./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/id_build.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/loop-invgen/id_build.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72f23f9d68f7a4a5e2da013083a3deecb0591593 ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:16:17,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:16:17,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:16:17,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:16:17,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:16:17,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:16:17,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:16:17,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:16:17,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:16:17,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:16:17,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:16:17,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:16:17,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:16:17,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:16:17,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:16:17,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:16:17,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:16:17,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:16:17,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:16:17,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:16:17,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:16:17,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:16:17,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:16:17,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:16:17,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:16:18,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:16:18,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:16:18,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:16:18,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:16:18,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:16:18,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:16:18,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:16:18,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:16:18,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:16:18,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:16:18,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:16:18,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:16:18,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:16:18,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:16:18,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:16:18,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:16:18,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:16:18,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:16:18,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:16:18,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:16:18,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:16:18,052 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:16:18,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:16:18,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:16:18,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:16:18,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:16:18,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:16:18,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:16:18,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:16:18,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:16:18,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:16:18,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:16:18,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:16:18,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:16:18,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:16:18,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:16:18,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:16:18,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:16:18,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:16:18,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:16:18,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:16:18,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:16:18,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:16:18,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:16:18,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:16:18,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:16:18,060 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72f23f9d68f7a4a5e2da013083a3deecb0591593 [2020-07-28 18:16:18,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:16:18,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:16:18,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:16:18,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:16:18,426 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:16:18,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_build.i [2020-07-28 18:16:18,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9217015/828bf97c8e8648868ea70c8875939a12/FLAGbc0259e2e [2020-07-28 18:16:18,932 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:16:18,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i [2020-07-28 18:16:18,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9217015/828bf97c8e8648868ea70c8875939a12/FLAGbc0259e2e [2020-07-28 18:16:19,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9217015/828bf97c8e8648868ea70c8875939a12 [2020-07-28 18:16:19,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:16:19,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:16:19,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:16:19,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:16:19,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:16:19,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66179bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19, skipping insertion in model container [2020-07-28 18:16:19,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:16:19,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:16:19,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:16:19,620 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:16:19,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:16:19,657 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:16:19,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19 WrapperNode [2020-07-28 18:16:19,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:16:19,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:16:19,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:16:19,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:16:19,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:16:19,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:16:19,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:16:19,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:16:19,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (1/1) ... [2020-07-28 18:16:19,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:16:19,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:16:19,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:16:19,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:16:19,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (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 [2020-07-28 18:16:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:16:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:16:20,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:16:20,087 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-28 18:16:20,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:16:20 BoogieIcfgContainer [2020-07-28 18:16:20,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:16:20,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:16:20,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:16:20,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:16:20,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:16:19" (1/3) ... [2020-07-28 18:16:20,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a34718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:16:20, skipping insertion in model container [2020-07-28 18:16:20,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:16:19" (2/3) ... [2020-07-28 18:16:20,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a34718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:16:20, skipping insertion in model container [2020-07-28 18:16:20,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:16:20" (3/3) ... [2020-07-28 18:16:20,100 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-07-28 18:16:20,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:16:20,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 18:16:20,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 18:16:20,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:16:20,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:16:20,169 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:16:20,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:16:20,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:16:20,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:16:20,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:16:20,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:16:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-28 18:16:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:16:20,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:16:20,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:16:20,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:16:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:16:20,211 INFO L82 PathProgramCache]: Analyzing trace with hash 29837770, now seen corresponding path program 1 times [2020-07-28 18:16:20,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:16:20,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24479554] [2020-07-28 18:16:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:16:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:16:20,426 INFO L280 TraceCheckUtils]: 0: Hoare triple {19#true} havoc main_#res;havoc main_#t~nondet0, main_#t~post2, main_#t~post1, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~nlen~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; {19#true} is VALID [2020-07-28 18:16:20,428 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#true} assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; {21#(<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~nlen~0)} is VALID [2020-07-28 18:16:20,430 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#(<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~nlen~0)} assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {22#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2020-07-28 18:16:20,431 INFO L280 TraceCheckUtils]: 3: Hoare triple {22#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume 0 == __VERIFIER_assert_~cond; {20#false} is VALID [2020-07-28 18:16:20,431 INFO L280 TraceCheckUtils]: 4: Hoare triple {20#false} assume !false; {20#false} is VALID [2020-07-28 18:16:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:16:20,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24479554] [2020-07-28 18:16:20,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:16:20,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 18:16:20,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442777201] [2020-07-28 18:16:20,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-28 18:16:20,443 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:16:20,446 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:16:20,466 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:16:20,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:16:20,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 18:16:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:16:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:16:20,476 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-07-28 18:16:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:20,638 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-07-28 18:16:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 18:16:20,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-28 18:16:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:16:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:16:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-28 18:16:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:16:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-28 18:16:20,652 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 49 transitions. [2020-07-28 18:16:20,732 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:16:20,743 INFO L225 Difference]: With dead ends: 36 [2020-07-28 18:16:20,743 INFO L226 Difference]: Without dead ends: 13 [2020-07-28 18:16:20,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 18:16:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-28 18:16:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2020-07-28 18:16:20,787 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:16:20,788 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 10 states. [2020-07-28 18:16:20,789 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 10 states. [2020-07-28 18:16:20,789 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 10 states. [2020-07-28 18:16:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:20,792 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-07-28 18:16:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-07-28 18:16:20,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:16:20,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:16:20,793 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 13 states. [2020-07-28 18:16:20,794 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 13 states. [2020-07-28 18:16:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:20,796 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-07-28 18:16:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-07-28 18:16:20,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:16:20,797 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:16:20,797 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:16:20,797 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:16:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 18:16:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-07-28 18:16:20,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2020-07-28 18:16:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:16:20,801 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-07-28 18:16:20,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:16:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-07-28 18:16:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 18:16:20,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:16:20,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:16:20,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:16:20,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:16:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:16:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1390518387, now seen corresponding path program 1 times [2020-07-28 18:16:20,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:16:20,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877541823] [2020-07-28 18:16:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:16:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:16:20,877 INFO L280 TraceCheckUtils]: 0: Hoare triple {116#true} havoc main_#res;havoc main_#t~nondet0, main_#t~post2, main_#t~post1, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~nlen~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; {118#(<= 0 ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:16:20,878 INFO L280 TraceCheckUtils]: 1: Hoare triple {118#(<= 0 ULTIMATE.start_main_~i~0)} assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; {118#(<= 0 ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:16:20,879 INFO L280 TraceCheckUtils]: 2: Hoare triple {118#(<= 0 ULTIMATE.start_main_~i~0)} assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {118#(<= 0 ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:16:20,880 INFO L280 TraceCheckUtils]: 3: Hoare triple {118#(<= 0 ULTIMATE.start_main_~i~0)} assume !(0 == __VERIFIER_assert_~cond); {118#(<= 0 ULTIMATE.start_main_~i~0)} is VALID [2020-07-28 18:16:20,882 INFO L280 TraceCheckUtils]: 4: Hoare triple {118#(<= 0 ULTIMATE.start_main_~i~0)} __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {119#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2020-07-28 18:16:20,883 INFO L280 TraceCheckUtils]: 5: Hoare triple {119#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume 0 == __VERIFIER_assert_~cond; {117#false} is VALID [2020-07-28 18:16:20,883 INFO L280 TraceCheckUtils]: 6: Hoare triple {117#false} assume !false; {117#false} is VALID [2020-07-28 18:16:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:16:20,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877541823] [2020-07-28 18:16:20,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:16:20,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 18:16:20,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560634793] [2020-07-28 18:16:20,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-28 18:16:20,887 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:16:20,888 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:16:20,898 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:16:20,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:16:20,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 18:16:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:16:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:16:20,900 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-07-28 18:16:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:20,975 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-07-28 18:16:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:16:20,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-28 18:16:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:16:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:16:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-07-28 18:16:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:16:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-07-28 18:16:20,980 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 15 transitions. [2020-07-28 18:16:21,003 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:16:21,004 INFO L225 Difference]: With dead ends: 13 [2020-07-28 18:16:21,004 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:16:21,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 18:16:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:16:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:16:21,006 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:16:21,006 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:16:21,007 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:16:21,007 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:16:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:21,008 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:16:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:16:21,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:16:21,009 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:16:21,009 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:16:21,009 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:16:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:16:21,010 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:16:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:16:21,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:16:21,011 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:16:21,011 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:16:21,012 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:16:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:16:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:16:21,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-07-28 18:16:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:16:21,013 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:16:21,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:16:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:16:21,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:16:21,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 18:16:21,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:16:21,079 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:16:21,080 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-28 18:16:21,080 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~nlen~0)) [2020-07-28 18:16:21,080 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-28 18:16:21,081 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~nlen~0)) [2020-07-28 18:16:21,081 INFO L268 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-07-28 18:16:21,081 INFO L264 CegarLoopResult]: At program point L7-5(lines 1 23) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~nlen~0)) [2020-07-28 18:16:21,081 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:16:21,082 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:16:21,082 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-28 18:16:21,082 INFO L271 CegarLoopResult]: At program point L22(lines 13 23) the Hoare annotation is: true [2020-07-28 18:16:21,082 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 21) no Hoare annotation was computed. [2020-07-28 18:16:21,083 INFO L264 CegarLoopResult]: At program point L16-3(lines 16 21) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~0) [2020-07-28 18:16:21,083 INFO L268 CegarLoopResult]: For program point L16-4(lines 16 21) no Hoare annotation was computed. [2020-07-28 18:16:21,083 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-28 18:16:21,084 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-07-28 18:16:21,088 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:16:21,089 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-28 18:16:21,089 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-28 18:16:21,091 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-28 18:16:21,091 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-28 18:16:21,091 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-28 18:16:21,091 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 18:16:21,091 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:16:21,092 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-28 18:16:21,092 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 18:16:21,092 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 18:16:21,092 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:16:21,093 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 18:16:21,093 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 18:16:21,093 WARN L170 areAnnotationChecker]: L7-3 has no Hoare annotation [2020-07-28 18:16:21,093 WARN L170 areAnnotationChecker]: L7-3 has no Hoare annotation [2020-07-28 18:16:21,093 WARN L170 areAnnotationChecker]: L7-3 has no Hoare annotation [2020-07-28 18:16:21,094 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 18:16:21,094 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 18:16:21,095 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:16:21,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:16:21 BoogieIcfgContainer [2020-07-28 18:16:21,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:16:21,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:16:21,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:16:21,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:16:21,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:16:20" (3/4) ... [2020-07-28 18:16:21,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:16:21,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 18:16:21,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 18:16:21,179 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:16:21,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:16:21,183 INFO L168 Benchmark]: Toolchain (without parser) took 1816.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -65.0 MB). Peak memory consumption was 76.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,184 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:16:21,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.16 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,186 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:16:21,187 INFO L168 Benchmark]: RCFGBuilder took 299.85 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,187 INFO L168 Benchmark]: TraceAbstraction took 1018.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,188 INFO L168 Benchmark]: Witness Printer took 68.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-28 18:16:21,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.16 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 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 103.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 299.85 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1018.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. * Witness Printer took 68.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 <= i && i + 1 <= nlen - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i + 1 <= nlen - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i + 1 <= nlen - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 16 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...