./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Cairo_nondet.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/Cairo_nondet.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 de94f0c7b8482738d507216e71ac3b33c5f9a9e3 .................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:49:53,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:49:53,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:49:53,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:49:53,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:49:53,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:49:53,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:49:53,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:49:53,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:49:53,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:49:53,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:49:53,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:49:53,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:49:53,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:49:53,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:49:53,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:49:53,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:49:53,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:49:53,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:49:53,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:49:53,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:49:53,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:49:53,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:49:53,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:49:53,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:49:53,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:49:53,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:49:53,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:49:53,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:49:53,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:49:53,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:49:53,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:49:53,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:49:53,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:49:53,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:49:53,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:49:53,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:49:53,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:49:53,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:49:53,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:49:53,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:49:53,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:49:53,225 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:49:53,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:49:53,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:49:53,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:49:53,232 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:49:53,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:49:53,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:49:53,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:49:53,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:49:53,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:49:53,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:49:53,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:49:53,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:49:53,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:49:53,236 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:49:53,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:49:53,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:49:53,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:49:53,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:49:53,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:49:53,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:49:53,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:49:53,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:49:53,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:49:53,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:49:53,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:49:53,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:49:53,240 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 -> de94f0c7b8482738d507216e71ac3b33c5f9a9e3 [2019-11-28 02:49:53,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:49:53,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:49:53,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:49:53,605 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:49:53,606 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:49:53,606 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2019-11-28 02:49:53,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddce1dd89/45b7b19450ba477bbe44badec5d4d2d9/FLAGb84b4c5df [2019-11-28 02:49:54,112 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:49:54,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2019-11-28 02:49:54,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddce1dd89/45b7b19450ba477bbe44badec5d4d2d9/FLAGb84b4c5df [2019-11-28 02:49:54,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddce1dd89/45b7b19450ba477bbe44badec5d4d2d9 [2019-11-28 02:49:54,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:49:54,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:49:54,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:49:54,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:49:54,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:49:54,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f7d783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54, skipping insertion in model container [2019-11-28 02:49:54,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:49:54,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:49:54,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:49:54,798 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:49:54,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:49:54,834 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:49:54,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54 WrapperNode [2019-11-28 02:49:54,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:49:54,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:49:54,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:49:54,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:49:54,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:49:54,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:49:54,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:49:54,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:49:54,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... [2019-11-28 02:49:54,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:49:54,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:49:54,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:49:54,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:49:54,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:49:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:49:55,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:49:55,155 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:49:55,156 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:49:55,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:55 BoogieIcfgContainer [2019-11-28 02:49:55,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:49:55,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:49:55,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:49:55,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:49:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:49:54" (1/3) ... [2019-11-28 02:49:55,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:55, skipping insertion in model container [2019-11-28 02:49:55,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:54" (2/3) ... [2019-11-28 02:49:55,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:55, skipping insertion in model container [2019-11-28 02:49:55,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:55" (3/3) ... [2019-11-28 02:49:55,164 INFO L109 eAbstractionObserver]: Analyzing ICFG Cairo_nondet.c [2019-11-28 02:49:55,172 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:49:55,176 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 02:49:55,189 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 02:49:55,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:49:55,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:49:55,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:49:55,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:49:55,216 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:49:55,216 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:49:55,217 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:49:55,217 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:49:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 02:49:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:49:55,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:49:55,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:49:55,241 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:49:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:49:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2019-11-28 02:49:55,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:49:55,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893951771] [2019-11-28 02:49:55,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:49:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:49:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:49:55,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893951771] [2019-11-28 02:49:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:49:55,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:49:55,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281293556] [2019-11-28 02:49:55,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:49:55,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:49:55,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:49:55,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:49:55,446 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-28 02:49:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:49:55,559 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-28 02:49:55,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:49:55,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 02:49:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:49:55,577 INFO L225 Difference]: With dead ends: 15 [2019-11-28 02:49:55,578 INFO L226 Difference]: Without dead ends: 6 [2019-11-28 02:49:55,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:49:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-28 02:49:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-28 02:49:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 02:49:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-28 02:49:55,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-28 02:49:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:49:55,641 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-28 02:49:55,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:49:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-28 02:49:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:49:55,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:49:55,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:49:55,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:49:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:49:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2019-11-28 02:49:55,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:49:55,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14329083] [2019-11-28 02:49:55,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:49:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:49:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:49:55,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14329083] [2019-11-28 02:49:55,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:49:55,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:49:55,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274141004] [2019-11-28 02:49:55,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:49:55,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:49:55,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:49:55,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:49:55,719 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2019-11-28 02:49:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:49:55,779 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-28 02:49:55,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:49:55,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 02:49:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:49:55,780 INFO L225 Difference]: With dead ends: 10 [2019-11-28 02:49:55,780 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 02:49:55,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:49:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 02:49:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 02:49:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 02:49:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 02:49:55,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-28 02:49:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:49:55,788 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 02:49:55,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:49:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 02:49:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:49:55,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:49:55,789 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-28 02:49:55,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:49:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:49:55,790 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2019-11-28 02:49:55,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:49:55,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940219112] [2019-11-28 02:49:55,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:49:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:49:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:49:55,860 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:49:55,860 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:49:55,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:49:55 BoogieIcfgContainer [2019-11-28 02:49:55,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:49:55,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:49:55,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:49:55,878 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:49:55,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:55" (3/4) ... [2019-11-28 02:49:55,881 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:49:55,918 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:49:55,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:49:55,921 INFO L168 Benchmark]: Toolchain (without parser) took 1391.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -110.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,921 INFO L168 Benchmark]: CDTParser took 1.59 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:49:55,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,924 INFO L168 Benchmark]: Boogie Preprocessor took 24.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:49:55,924 INFO L168 Benchmark]: RCFGBuilder took 200.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,925 INFO L168 Benchmark]: TraceAbstraction took 719.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,926 INFO L168 Benchmark]: Witness Printer took 40.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:49:55,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.59 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 94.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 719.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] x = __VERIFIER_nondet_int() [L15] COND TRUE x > __VERIFIER_nondet_int() [L16] COND TRUE x != 0 [L17] EXPR x - 1 [L17] x = x - 1 [L16] COND TRUE x != 0 [L17] x - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 1 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...