./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c 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/AliasDarteFeautrierGonnord-SAS2010-ndecr.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 30650645c50d34fcfc42e8853470c3e29a63ab6d ........................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 20:23:17,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:23:17,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:23:17,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:23:17,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:23:17,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:23:17,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:23:17,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:23:17,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:23:17,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:23:17,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:23:17,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:23:17,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:23:17,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:23:17,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:23:17,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:23:17,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:23:17,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:23:17,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:23:17,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:23:17,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:23:17,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:23:17,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:23:17,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:23:17,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:23:17,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:23:17,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:23:17,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:23:17,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:23:17,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:23:17,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:23:17,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:23:17,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:23:17,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:23:17,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:23:17,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:23:17,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:23:17,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:23:17,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:23:17,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:23:17,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:23:17,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:23:17,086 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:23:17,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:23:17,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:23:17,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:23:17,089 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:23:17,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:23:17,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:23:17,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:23:17,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:23:17,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:23:17,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:23:17,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:23:17,091 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:23:17,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:23:17,092 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:23:17,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:23:17,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:23:17,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:23:17,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:23:17,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:23:17,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:23:17,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:23:17,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:23:17,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:23:17,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:23:17,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:23:17,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:23:17,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:23:17,096 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 -> 30650645c50d34fcfc42e8853470c3e29a63ab6d [2019-11-28 20:23:17,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:23:17,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:23:17,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:23:17,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:23:17,416 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:23:17,417 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2019-11-28 20:23:17,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5436fa989/2e9cc5964d1441d3b54ad9f90c2fc0d4/FLAG6b1cff620 [2019-11-28 20:23:17,942 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:23:17,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2019-11-28 20:23:17,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5436fa989/2e9cc5964d1441d3b54ad9f90c2fc0d4/FLAG6b1cff620 [2019-11-28 20:23:18,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5436fa989/2e9cc5964d1441d3b54ad9f90c2fc0d4 [2019-11-28 20:23:18,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:23:18,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:23:18,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:18,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:23:18,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:23:18,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1844f808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18, skipping insertion in model container [2019-11-28 20:23:18,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:23:18,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:23:18,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:18,617 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:23:18,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:18,641 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:23:18,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18 WrapperNode [2019-11-28 20:23:18,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:18,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:18,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:23:18,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:23:18,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:18,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:23:18,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:23:18,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:23:18,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (1/1) ... [2019-11-28 20:23:18,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:23:18,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:23:18,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:23:18,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:23:18,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (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 20:23:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:23:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:23:18,949 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:23:18,949 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:23:18,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:18 BoogieIcfgContainer [2019-11-28 20:23:18,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:23:18,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:23:18,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:23:18,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:23:18,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:23:18" (1/3) ... [2019-11-28 20:23:18,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efbb341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:18, skipping insertion in model container [2019-11-28 20:23:18,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:18" (2/3) ... [2019-11-28 20:23:18,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efbb341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:18, skipping insertion in model container [2019-11-28 20:23:18,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:18" (3/3) ... [2019-11-28 20:23:18,959 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2019-11-28 20:23:18,969 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:23:18,976 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:23:18,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:23:19,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:23:19,013 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:23:19,014 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:23:19,014 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:23:19,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:23:19,014 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:23:19,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:23:19,014 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:23:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 20:23:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-11-28 20:23:19,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:19,037 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-11-28 20:23:19,037 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:19,044 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2019-11-28 20:23:19,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:19,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700278440] [2019-11-28 20:23:19,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:19,183 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 20:23:19,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700278440] [2019-11-28 20:23:19,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:23:19,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:23:19,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223403961] [2019-11-28 20:23:19,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:23:19,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:23:19,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:23:19,210 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 20:23:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:19,240 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-28 20:23:19,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:23:19,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-11-28 20:23:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:19,250 INFO L225 Difference]: With dead ends: 18 [2019-11-28 20:23:19,250 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 20:23:19,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:23:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 20:23:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 20:23:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 20:23:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 20:23:19,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2019-11-28 20:23:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:19,286 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 20:23:19,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:23:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 20:23:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:23:19,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:19,287 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:23:19,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash 30849, now seen corresponding path program 1 times [2019-11-28 20:23:19,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:19,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917258376] [2019-11-28 20:23:19,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:19,321 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:23:19,321 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:23:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:23:19 BoogieIcfgContainer [2019-11-28 20:23:19,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:23:19,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:23:19,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:23:19,340 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:23:19,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:18" (3/4) ... [2019-11-28 20:23:19,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:23:19,379 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:23:19,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:23:19,382 INFO L168 Benchmark]: Toolchain (without parser) took 1009.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -135.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:19,383 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:19,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:19,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.67 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:19,385 INFO L168 Benchmark]: Boogie Preprocessor took 72.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:19,386 INFO L168 Benchmark]: RCFGBuilder took 208.03 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:19,387 INFO L168 Benchmark]: TraceAbstraction took 387.13 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:19,388 INFO L168 Benchmark]: Witness Printer took 39.56 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. [2019-11-28 20:23:19,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 27.67 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.03 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 387.13 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 39.56 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, n; [L15] n = __VERIFIER_nondet_int() [L16] n - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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...