./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 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-counterex1a.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 cf525d8633b3b7346e37d1ca80a1eb5813bdc12a .................................................................................................................................................................................................................................................................... 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 0.1.25-906a4fb [2020-10-19 18:30:03,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:30:03,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:30:04,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:30:04,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:30:04,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:30:04,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:30:04,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:30:04,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:30:04,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:30:04,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:30:04,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:30:04,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:30:04,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:30:04,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:30:04,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:30:04,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:30:04,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:30:04,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:30:04,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:30:04,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:30:04,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:30:04,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:30:04,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:30:04,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:30:04,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:30:04,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:30:04,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:30:04,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:30:04,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:30:04,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:30:04,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:30:04,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:30:04,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:30:04,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:30:04,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:30:04,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:30:04,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:30:04,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:30:04,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:30:04,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:30:04,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:30:04,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:30:04,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:30:04,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:30:04,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:30:04,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:30:04,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:30:04,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:30:04,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:30:04,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:30:04,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:30:04,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:30:04,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:30:04,090 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:30:04,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:30:04,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:30:04,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:30:04,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:30:04,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:30:04,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:30:04,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:30:04,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:30:04,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:30:04,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:30:04,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:30:04,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:30:04,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:30:04,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:30:04,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:30:04,094 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 -> cf525d8633b3b7346e37d1ca80a1eb5813bdc12a [2020-10-19 18:30:04,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:30:04,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:30:04,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:30:04,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:30:04,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:30:04,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1a.c [2020-10-19 18:30:04,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b712db8/74ac3a67bf8542c994f725ed16057ff4/FLAG52073b9a9 [2020-10-19 18:30:05,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:30:05,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1a.c [2020-10-19 18:30:05,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b712db8/74ac3a67bf8542c994f725ed16057ff4/FLAG52073b9a9 [2020-10-19 18:30:05,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b712db8/74ac3a67bf8542c994f725ed16057ff4 [2020-10-19 18:30:05,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:30:05,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:30:05,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:05,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:30:05,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:30:05,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6a6f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05, skipping insertion in model container [2020-10-19 18:30:05,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:30:05,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:30:05,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:05,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:30:05,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:05,693 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:30:05,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05 WrapperNode [2020-10-19 18:30:05,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:05,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:05,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:30:05,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:30:05,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:05,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:30:05,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:30:05,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:30:05,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (1/1) ... [2020-10-19 18:30:05,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:30:05,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:30:05,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:30:05,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:30:05,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (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 [2020-10-19 18:30:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:30:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:30:06,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:30:06,082 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:30:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:06 BoogieIcfgContainer [2020-10-19 18:30:06,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:30:06,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:30:06,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:30:06,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:30:06,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:30:05" (1/3) ... [2020-10-19 18:30:06,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7467f15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:06, skipping insertion in model container [2020-10-19 18:30:06,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:05" (2/3) ... [2020-10-19 18:30:06,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7467f15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:06, skipping insertion in model container [2020-10-19 18:30:06,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:06" (3/3) ... [2020-10-19 18:30:06,109 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1a.c [2020-10-19 18:30:06,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:30:06,150 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 18:30:06,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 18:30:06,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:30:06,225 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:30:06,226 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:30:06,226 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:30:06,226 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:30:06,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:30:06,226 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:30:06,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:30:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-19 18:30:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:30:06,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:06,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:30:06,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:06,259 INFO L82 PathProgramCache]: Analyzing trace with hash 963723, now seen corresponding path program 1 times [2020-10-19 18:30:06,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:06,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288675687] [2020-10-19 18:30:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:06,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288675687] [2020-10-19 18:30:06,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:06,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:30:06,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358865589] [2020-10-19 18:30:06,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:06,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:06,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:06,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:06,438 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-10-19 18:30:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:06,511 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-19 18:30:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:06,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:30:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:06,524 INFO L225 Difference]: With dead ends: 41 [2020-10-19 18:30:06,524 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:30:06,528 INFO L677 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 [2020-10-19 18:30:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:30:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-19 18:30:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:30:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2020-10-19 18:30:06,570 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 4 [2020-10-19 18:30:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:06,571 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2020-10-19 18:30:06,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2020-10-19 18:30:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:30:06,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:06,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:30:06,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:30:06,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:06,574 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-10-19 18:30:06,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:06,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420623319] [2020-10-19 18:30:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:30:06,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:30:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:30:06,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:30:06,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:30:06,622 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:30:06,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:30:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:30:06 BoogieIcfgContainer [2020-10-19 18:30:06,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:30:06,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:30:06,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:30:06,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:30:06,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:06" (3/4) ... [2020-10-19 18:30:06,643 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:30:06,687 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:30:06,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:30:06,690 INFO L168 Benchmark]: Toolchain (without parser) took 1250.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 960.0 MB in the beginning and 1.0 GB in the end (delta: -62.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,691 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:06,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,694 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,695 INFO L168 Benchmark]: RCFGBuilder took 274.18 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,696 INFO L168 Benchmark]: TraceAbstraction took 553.24 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,697 INFO L168 Benchmark]: Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:06,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 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 94.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.87 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 274.18 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 553.24 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 21]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n, b; [L15] n = __VERIFIER_nondet_int() [L16] b = __VERIFIER_nondet_int() [L17] x = __VERIFIER_nondet_int() [L18] y = __VERIFIER_nondet_int() [L19] COND TRUE x >= 0 && 0 <= y && y <= n [L20] COND TRUE b == 0 [L21] y + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 16 SDslu, 13 SDs, 0 SdLazy, 16 SolverSat, 3 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=24occurred in iteration=1, 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...