./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d 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_1.3.100.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/Lobnya-Boolean-Reordered-1.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 a3bc8586d8722f62f6c29c16aaad29e5c9f97f34 .................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 06:22:01,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:01,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:01,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:01,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:01,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:01,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:01,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:01,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:01,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:01,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:01,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:01,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:01,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:01,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:01,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:01,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:01,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:01,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:01,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:01,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:01,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:01,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:01,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:01,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:01,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:01,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:01,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:01,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:01,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:01,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:01,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:01,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:01,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:01,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:01,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:01,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:01,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:01,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:01,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:01,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:01,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:01,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:01,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:01,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:01,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:01,267 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:01,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:01,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:01,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:01,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:01,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:01,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:01,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:01,270 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:01,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:01,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:01,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:01,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:01,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:01,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:01,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:01,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:01,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:01,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:01,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:01,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:01,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:01,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:01,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:01,274 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 -> a3bc8586d8722f62f6c29c16aaad29e5c9f97f34 [2020-10-20 06:22:01,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:01,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:01,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:01,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:01,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:01,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-1.c [2020-10-20 06:22:01,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15111bf2/eaa6be1c78974fbda831822965d8a313/FLAG474973495 [2020-10-20 06:22:02,139 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:02,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-1.c [2020-10-20 06:22:02,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15111bf2/eaa6be1c78974fbda831822965d8a313/FLAG474973495 [2020-10-20 06:22:02,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15111bf2/eaa6be1c78974fbda831822965d8a313 [2020-10-20 06:22:02,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:02,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:02,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:02,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:02,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:02,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182bd128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02, skipping insertion in model container [2020-10-20 06:22:02,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:02,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:02,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:02,739 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:02,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:02,763 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:02,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02 WrapperNode [2020-10-20 06:22:02,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:02,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:02,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:02,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:02,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:02,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:02,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:02,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:02,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (1/1) ... [2020-10-20 06:22:02,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:02,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:02,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:02,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:02,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (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 [2020-10-20 06:22:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:03,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:03,040 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:22:03,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03 BoogieIcfgContainer [2020-10-20 06:22:03,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:03,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:03,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:03,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:02" (1/3) ... [2020-10-20 06:22:03,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afeb0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:03, skipping insertion in model container [2020-10-20 06:22:03,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:02" (2/3) ... [2020-10-20 06:22:03,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afeb0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:03, skipping insertion in model container [2020-10-20 06:22:03,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03" (3/3) ... [2020-10-20 06:22:03,051 INFO L111 eAbstractionObserver]: Analyzing ICFG Lobnya-Boolean-Reordered-1.c [2020-10-20 06:22:03,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:03,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 06:22:03,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 06:22:03,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:03,111 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:03,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:03,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:03,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:03,112 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:03,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:03,112 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 06:22:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:22:03,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:03,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:22:03,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:22:03,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:03,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548530050] [2020-10-20 06:22:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:03,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548530050] [2020-10-20 06:22:03,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:03,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:22:03,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190788330] [2020-10-20 06:22:03,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:03,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:03,329 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-10-20 06:22:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:03,369 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-10-20 06:22:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:03,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-20 06:22:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:03,388 INFO L225 Difference]: With dead ends: 15 [2020-10-20 06:22:03,388 INFO L226 Difference]: Without dead ends: 6 [2020-10-20 06:22:03,394 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 [2020-10-20 06:22:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-10-20 06:22:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-20 06:22:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:22:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2020-10-20 06:22:03,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3 [2020-10-20 06:22:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:03,440 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-10-20 06:22:03,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2020-10-20 06:22:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:22:03,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:03,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:22:03,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:03,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-20 06:22:03,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:03,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930767692] [2020-10-20 06:22:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:03,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:03,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:03,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:22:03,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:22:03,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:22:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:03 BoogieIcfgContainer [2020-10-20 06:22:03,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:03,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:03,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:03,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:03,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03" (3/4) ... [2020-10-20 06:22:03,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:22:03,554 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:03,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:03,557 INFO L168 Benchmark]: Toolchain (without parser) took 1053.76 ms. Allocated memory was 40.4 MB in the beginning and 45.1 MB in the end (delta: 4.7 MB). Free memory was 17.1 MB in the beginning and 24.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,558 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 30.9 MB. Free memory was 16.8 MB in the beginning and 16.7 MB in the end (delta: 28.5 kB). Peak memory consumption was 28.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.36 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.2 MB in the beginning and 15.8 MB in the end (delta: 362.7 kB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.43 ms. Allocated memory is still 40.9 MB. Free memory was 15.8 MB in the beginning and 14.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,561 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 40.9 MB. Free memory was 14.4 MB in the beginning and 13.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,562 INFO L168 Benchmark]: RCFGBuilder took 230.77 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.2 MB in the beginning and 19.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,563 INFO L168 Benchmark]: TraceAbstraction took 461.26 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 18.6 MB in the beginning and 9.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,564 INFO L168 Benchmark]: Witness Printer took 50.33 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 9.5 MB in the beginning and 24.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:03,571 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 30.9 MB. Free memory was 16.8 MB in the beginning and 16.7 MB in the end (delta: 28.5 kB). Peak memory consumption was 28.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 254.36 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.2 MB in the beginning and 15.8 MB in the end (delta: 362.7 kB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 27.43 ms. Allocated memory is still 40.9 MB. Free memory was 15.8 MB in the beginning and 14.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 40.9 MB. Free memory was 14.4 MB in the beginning and 13.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 230.77 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.2 MB in the beginning and 19.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 461.26 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 18.6 MB in the beginning and 9.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Witness Printer took 50.33 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 9.5 MB in the beginning and 24.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, b; [L16] x = __VERIFIER_nondet_int() [L17] b = __VERIFIER_nondet_int() [L18] COND TRUE b != 0 [L19] b = __VERIFIER_nondet_int() [L20] x - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 1 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=11occurred 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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...