./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.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 f299f7e43971e739d4799ece224b61839f7f06e4 ................................................................................................................................................................................................................................. 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 0.2.0-5485861 [2020-10-26 04:05:11,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:05:11,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:05:11,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:05:11,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:05:11,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:05:11,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:05:11,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:05:11,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:05:11,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:05:11,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:05:11,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:05:11,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:05:12,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:05:12,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:05:12,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:05:12,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:05:12,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:05:12,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:05:12,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:05:12,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:05:12,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:05:12,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:05:12,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:05:12,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:05:12,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:05:12,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:05:12,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:05:12,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:05:12,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:05:12,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:05:12,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:05:12,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:05:12,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:05:12,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:05:12,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:05:12,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:05:12,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:05:12,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:05:12,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:05:12,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:05:12,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:05:12,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:05:12,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:05:12,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:05:12,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:05:12,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:05:12,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:05:12,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:05:12,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:05:12,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:05:12,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:05:12,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:05:12,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:05:12,084 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:05:12,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:05:12,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:05:12,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:05:12,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:05:12,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:05:12,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:05:12,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:05:12,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:05:12,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:05:12,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:05:12,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:05:12,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:05:12,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:05:12,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:05:12,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:05:12,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f299f7e43971e739d4799ece224b61839f7f06e4 [2020-10-26 04:05:12,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:05:12,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:05:12,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:05:12,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:05:12,501 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:05:12,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2020-10-26 04:05:12,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67052ca67/ebcbbf7dc0104fdf81674e250c5e7794/FLAGe89ff5f26 [2020-10-26 04:05:13,132 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:05:13,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2020-10-26 04:05:13,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67052ca67/ebcbbf7dc0104fdf81674e250c5e7794/FLAGe89ff5f26 [2020-10-26 04:05:13,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67052ca67/ebcbbf7dc0104fdf81674e250c5e7794 [2020-10-26 04:05:13,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:05:13,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:05:13,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:05:13,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:05:13,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:05:13,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3be3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13, skipping insertion in model container [2020-10-26 04:05:13,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:05:13,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:05:13,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:05:13,704 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:05:13,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:05:13,731 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:05:13,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13 WrapperNode [2020-10-26 04:05:13,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:05:13,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:05:13,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:05:13,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:05:13,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:05:13,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:05:13,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:05:13,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:05:13,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (1/1) ... [2020-10-26 04:05:13,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:05:13,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:05:13,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:05:13,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:05:13,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (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 [2020-10-26 04:05:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:05:13,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:05:14,071 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:05:14,072 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:05:14,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:14 BoogieIcfgContainer [2020-10-26 04:05:14,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:05:14,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:05:14,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:05:14,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:05:14,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:05:13" (1/3) ... [2020-10-26 04:05:14,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d4afe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:05:14, skipping insertion in model container [2020-10-26 04:05:14,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:13" (2/3) ... [2020-10-26 04:05:14,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d4afe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:05:14, skipping insertion in model container [2020-10-26 04:05:14,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:14" (3/3) ... [2020-10-26 04:05:14,086 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2020-10-26 04:05:14,102 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:05:14,108 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:05:14,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:05:14,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:05:14,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:05:14,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:05:14,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:05:14,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:05:14,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:05:14,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:05:14,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:05:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-26 04:05:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-26 04:05:14,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:14,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-26 04:05:14,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:14,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:14,194 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-26 04:05:14,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:14,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315068813] [2020-10-26 04:05:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:05:14,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:05:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:05:14,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:05:14,357 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:05:14,358 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 04:05:14,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:05:14,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:05:14 BoogieIcfgContainer [2020-10-26 04:05:14,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:05:14,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:05:14,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:05:14,381 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:05:14,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:14" (3/4) ... [2020-10-26 04:05:14,385 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 04:05:14,426 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:05:14,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:05:14,430 INFO L168 Benchmark]: Toolchain (without parser) took 928.98 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 32.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 393.8 kB. Max. memory is 16.1 GB. [2020-10-26 04:05:14,431 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 44.0 MB. Free memory was 27.2 MB in the beginning and 27.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:14,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.99 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 21.8 MB in the end (delta: -959.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:14,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.21 ms. Allocated memory is still 44.0 MB. Free memory was 21.8 MB in the beginning and 20.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:14,434 INFO L168 Benchmark]: Boogie Preprocessor took 21.69 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 19.6 MB in the end (delta: 856.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:14,436 INFO L168 Benchmark]: RCFGBuilder took 284.69 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 31.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:14,437 INFO L168 Benchmark]: TraceAbstraction took 302.75 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 34.3 MB in the end (delta: -3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:14,438 INFO L168 Benchmark]: Witness Printer took 46.76 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 32.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:14,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 44.0 MB. Free memory was 27.2 MB in the beginning and 27.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.99 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 21.8 MB in the end (delta: -959.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.21 ms. Allocated memory is still 44.0 MB. Free memory was 21.8 MB in the beginning and 20.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.69 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 19.6 MB in the end (delta: 856.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.69 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 31.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 302.75 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 34.3 MB in the end (delta: -3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 46.76 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 32.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, oldx; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < 5 [L27] oldx = x [L28] oldx - y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...