./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.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 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 ............................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:51:26,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:51:26,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:51:26,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:51:26,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:51:26,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:51:26,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:51:26,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:51:26,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:51:26,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:51:26,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:51:26,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:51:26,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:51:26,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:51:26,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:51:26,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:51:26,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:51:26,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:51:26,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:51:26,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:51:26,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:51:26,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:51:26,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:51:26,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:51:26,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:51:26,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:51:26,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:51:26,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:51:26,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:51:26,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:51:26,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:51:26,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:51:26,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:51:26,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:51:26,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:51:26,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:51:26,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:51:26,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:51:26,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:51:26,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:51:26,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:51:26,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:51:26,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:51:26,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:51:26,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:51:26,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:51:26,540 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:51:26,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:51:26,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:51:26,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:51:26,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:51:26,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:51:26,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:51:26,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:51:26,543 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:51:26,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:51:26,544 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:51:26,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:51:26,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:51:26,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:51:26,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:51:26,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:51:26,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:51:26,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:51:26,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:51:26,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:51:26,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:51:26,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:51:26,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:51:26,547 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 -> 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 [2019-11-28 02:51:26,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:51:26,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:51:26,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:51:26,870 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:51:26,870 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:51:26,871 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-28 02:51:26,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f8ec363/e6209fd92e274d43859359d1747419d0/FLAG96d7330fd [2019-11-28 02:51:27,369 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:51:27,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-28 02:51:27,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f8ec363/e6209fd92e274d43859359d1747419d0/FLAG96d7330fd [2019-11-28 02:51:27,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f8ec363/e6209fd92e274d43859359d1747419d0 [2019-11-28 02:51:27,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:51:27,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:51:27,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:51:27,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:51:27,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:51:27,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:27,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19255d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27, skipping insertion in model container [2019-11-28 02:51:27,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:27,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:51:27,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:51:27,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:51:27,958 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:51:27,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:51:27,988 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:51:27,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27 WrapperNode [2019-11-28 02:51:27,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:51:27,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:51:27,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:51:27,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:51:27,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:51:28,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:51:28,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:51:28,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:51:28,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... [2019-11-28 02:51:28,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:51:28,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:51:28,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:51:28,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:51:28,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:51:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:51:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:51:28,330 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:51:28,330 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:51:28,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:28 BoogieIcfgContainer [2019-11-28 02:51:28,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:51:28,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:51:28,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:51:28,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:51:28,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:51:27" (1/3) ... [2019-11-28 02:51:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31afcbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:28, skipping insertion in model container [2019-11-28 02:51:28,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:27" (2/3) ... [2019-11-28 02:51:28,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31afcbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:28, skipping insertion in model container [2019-11-28 02:51:28,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:28" (3/3) ... [2019-11-28 02:51:28,340 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-28 02:51:28,348 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:51:28,353 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 02:51:28,365 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 02:51:28,391 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:51:28,391 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:51:28,391 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:51:28,392 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:51:28,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:51:28,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:51:28,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:51:28,393 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:51:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 02:51:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:51:28,413 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:28,414 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:51:28,415 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2019-11-28 02:51:28,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:28,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339444560] [2019-11-28 02:51:28,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:51:28,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339444560] [2019-11-28 02:51:28,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:28,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:51:28,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066658901] [2019-11-28 02:51:28,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:51:28,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:51:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:51:28,726 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-28 02:51:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:28,829 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-28 02:51:28,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:51:28,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 02:51:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:28,845 INFO L225 Difference]: With dead ends: 21 [2019-11-28 02:51:28,845 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 02:51:28,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:51:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 02:51:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-28 02:51:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:51:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-28 02:51:28,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2019-11-28 02:51:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:28,895 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-28 02:51:28,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:51:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-11-28 02:51:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:51:28,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:28,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:51:28,899 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash 29740420, now seen corresponding path program 1 times [2019-11-28 02:51:28,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:28,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081787946] [2019-11-28 02:51:28,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:51:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:51:28,939 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:51:28,939 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:51:28,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:51:28 BoogieIcfgContainer [2019-11-28 02:51:28,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:51:28,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:51:28,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:51:28,959 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:51:28,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:28" (3/4) ... [2019-11-28 02:51:28,962 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:51:28,996 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:51:28,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:51:28,999 INFO L168 Benchmark]: Toolchain (without parser) took 1223.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -114.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,000 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:51:29,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,003 INFO L168 Benchmark]: Boogie Preprocessor took 27.35 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,003 INFO L168 Benchmark]: RCFGBuilder took 222.31 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: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,004 INFO L168 Benchmark]: TraceAbstraction took 625.75 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:29,005 INFO L168 Benchmark]: Witness Printer took 37.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:51:29,009 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.35 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 222.31 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: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 625.75 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * Witness Printer took 37.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx [L26] -2*x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...