./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c 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/PodelskiRybalchenko-TACAS2011-Fig2.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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:46,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:46,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:46,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:46,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:46,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:46,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:46,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:46,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:46,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:46,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:46,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:46,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:46,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:46,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:46,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:46,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:46,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:46,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:46,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:46,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:46,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:46,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:46,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:46,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:46,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:46,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:46,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:46,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:46,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:46,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:46,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:46,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:46,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:46,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:46,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:46,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:46,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:46,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:46,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:46,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:46,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:46,239 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:46,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:46,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:46,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:46,241 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:46,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:46,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:46,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:46,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:46,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:46,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:46,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:46,243 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:46,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:46,244 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:46,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:46,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:46,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:46,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:46,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:46,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:46,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:46,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:46,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:46,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:46,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:46,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:46,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:46,248 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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2019-11-28 20:24:46,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:46,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:46,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:46,587 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:46,587 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:46,588 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-28 20:24:46,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef7f0026/f9fec9f662e548cb80639df8966086f2/FLAG227e67e0b [2019-11-28 20:24:47,079 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:47,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-28 20:24:47,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef7f0026/f9fec9f662e548cb80639df8966086f2/FLAG227e67e0b [2019-11-28 20:24:47,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef7f0026/f9fec9f662e548cb80639df8966086f2 [2019-11-28 20:24:47,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:47,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:47,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:47,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:47,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:47,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab6e674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47, skipping insertion in model container [2019-11-28 20:24:47,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:47,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:47,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:47,730 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:47,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:47,765 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:47,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47 WrapperNode [2019-11-28 20:24:47,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:47,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:47,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:47,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:47,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:47,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:47,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:47,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:47,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (1/1) ... [2019-11-28 20:24:47,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:47,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:47,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:47,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:47,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (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 20:24:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:48,082 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:48,083 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:24:48,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:48 BoogieIcfgContainer [2019-11-28 20:24:48,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:48,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:48,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:48,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:47" (1/3) ... [2019-11-28 20:24:48,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0d9178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:48, skipping insertion in model container [2019-11-28 20:24:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:47" (2/3) ... [2019-11-28 20:24:48,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0d9178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:48, skipping insertion in model container [2019-11-28 20:24:48,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:48" (3/3) ... [2019-11-28 20:24:48,092 INFO L109 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-28 20:24:48,101 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:48,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:24:48,121 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:24:48,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:48,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:48,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:48,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:48,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:48,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:48,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:48,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 20:24:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:48,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,208 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:48,209 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,216 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2019-11-28 20:24:48,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141469181] [2019-11-28 20:24:48,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,369 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 20:24:48,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141469181] [2019-11-28 20:24:48,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:48,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:48,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530645633] [2019-11-28 20:24:48,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:24:48,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:24:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:24:48,389 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-28 20:24:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,533 INFO L93 Difference]: Finished difference Result 48 states and 69 transitions. [2019-11-28 20:24:48,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:24:48,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 20:24:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,545 INFO L225 Difference]: With dead ends: 48 [2019-11-28 20:24:48,545 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 20:24:48,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 20:24:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-28 20:24:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 20:24:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-28 20:24:48,586 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 4 [2019-11-28 20:24:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,586 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-28 20:24:48,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:24:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-28 20:24:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:24:48,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:24:48,588 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,589 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2019-11-28 20:24:48,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893811798] [2019-11-28 20:24:48,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,610 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 20:24:48,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893811798] [2019-11-28 20:24:48,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:48,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:48,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472842593] [2019-11-28 20:24:48,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:48,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:48,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:48,614 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 3 states. [2019-11-28 20:24:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,629 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-11-28 20:24:48,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:48,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 20:24:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,631 INFO L225 Difference]: With dead ends: 19 [2019-11-28 20:24:48,631 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 20:24:48,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:24:48,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 20:24:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 20:24:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 20:24:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 20:24:48,638 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2019-11-28 20:24:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,638 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 20:24:48,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-28 20:24:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:24:48,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,639 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:24:48,640 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-28 20:24:48,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67388804] [2019-11-28 20:24:48,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,667 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 20:24:48,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67388804] [2019-11-28 20:24:48,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:48,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:48,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854988123] [2019-11-28 20:24:48,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:48,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:48,669 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-11-28 20:24:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,684 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-11-28 20:24:48,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:48,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 20:24:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,685 INFO L225 Difference]: With dead ends: 19 [2019-11-28 20:24:48,686 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 20:24:48,686 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:24:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 20:24:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-28 20:24:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:24:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-28 20:24:48,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2019-11-28 20:24:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,690 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-28 20:24:48,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-28 20:24:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:48,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:48,691 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2019-11-28 20:24:48,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236154617] [2019-11-28 20:24:48,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:48,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236154617] [2019-11-28 20:24:48,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:48,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:24:48,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118990147] [2019-11-28 20:24:48,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:48,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:48,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:48,726 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-11-28 20:24:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,743 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-28 20:24:48,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:48,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 20:24:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,745 INFO L225 Difference]: With dead ends: 11 [2019-11-28 20:24:48,745 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 20:24:48,747 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 20:24:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 20:24:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 20:24:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:24:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 20:24:48,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2019-11-28 20:24:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,753 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 20:24:48,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 20:24:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:48,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,754 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-28 20:24:48,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2019-11-28 20:24:48,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950283102] [2019-11-28 20:24:48,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:48,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950283102] [2019-11-28 20:24:48,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654010730] [2019-11-28 20:24:48,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:24:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:48,860 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:24:48,865 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 20:24:48,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114347593] [2019-11-28 20:24:48,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:24:48,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:24:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:24:48,889 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-28 20:24:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,938 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-28 20:24:48,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:24:48,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 20:24:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,940 INFO L225 Difference]: With dead ends: 18 [2019-11-28 20:24:48,940 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 20:24:48,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:24:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 20:24:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-11-28 20:24:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:24:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 20:24:48,947 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2019-11-28 20:24:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,947 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 20:24:48,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:24:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-28 20:24:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:24:48,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,949 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-28 20:24:49,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:49,155 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:49,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2000108501, now seen corresponding path program 2 times [2019-11-28 20:24:49,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:49,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14751204] [2019-11-28 20:24:49,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:49,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14751204] [2019-11-28 20:24:49,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926057919] [2019-11-28 20:24:49,207 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:49,232 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-28 20:24:49,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:49,233 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:24:49,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 20:24:49,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:49,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2019-11-28 20:24:49,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159158690] [2019-11-28 20:24:49,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:24:49,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:49,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:24:49,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:24:49,256 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2019-11-28 20:24:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:49,358 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-28 20:24:49,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:24:49,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-28 20:24:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:49,359 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:24:49,359 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:24:49,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:24:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:24:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:24:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:24:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:24:49,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-28 20:24:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:49,361 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:24:49,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:24:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:24:49,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:24:49,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:49,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:24:49,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:24:49,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:24:49,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L242 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:24:49,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:24:49,657 INFO L242 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 1) [2019-11-28 20:24:49,657 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 20:24:49,657 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-28 20:24:49,657 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-28 20:24:49,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:49 BoogieIcfgContainer [2019-11-28 20:24:49,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:49,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:49,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:49,674 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:49,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:48" (3/4) ... [2019-11-28 20:24:49,678 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:24:49,688 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:24:49,688 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 20:24:49,731 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:49,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:49,734 INFO L168 Benchmark]: Toolchain (without parser) took 2212.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -68.1 MB). Peak memory consumption was 75.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,734 INFO L168 Benchmark]: CDTParser took 0.17 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 20:24:49,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.47 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 20:24:49,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,736 INFO L168 Benchmark]: Boogie Preprocessor took 25.40 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,737 INFO L168 Benchmark]: RCFGBuilder took 208.41 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,738 INFO L168 Benchmark]: TraceAbstraction took 1588.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,738 INFO L168 Benchmark]: Witness Printer took 57.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:49,742 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 245.47 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 82.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.40 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.41 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1588.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 11.5 GB. * Witness Printer took 57.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 1 <= y) && 0 <= x - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 65 SDslu, 13 SDs, 0 SdLazy, 102 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 869 SizeOfPredicates, 1 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/19 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 correct! Received shutdown request...