./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 9a8b2e8d 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_1.3.100.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 0.1.25-9a8b2e8 [2020-10-20 06:25:45,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:45,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:45,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:45,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:45,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:45,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:45,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:45,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:45,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:45,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:45,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:45,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:45,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:45,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:45,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:45,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:45,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:45,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:45,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:45,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:45,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:45,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:45,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:45,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:45,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:45,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:45,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:45,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:45,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:45,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:45,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:45,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:45,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:45,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:45,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:45,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:45,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:45,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:45,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:45,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:45,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:46,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:46,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:46,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:46,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:46,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:46,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:46,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:46,039 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:46,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:46,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:46,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:46,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:46,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:46,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:46,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:46,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:46,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:46,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:46,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:46,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:46,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:46,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:46,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:46,042 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 [2020-10-20 06:25:46,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:46,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:46,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:46,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:46,260 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:46,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2020-10-20 06:25:46,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8e29270/c939cae924604a4e810b6a15290fa3d2/FLAG4b0fd14db [2020-10-20 06:25:46,874 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:46,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2020-10-20 06:25:46,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8e29270/c939cae924604a4e810b6a15290fa3d2/FLAG4b0fd14db [2020-10-20 06:25:47,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8e29270/c939cae924604a4e810b6a15290fa3d2 [2020-10-20 06:25:47,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:47,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:47,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:47,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:47,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:47,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e3d2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47, skipping insertion in model container [2020-10-20 06:25:47,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:47,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:47,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:47,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:47,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:47,452 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:47,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47 WrapperNode [2020-10-20 06:25:47,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:47,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:47,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:47,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:47,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:47,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:47,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:47,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:47,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (1/1) ... [2020-10-20 06:25:47,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:47,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:47,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:47,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:47,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (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 [2020-10-20 06:25:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:25:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:25:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:25:47,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:47,899 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 06:25:47,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:47 BoogieIcfgContainer [2020-10-20 06:25:47,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:47,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:47,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:47,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:47,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:47" (1/3) ... [2020-10-20 06:25:47,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:47, skipping insertion in model container [2020-10-20 06:25:47,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:47" (2/3) ... [2020-10-20 06:25:47,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:47, skipping insertion in model container [2020-10-20 06:25:47,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:47" (3/3) ... [2020-10-20 06:25:47,912 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcspn.c [2020-10-20 06:25:47,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:47,935 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 06:25:47,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 06:25:48,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:48,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:48,008 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:48,008 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:48,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:48,008 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:48,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:48,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 06:25:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:48,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:48,042 INFO L429 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]=== [2020-10-20 06:25:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-10-20 06:25:48,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:48,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881652844] [2020-10-20 06:25:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:48,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881652844] [2020-10-20 06:25:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:48,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:48,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833661537] [2020-10-20 06:25:48,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:48,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:48,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:48,220 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-20 06:25:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:48,367 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-10-20 06:25:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:48,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 06:25:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:48,380 INFO L225 Difference]: With dead ends: 75 [2020-10-20 06:25:48,381 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 06:25:48,385 INFO L677 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 [2020-10-20 06:25:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 06:25:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-10-20 06:25:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:25:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-20 06:25:48,426 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2020-10-20 06:25:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:48,426 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-20 06:25:48,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-20 06:25:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:48,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:48,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:48,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:48,429 INFO L429 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]=== [2020-10-20 06:25:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-20 06:25:48,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:48,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188818639] [2020-10-20 06:25:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:48,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188818639] [2020-10-20 06:25:48,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:48,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:48,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774595204] [2020-10-20 06:25:48,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:48,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:48,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:48,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:48,461 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2020-10-20 06:25:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:48,499 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-20 06:25:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:48,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 06:25:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:48,501 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:25:48,501 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 06:25:48,502 INFO L677 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 [2020-10-20 06:25:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 06:25:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2020-10-20 06:25:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:25:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-20 06:25:48,507 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2020-10-20 06:25:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:48,508 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-20 06:25:48,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-20 06:25:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:25:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:48,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:25:48,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:48,510 INFO L429 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]=== [2020-10-20 06:25:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-20 06:25:48,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:48,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570277952] [2020-10-20 06:25:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:48,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570277952] [2020-10-20 06:25:48,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:48,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:48,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737465170] [2020-10-20 06:25:48,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:48,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:48,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:48,543 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2020-10-20 06:25:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:48,572 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-20 06:25:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:48,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:25:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:48,574 INFO L225 Difference]: With dead ends: 17 [2020-10-20 06:25:48,574 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:25:48,575 INFO L677 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 [2020-10-20 06:25:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:25:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:25:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:25:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:25:48,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-10-20 06:25:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:48,576 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:25:48,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:25:48,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:25:48,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:25:48,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:25:48,604 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,604 INFO L270 CegarLoopResult]: At program point L19(lines 12 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2020-10-20 06:25:48,604 INFO L277 CegarLoopResult]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2020-10-20 06:25:48,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,605 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:25:48,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point L33-3(lines 33 34) no Hoare annotation was computed. [2020-10-20 06:25:48,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,607 INFO L277 CegarLoopResult]: At program point L33-5(lines 33 34) the Hoare annotation is: true [2020-10-20 06:25:48,607 INFO L274 CegarLoopResult]: For program point L33-6(lines 33 34) no Hoare annotation was computed. [2020-10-20 06:25:48,607 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,607 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-20 06:25:48,607 INFO L277 CegarLoopResult]: At program point L42(lines 41 43) the Hoare annotation is: true [2020-10-20 06:25:48,607 INFO L277 CegarLoopResult]: At program point L38(lines 25 39) the Hoare annotation is: true [2020-10-20 06:25:48,607 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,608 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 37) no Hoare annotation was computed. [2020-10-20 06:25:48,608 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 37) no Hoare annotation was computed. [2020-10-20 06:25:48,609 INFO L277 CegarLoopResult]: At program point L30-4(lines 30 37) the Hoare annotation is: true [2020-10-20 06:25:48,609 INFO L274 CegarLoopResult]: For program point L30-5(lines 30 37) no Hoare annotation was computed. [2020-10-20 06:25:48,609 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,609 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,610 INFO L274 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,610 INFO L274 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,610 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-20 06:25:48,610 INFO L274 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-10-20 06:25:48,610 INFO L274 CegarLoopResult]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2020-10-20 06:25:48,611 INFO L274 CegarLoopResult]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2020-10-20 06:25:48,611 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:48,611 INFO L274 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-10-20 06:25:48,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:48 BoogieIcfgContainer [2020-10-20 06:25:48,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:48,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:48,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:48,635 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:48,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:47" (3/4) ... [2020-10-20 06:25:48,640 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:25:48,653 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:25:48,654 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:25:48,654 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:25:48,724 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:48,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:48,727 INFO L168 Benchmark]: Toolchain (without parser) took 1561.94 ms. Allocated memory was 44.0 MB in the beginning and 50.9 MB in the end (delta: 6.8 MB). Free memory was 25.2 MB in the beginning and 19.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,728 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 32.5 MB. Free memory was 11.9 MB in the beginning and 11.9 MB in the end (delta: 51.3 kB). Peak memory consumption was 51.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.67 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 13.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 44.0 MB. Free memory was 13.8 MB in the beginning and 24.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,730 INFO L168 Benchmark]: Boogie Preprocessor took 28.20 ms. Allocated memory is still 44.0 MB. Free memory was 24.4 MB in the beginning and 22.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,731 INFO L168 Benchmark]: RCFGBuilder took 371.08 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 22.5 MB in the beginning and 25.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,732 INFO L168 Benchmark]: TraceAbstraction took 730.45 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 24.8 MB in the beginning and 23.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,733 INFO L168 Benchmark]: Witness Printer took 90.30 ms. Allocated memory is still 50.9 MB. Free memory was 23.1 MB in the beginning and 19.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:48,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 32.5 MB. Free memory was 11.9 MB in the beginning and 11.9 MB in the end (delta: 51.3 kB). Peak memory consumption was 51.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 282.67 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 13.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 44.0 MB. Free memory was 13.8 MB in the beginning and 24.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.20 ms. Allocated memory is still 44.0 MB. Free memory was 24.4 MB in the beginning and 22.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 371.08 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 22.5 MB in the beginning and 25.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 730.45 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 24.8 MB in the beginning and 23.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. * Witness Printer took 90.30 ms. Allocated memory is still 50.9 MB. Free memory was 23.1 MB in the beginning and 19.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 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: 1 <= length && length <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...