./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ef49038d2ab74dd97b86bf2af92359124ff338d3 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:23:28,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:23:28,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:23:28,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:23:28,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:23:28,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:23:28,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:23:28,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:23:28,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:23:28,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:23:28,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:23:28,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:23:28,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:23:28,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:23:28,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:23:28,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:23:28,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:23:28,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:23:28,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:23:28,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:23:28,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:23:28,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:23:28,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:23:28,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:23:28,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:23:28,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:23:28,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:23:28,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:23:28,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:23:28,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:23:28,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:23:28,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:23:28,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:23:28,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:23:28,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:23:28,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:23:28,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:23:28,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:23:28,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:23:28,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:23:28,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:23:28,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:23:28,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:23:28,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:23:28,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:23:28,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:23:28,326 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:23:28,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:23:28,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:23:28,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:23:28,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:23:28,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:23:28,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:23:28,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:23:28,328 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:23:28,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:23:28,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:23:28,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:23:28,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:23:28,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:23:28,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:23:28,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:23:28,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:23:28,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:23:28,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:23:28,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:23:28,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:23:28,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:23:28,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:23:28,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:23:28,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef49038d2ab74dd97b86bf2af92359124ff338d3 [2020-07-29 01:23:28,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:23:28,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:23:28,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:23:28,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:23:28,667 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:23:28,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2020-07-29 01:23:28,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fbb415a/aab861b2a3424929ad7d4990b265a88a/FLAG3e992615f [2020-07-29 01:23:29,171 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:23:29,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2020-07-29 01:23:29,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fbb415a/aab861b2a3424929ad7d4990b265a88a/FLAG3e992615f [2020-07-29 01:23:29,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fbb415a/aab861b2a3424929ad7d4990b265a88a [2020-07-29 01:23:29,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:23:29,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:23:29,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:29,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:23:29,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:23:29,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f68bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29, skipping insertion in model container [2020-07-29 01:23:29,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:23:29,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:23:29,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:29,793 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:23:29,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:29,834 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:23:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29 WrapperNode [2020-07-29 01:23:29,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:29,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:29,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:23:29,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:23:29,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:29,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:23:29,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:23:29,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:23:29,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (1/1) ... [2020-07-29 01:23:29,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:23:29,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:23:29,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:23:29,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:23:29,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (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 [2020-07-29 01:23:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:23:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:23:30,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:23:30,202 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:23:30,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:30 BoogieIcfgContainer [2020-07-29 01:23:30,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:23:30,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:23:30,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:23:30,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:23:30,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:23:29" (1/3) ... [2020-07-29 01:23:30,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d14d6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:30, skipping insertion in model container [2020-07-29 01:23:30,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:29" (2/3) ... [2020-07-29 01:23:30,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d14d6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:30, skipping insertion in model container [2020-07-29 01:23:30,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:30" (3/3) ... [2020-07-29 01:23:30,213 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2020-07-29 01:23:30,224 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:23:30,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-29 01:23:30,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-29 01:23:30,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:23:30,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:23:30,279 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:23:30,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:23:30,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:23:30,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:23:30,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:23:30,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:23:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-29 01:23:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-29 01:23:30,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:30,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-29 01:23:30,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-07-29 01:23:30,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:30,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302971597] [2020-07-29 01:23:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:23:30,524 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; {15#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:23:30,526 INFO L280 TraceCheckUtils]: 1: Hoare triple {15#(<= ULTIMATE.start_main_~x~0 2147483647)} assume !!((main_~x~0 > main_~y~0 && main_~y~0 >= 1) && main_~y~0 <= 2); {16#(<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483646))} is VALID [2020-07-29 01:23:30,527 INFO L280 TraceCheckUtils]: 2: Hoare triple {16#(<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483646))} assume !(main_~x~0 - main_~y~0 <= 2147483647); {14#false} is VALID [2020-07-29 01:23:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:23:30,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302971597] [2020-07-29 01:23:30,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:23:30,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:23:30,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385156514] [2020-07-29 01:23:30,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-07-29 01:23:30,538 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:23:30,541 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:23:30,556 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:30,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 01:23:30,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:23:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:23:30,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:23:30,567 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-07-29 01:23:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:30,669 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-29 01:23:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 01:23:30,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-07-29 01:23:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:23:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:23:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-07-29 01:23:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:23:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-07-29 01:23:30,678 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 14 transitions. [2020-07-29 01:23:30,702 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:30,711 INFO L225 Difference]: With dead ends: 14 [2020-07-29 01:23:30,712 INFO L226 Difference]: Without dead ends: 5 [2020-07-29 01:23:30,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:23:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2020-07-29 01:23:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-07-29 01:23:30,746 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:23:30,746 INFO L82 GeneralOperation]: Start isEquivalent. First operand 5 states. Second operand 5 states. [2020-07-29 01:23:30,747 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2020-07-29 01:23:30,747 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2020-07-29 01:23:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:30,749 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2020-07-29 01:23:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2020-07-29 01:23:30,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:30,750 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:30,750 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2020-07-29 01:23:30,750 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2020-07-29 01:23:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:30,751 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2020-07-29 01:23:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2020-07-29 01:23:30,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:30,752 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:30,752 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:23:30,753 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:23:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:23:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2020-07-29 01:23:30,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2020-07-29 01:23:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:23:30,755 INFO L479 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2020-07-29 01:23:30,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 01:23:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2020-07-29 01:23:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-29 01:23:30,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:30,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-29 01:23:30,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:23:30,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:30,757 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-07-29 01:23:30,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:30,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947863506] [2020-07-29 01:23:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:23:30,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:23:30,769 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:23:30,775 INFO L168 Benchmark]: Toolchain (without parser) took 1217.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -88.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:30,776 INFO L168 Benchmark]: CDTParser took 0.26 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. [2020-07-29 01:23:30,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:30,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.33 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:23:30,778 INFO L168 Benchmark]: Boogie Preprocessor took 75.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:30,779 INFO L168 Benchmark]: RCFGBuilder took 264.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:30,780 INFO L168 Benchmark]: TraceAbstraction took 565.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:30,784 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 0.26 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 277.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 27.33 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 264.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 565.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...