./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test13.c --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/ldv-regression/test13.c -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 22749f0c684d9d72525f8f3d1311c52d10bd60f7 ............................................................................................................................................................................................................................................................................................................. 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 17:58:31,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:31,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:31,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:31,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:31,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:31,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:32,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:32,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:32,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:32,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:32,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:32,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:32,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:32,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:32,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:32,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:32,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:32,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:32,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:32,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:32,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:32,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:32,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:32,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:32,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:32,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:32,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:32,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:32,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:32,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:32,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:32,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:32,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:32,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:32,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:32,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:32,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:32,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:32,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:32,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:32,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:32,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:32,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:32,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:32,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:32,099 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:32,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:32,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:32,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:32,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:32,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:32,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:32,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:32,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:32,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:32,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:32,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:32,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:32,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:32,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:32,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:32,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:32,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:32,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:32,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:32,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:32,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:32,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:32,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:32,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:32,109 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 -> 22749f0c684d9d72525f8f3d1311c52d10bd60f7 [2020-07-28 17:58:32,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:32,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:32,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:32,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:32,448 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:32,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test13.c [2020-07-28 17:58:32,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bceb894/0557a547a0df4a708209d200396c73b5/FLAG665b147d5 [2020-07-28 17:58:32,952 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:32,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test13.c [2020-07-28 17:58:32,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bceb894/0557a547a0df4a708209d200396c73b5/FLAG665b147d5 [2020-07-28 17:58:33,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bceb894/0557a547a0df4a708209d200396c73b5 [2020-07-28 17:58:33,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:33,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:33,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:33,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:33,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:33,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82c6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33, skipping insertion in model container [2020-07-28 17:58:33,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:33,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:33,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:33,600 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:33,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:33,641 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:33,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33 WrapperNode [2020-07-28 17:58:33,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:33,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:33,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:33,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:33,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:33,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:33,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:33,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:33,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:33,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:33,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:33,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:33,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (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 17:58:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:33,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-28 17:58:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:34,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:34,044 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:58:34,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34 BoogieIcfgContainer [2020-07-28 17:58:34,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:34,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:34,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:34,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:34,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:33" (1/3) ... [2020-07-28 17:58:34,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1a6258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (2/3) ... [2020-07-28 17:58:34,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1a6258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/3) ... [2020-07-28 17:58:34,057 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-07-28 17:58:34,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:34,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:34,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:34,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:34,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:34,129 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:34,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:34,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:34,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:34,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:34,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:58:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:58:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:34,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:58:34,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:34,167 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-07-28 17:58:34,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:34,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581374889] [2020-07-28 17:58:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:34,501 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4);~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset;~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {14#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-28 17:58:34,509 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} havoc main_#res;check_#in~a.base, check_#in~a.offset, check_#in~b.base, check_#in~b.offset := ~pa~0.base, ~pa~0.offset, ~#a~0.base, ~#a~0.offset;havoc check_~a.base, check_~a.offset, check_~b.base, check_~b.offset;check_~a.base, check_~a.offset := check_#in~a.base, check_#in~a.offset;check_~b.base, check_~b.offset := check_#in~b.base, check_#in~b.offset; {15#(and (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset))} is VALID [2020-07-28 17:58:34,513 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#(and (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset))} assume check_~a.base != check_~b.base || check_~a.offset != check_~b.offset; {13#false} is VALID [2020-07-28 17:58:34,513 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:58:34,516 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 17:58:34,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581374889] [2020-07-28 17:58:34,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:34,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:58:34,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562629093] [2020-07-28 17:58:34,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:58:34,529 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:34,533 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:58:34,549 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:58:34,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:34,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:58:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:58:34,563 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-07-28 17:58:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,646 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-28 17:58:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:58:34,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:58:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:58:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:58:34,656 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 12 transitions. [2020-07-28 17:58:34,680 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,688 INFO L225 Difference]: With dead ends: 13 [2020-07-28 17:58:34,688 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:58:34,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:58:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:58:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:58:34,718 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:34,719 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:34,719 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:34,720 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,721 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:34,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:34,722 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:34,722 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:34,723 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,723 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:34,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:34,724 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:34,724 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:34,725 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:58:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:58:34,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:58:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:34,728 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:58:34,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:58:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:34,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:34,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:34,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:58:34,794 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:58:34,794 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:58:34,794 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:58:34,794 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:58:34,794 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-28 17:58:34,795 INFO L264 CegarLoopResult]: At program point L19(lines 17 20) the Hoare annotation is: (and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (<= ~pa~0.offset 0) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset)) [2020-07-28 17:58:34,795 INFO L264 CegarLoopResult]: At program point L11(lines 4 12) the Hoare annotation is: (and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (= ULTIMATE.start_check_~a.base ULTIMATE.start_check_~b.base) (<= ~pa~0.offset 0) (= ULTIMATE.start_check_~b.offset ULTIMATE.start_check_~a.offset)) [2020-07-28 17:58:34,796 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: false [2020-07-28 17:58:34,796 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-28 17:58:34,800 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:34,801 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:34,801 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 17:58:34,801 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 17:58:34,801 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-28 17:58:34,803 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:34,803 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:34,803 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 17:58:34,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:34 BoogieIcfgContainer [2020-07-28 17:58:34,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:34,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:34,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:34,824 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:34,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/4) ... [2020-07-28 17:58:34,832 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:58:34,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:58:34,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:58:34,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:58:34,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:58:34,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:34,936 INFO L168 Benchmark]: Toolchain (without parser) took 1537.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -77.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:34,940 INFO L168 Benchmark]: CDTParser took 0.27 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 17:58:34,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.49 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:34,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:34,946 INFO L168 Benchmark]: Boogie Preprocessor took 18.51 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 17:58:34,950 INFO L168 Benchmark]: RCFGBuilder took 290.65 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:34,950 INFO L168 Benchmark]: TraceAbstraction took 772.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:34,959 INFO L168 Benchmark]: Witness Printer took 109.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:34,964 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 0.27 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 242.49 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 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 95.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.51 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 290.65 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 772.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 109.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((((0 == a && 0 <= pa) && pa == a) && a == b) && pa <= 0) && b == a - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0 == a && 0 <= pa) && pa == a) && a == b) && pa <= 0) && b == a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 39 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...