./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.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-lit/LeeJonesBen-Amram-POPL2001-Ex2.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 f1df70d37f8afdd882c0c58eaed03ed11e314407 ............................................................................................................................................................................................................................................................................................................. 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 02:52:01,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:52:01,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:52:01,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:52:01,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:52:01,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:52:01,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:52:01,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:52:01,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:52:01,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:52:01,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:52:01,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:52:01,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:52:01,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:52:01,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:52:01,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:52:01,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:52:01,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:52:01,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:52:01,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:52:01,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:52:01,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:52:01,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:52:01,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:52:01,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:52:01,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:52:01,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:52:01,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:52:01,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:52:01,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:52:01,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:52:01,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:52:01,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:52:01,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:52:01,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:52:01,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:52:01,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:52:01,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:52:01,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:52:01,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:52:01,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:52:01,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:52:01,181 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:52:01,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:52:01,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:52:01,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:52:01,184 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:52:01,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:52:01,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:52:01,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:52:01,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:52:01,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:52:01,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:52:01,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:52:01,186 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:52:01,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:52:01,187 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:52:01,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:52:01,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:52:01,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:52:01,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:52:01,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:52:01,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:52:01,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:52:01,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:52:01,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:52:01,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:52:01,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:52:01,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:52:01,190 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 -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2019-11-28 02:52:01,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:52:01,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:52:01,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:52:01,529 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:52:01,530 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:52:01,531 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-28 02:52:01,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a141a802f/2bf10e98938945aa84317977fef9e66d/FLAG3d9ca8669 [2019-11-28 02:52:02,047 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:52:02,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-28 02:52:02,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a141a802f/2bf10e98938945aa84317977fef9e66d/FLAG3d9ca8669 [2019-11-28 02:52:02,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a141a802f/2bf10e98938945aa84317977fef9e66d [2019-11-28 02:52:02,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:52:02,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:52:02,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:02,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:52:02,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:52:02,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177923f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02, skipping insertion in model container [2019-11-28 02:52:02,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:52:02,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:52:02,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:02,757 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:52:02,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:02,797 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:52:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02 WrapperNode [2019-11-28 02:52:02,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:02,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:02,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:52:02,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:52:02,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:02,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:52:02,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:52:02,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:52:02,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (1/1) ... [2019-11-28 02:52:02,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:52:02,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:52:02,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:52:02,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:52:02,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (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 [2019-11-28 02:52:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-28 02:52:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-28 02:52:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-28 02:52:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-28 02:52:02,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:52:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:52:03,243 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:52:03,244 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:52:03,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:03 BoogieIcfgContainer [2019-11-28 02:52:03,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:52:03,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:52:03,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:52:03,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:52:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:02" (1/3) ... [2019-11-28 02:52:03,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4897c3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:03, skipping insertion in model container [2019-11-28 02:52:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:02" (2/3) ... [2019-11-28 02:52:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4897c3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:03, skipping insertion in model container [2019-11-28 02:52:03,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:03" (3/3) ... [2019-11-28 02:52:03,268 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-28 02:52:03,292 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:52:03,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:52:03,328 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:52:03,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:52:03,357 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:52:03,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:52:03,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:52:03,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:52:03,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:52:03,358 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:52:03,358 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:52:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-28 02:52:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:52:03,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:03,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:52:03,388 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2019-11-28 02:52:03,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:03,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892766023] [2019-11-28 02:52:03,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:03,584 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 02:52:03,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892766023] [2019-11-28 02:52:03,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:03,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:52:03,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095761681] [2019-11-28 02:52:03,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:52:03,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:52:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:52:03,603 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-11-28 02:52:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:03,721 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-28 02:52:03,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:52:03,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-28 02:52:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:03,735 INFO L225 Difference]: With dead ends: 39 [2019-11-28 02:52:03,735 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 02:52:03,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:52:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 02:52:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-28 02:52:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 02:52:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-28 02:52:03,775 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2019-11-28 02:52:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:03,776 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-28 02:52:03,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:52:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-28 02:52:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:52:03,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:03,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:03,777 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:03,778 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2019-11-28 02:52:03,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:03,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834651173] [2019-11-28 02:52:03,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:03,826 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 02:52:03,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834651173] [2019-11-28 02:52:03,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:03,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:52:03,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696241138] [2019-11-28 02:52:03,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:52:03,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:52:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:52:03,831 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2019-11-28 02:52:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:03,897 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-28 02:52:03,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:52:03,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 02:52:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:03,899 INFO L225 Difference]: With dead ends: 22 [2019-11-28 02:52:03,899 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 02:52:03,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:52:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 02:52:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-28 02:52:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 02:52:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-28 02:52:03,909 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2019-11-28 02:52:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:03,909 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-28 02:52:03,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:52:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-28 02:52:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:52:03,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:03,912 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:03,912 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2019-11-28 02:52:03,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:03,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780231889] [2019-11-28 02:52:03,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:52:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:52:04,011 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:52:04,011 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:52:04,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:52:04 BoogieIcfgContainer [2019-11-28 02:52:04,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:52:04,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:52:04,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:52:04,049 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:52:04,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:03" (3/4) ... [2019-11-28 02:52:04,053 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:52:04,119 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:52:04,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:52:04,126 INFO L168 Benchmark]: Toolchain (without parser) took 1655.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -70.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:04,127 INFO L168 Benchmark]: CDTParser took 0.28 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 02:52:04,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.19 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:04,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.89 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:04,129 INFO L168 Benchmark]: Boogie Preprocessor took 82.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:04,130 INFO L168 Benchmark]: RCFGBuilder took 321.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:04,130 INFO L168 Benchmark]: TraceAbstraction took 794.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:04,131 INFO L168 Benchmark]: Witness Printer took 75.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:04,135 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 327.19 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.89 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 794.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. * Witness Printer took 75.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=2147483647, \old(x)=1] [L18] COND FALSE !(i==0) VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] EXPR i-1 VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] CALL g(i-1,x,i) VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647] [L26] b+c VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647, a=2147483646, b=1, c=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 25 SDslu, 91 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 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...