:53" (1/3) ... [2019-11-28 20:24:54,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a833c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:54, skipping insertion in model container [2019-11-28 20:24:54,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:53" (2/3) ... [2019-11-28 20:24:54,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a833c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:54, skipping insertion in model container [2019-11-28 20:24:54,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:54" (3/3) ... [2019-11-28 20:24:54,211 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcspn.c [2019-11-28 20:24:54,222 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:54,229 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-28 20:24:54,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-28 20:24:54,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:54,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:54,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:54,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:54,269 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:54,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:54,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:54,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-28 20:24:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:54,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:54,295 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:54,296 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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:54,303 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-28 20:24:54,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:54,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041566381] [2019-11-28 20:24:54,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:54,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041566381] [2019-11-28 20:24:54,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:54,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:54,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527888113] [2019-11-28 20:24:54,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:54,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:54,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:54,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:54,454 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-11-28 20:24:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:54,589 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2019-11-28 20:24:54,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:54,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:54,601 INFO L225 Difference]: With dead ends: 75 [2019-11-28 20:24:54,601 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 20:24:54,605 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 [2019-11-28 20:24:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 20:24:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-28 20:24:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 20:24:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-11-28 20:24:54,637 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2019-11-28 20:24:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:54,637 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-11-28 20:24:54,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-11-28 20:24:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:54,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:54,638 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:54,639 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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-28 20:24:54,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:54,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704170715] [2019-11-28 20:24:54,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:54,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704170715] [2019-11-28 20:24:54,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:54,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:54,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551160539] [2019-11-28 20:24:54,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:54,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:54,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:54,667 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2019-11-28 20:24:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:54,719 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-28 20:24:54,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:54,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:54,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:54,721 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:24:54,722 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 20:24:54,724 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 [2019-11-28 20:24:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 20:24:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2019-11-28 20:24:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:24:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-28 20:24:54,730 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2019-11-28 20:24:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:54,730 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-28 20:24:54,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-28 20:24:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:24:54,732 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:54,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:24:54,732 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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:54,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:54,733 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-11-28 20:24:54,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:54,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810976847] [2019-11-28 20:24:54,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:54,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810976847] [2019-11-28 20:24:54,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:54,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:54,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085696756] [2019-11-28 20:24:54,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:54,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:54,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:54,771 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2019-11-28 20:24:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:54,798 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-28 20:24:54,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:54,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 20:24:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:54,799 INFO L225 Difference]: With dead ends: 17 [2019-11-28 20:24:54,799 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:24:54,800 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 [2019-11-28 20:24:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:24:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:24:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:24:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:24:54,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-28 20:24:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:54,801 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:24:54,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:24:54,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:24:54,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:24:54,826 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,827 INFO L242 CegarLoopResult]: At program point L19(lines 12 20) the Hoare annotation is: (and (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2019-11-28 20:24:54,827 INFO L249 CegarLoopResult]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2019-11-28 20:24:54,827 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,827 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point L33-3(lines 33 34) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L249 CegarLoopResult]: At program point L33-5(lines 33 34) the Hoare annotation is: true [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point L33-6(lines 33 34) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,829 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-28 20:24:54,830 INFO L249 CegarLoopResult]: At program point L42(lines 41 43) the Hoare annotation is: true [2019-11-28 20:24:54,830 INFO L249 CegarLoopResult]: At program point L38(lines 25 39) the Hoare annotation is: true [2019-11-28 20:24:54,830 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,830 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 37) no Hoare annotation was computed. [2019-11-28 20:24:54,830 INFO L246 CegarLoopResult]: For program point L30-3(lines 30 37) no Hoare annotation was computed. [2019-11-28 20:24:54,830 INFO L249 CegarLoopResult]: At program point L30-4(lines 30 37) the Hoare annotation is: true [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L30-5(lines 30 37) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-28 20:24:54,831 INFO L246 CegarLoopResult]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2019-11-28 20:24:54,832 INFO L246 CegarLoopResult]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2019-11-28 20:24:54,832 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:24:54,832 INFO L246 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-28 20:24:54,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:54 BoogieIcfgContainer [2019-11-28 20:24:54,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:54,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:54,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:54,857 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:54,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:54" (3/4) ... [2019-11-28 20:24:54,861 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:24:54,885 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 20:24:54,885 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 20:24:54,886 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:24:54,965 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:54,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:54,968 INFO L168 Benchmark]: Toolchain (without parser) took 1567.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -97.7 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,968 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:54,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,971 INFO L168 Benchmark]: Boogie Preprocessor took 39.06 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,971 INFO L168 Benchmark]: RCFGBuilder took 364.90 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,972 INFO L168 Benchmark]: TraceAbstraction took 651.23 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,973 INFO L168 Benchmark]: Witness Printer took 110.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:54,976 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 112.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.06 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 364.90 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 651.23 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Witness Printer took 110.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: length <= 2147483647 && 1 <= length - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 8 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 47 SDslu, 20 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, 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=35occurred 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 12 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...