./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/nla-digbench/fermat2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1180ef32ce1b05b04d6987a02d3d281282e8367d ............................................................................................................................................................................................................................................................................................................................................................................. 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 17:11:16,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:11:16,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:11:16,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:11:16,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:11:16,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:11:16,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:11:16,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:11:16,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:11:16,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:11:16,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:11:16,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:11:16,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:11:16,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:11:16,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:11:16,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:11:16,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:11:16,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:11:16,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:11:16,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:11:16,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:11:16,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:11:16,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:11:16,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:11:16,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:11:16,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:11:16,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:11:16,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:11:16,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:11:16,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:11:16,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:11:16,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:11:16,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:11:16,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:11:16,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:11:16,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:11:16,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:11:16,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:11:16,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:11:16,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:11:16,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:11:16,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:11:16,311 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:11:16,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:11:16,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:11:16,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:11:16,314 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:11:16,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:11:16,315 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:11:16,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:11:16,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:11:16,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:11:16,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:11:16,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:11:16,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:11:16,318 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:11:16,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:11:16,318 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:11:16,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:11:16,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:11:16,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:11:16,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:11:16,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:11:16,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:11:16,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:11:16,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:11:16,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:11:16,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:11:16,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:11:16,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:11:16,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:11:16,322 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1180ef32ce1b05b04d6987a02d3d281282e8367d [2019-11-28 17:11:16,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:11:16,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:11:16,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:11:16,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:11:16,652 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:11:16,653 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat2.c [2019-11-28 17:11:16,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a78c1c0/aa5db591a43e44bfb863113809a52424/FLAGbc91067a0 [2019-11-28 17:11:17,224 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:11:17,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2.c [2019-11-28 17:11:17,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a78c1c0/aa5db591a43e44bfb863113809a52424/FLAGbc91067a0 [2019-11-28 17:11:17,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a78c1c0/aa5db591a43e44bfb863113809a52424 [2019-11-28 17:11:17,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:11:17,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:11:17,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:11:17,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:11:17,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:11:17,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717ede78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17, skipping insertion in model container [2019-11-28 17:11:17,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:11:17,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:11:17,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:11:17,813 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:11:17,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:11:17,863 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:11:17,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17 WrapperNode [2019-11-28 17:11:17,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:11:17,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:11:17,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:11:17,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:11:17,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:11:17,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:11:17,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:11:17,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:11:17,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (1/1) ... [2019-11-28 17:11:17,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:11:17,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:11:17,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:11:17,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:11:17,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (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 17:11:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:11:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:11:18,225 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:11:18,225 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 17:11:18,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:11:18 BoogieIcfgContainer [2019-11-28 17:11:18,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:11:18,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:11:18,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:11:18,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:11:18,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:11:17" (1/3) ... [2019-11-28 17:11:18,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3a272e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:11:18, skipping insertion in model container [2019-11-28 17:11:18,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:11:17" (2/3) ... [2019-11-28 17:11:18,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3a272e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:11:18, skipping insertion in model container [2019-11-28 17:11:18,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:11:18" (3/3) ... [2019-11-28 17:11:18,242 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-11-28 17:11:18,259 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:11:18,270 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 17:11:18,287 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 17:11:18,317 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:11:18,317 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:11:18,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:11:18,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:11:18,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:11:18,319 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:11:18,319 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:11:18,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:11:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 17:11:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 17:11:18,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:11:18,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 17:11:18,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:11:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:11:18,350 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 17:11:18,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:11:18,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395610095] [2019-11-28 17:11:18,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:11:18,425 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 17:11:18,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576031086] [2019-11-28 17:11:18,426 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:11:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:11:18,461 WARN L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 17:11:18,466 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:11:18,622 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-11-28 17:11:18,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:11:19,269 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 17:11:19,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395610095] [2019-11-28 17:11:19,270 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 17:11:19,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576031086] [2019-11-28 17:11:19,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:11:19,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:11:19,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972444698] [2019-11-28 17:11:19,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:11:19,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:11:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:11:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:11:19,297 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-28 17:11:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:11:21,525 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2019-11-28 17:11:21,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:11:21,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 17:11:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:11:21,539 INFO L225 Difference]: With dead ends: 42 [2019-11-28 17:11:21,540 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 17:11:21,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:11:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 17:11:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-28 17:11:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 17:11:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 17:11:21,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-28 17:11:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:11:21,595 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 17:11:21,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:11:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 17:11:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:11:21,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:11:21,596 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:11:21,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:11:21,798 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:11:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:11:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1361018346, now seen corresponding path program 1 times [2019-11-28 17:11:21,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:11:21,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026021194] [2019-11-28 17:11:21,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:11:21,804 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 17:11:21,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167852358] [2019-11-28 17:11:21,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2019-11-28 17:11:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:11:21,842 WARN L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 17:11:21,844 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:11:25,956 WARN L192 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 30 [2019-11-28 17:11:25,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:11:26,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:11:26,071 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 17:11:26,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026021194] [2019-11-28 17:11:26,072 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 17:11:26,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167852358] [2019-11-28 17:11:26,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:11:26,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 17:11:26,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904465343] [2019-11-28 17:11:26,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:11:26,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:11:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:11:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:11:26,075 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2019-11-28 17:11:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:11:26,280 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-28 17:11:26,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:11:26,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2019-11-28 17:11:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:11:26,282 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:11:26,282 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:11:26,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:11:26,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:11:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:11:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:11:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:11:26,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-28 17:11:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:11:26,285 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:11:26,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:11:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:11:26,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:11:26,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:11:26,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:11:32,107 WARN L192 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-11-28 17:11:32,110 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:11:32,110 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 17:11:32,110 INFO L246 CegarLoopResult]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-28 17:11:32,111 INFO L242 CegarLoopResult]: At program point L7-2(line 30) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~R~0 Int)) (< (let ((.cse0 (+ ULTIMATE.start_main_~R~0 (- 1)))) (* .cse0 .cse0)) ULTIMATE.start_main_~A~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* 4 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)) (+ (* 2 ULTIMATE.start_main_~v~0) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)))) [2019-11-28 17:11:32,111 INFO L246 CegarLoopResult]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-28 17:11:32,111 INFO L249 CegarLoopResult]: At program point L7-5(lines 6 12) the Hoare annotation is: true [2019-11-28 17:11:32,112 INFO L246 CegarLoopResult]: For program point L32(lines 32 38) no Hoare annotation was computed. [2019-11-28 17:11:32,113 INFO L242 CegarLoopResult]: At program point L32-2(lines 28 39) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)) (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0))))) (or (let ((.cse2 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (and .cse0 (= 1 (mod ULTIMATE.start_main_~A~0 2)) (< (let ((.cse1 (+ .cse2 (- 1)))) (* .cse1 .cse1)) ULTIMATE.start_main_~A~0) (= ULTIMATE.start_main_~v~0 1) (= (* .cse2 .cse2) (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)))) (and (exists ((ULTIMATE.start_main_~R~0 Int)) (< (let ((.cse3 (+ ULTIMATE.start_main_~R~0 (- 1)))) (* .cse3 .cse3)) ULTIMATE.start_main_~A~0)) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)))) [2019-11-28 17:11:32,113 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:11:32,114 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:11:32,114 INFO L246 CegarLoopResult]: For program point L28-2(lines 28 39) no Hoare annotation was computed. [2019-11-28 17:11:32,114 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 17:11:32,121 INFO L249 CegarLoopResult]: At program point L43(lines 14 44) the Hoare annotation is: true [2019-11-28 17:11:32,122 INFO L246 CegarLoopResult]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-28 17:11:32,122 INFO L246 CegarLoopResult]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-28 17:11:32,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:11:32 BoogieIcfgContainer [2019-11-28 17:11:32,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:11:32,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:11:32,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:11:32,175 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:11:32,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:11:18" (3/4) ... [2019-11-28 17:11:32,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:11:32,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 17:11:32,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:11:32,216 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((u * 2 + A * 4 + r * 4 + v * v == v * 2 + u * u && 1 == A % 2) && ((u * -1 + 1) / -2 + -1) * ((u * -1 + 1) / -2 + -1) < A) && v == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == A + r) || (((\exists ULTIMATE.start_main_~R~0 : int :: (ULTIMATE.start_main_~R~0 + -1) * (ULTIMATE.start_main_~R~0 + -1) < A) && u * 2 + A * 4 + r * 4 + v * v == v * 2 + u * u) && 1 == cond) [2019-11-28 17:11:32,217 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~R~0 : int :: (ULTIMATE.start_main_~R~0 + -1) * (ULTIMATE.start_main_~R~0 + -1) < A) && 1 == cond) && 2 * u + 4 * A + 4 * r + v * v == 2 * v + u * u [2019-11-28 17:11:32,239 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:11:32,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:11:32,242 INFO L168 Benchmark]: Toolchain (without parser) took 14654.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 961.7 MB in the beginning and 995.4 MB in the end (delta: -33.7 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,242 INFO L168 Benchmark]: CDTParser took 0.99 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 17:11:32,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.34 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,245 INFO L168 Benchmark]: Boogie Preprocessor took 22.63 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,246 INFO L168 Benchmark]: RCFGBuilder took 250.04 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: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,247 INFO L168 Benchmark]: TraceAbstraction took 13940.91 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: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,247 INFO L168 Benchmark]: Witness Printer took 65.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 995.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:11:32,252 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 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 272.34 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.63 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.04 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: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13940.91 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: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. * Witness Printer took 65.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 995.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2019-11-28 17:11:32,264 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,265 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,266 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,266 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~R~0 : int :: (ULTIMATE.start_main_~R~0 + -1) * (ULTIMATE.start_main_~R~0 + -1) < A) && 1 == cond) && 2 * u + 4 * A + 4 * r + v * v == 2 * v + u * u - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant [2019-11-28 17:11:32,268 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,269 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,270 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] [2019-11-28 17:11:32,271 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~R~0,QUANTIFIED] Derived loop invariant: ((((u * 2 + A * 4 + r * 4 + v * v == v * 2 + u * u && 1 == A % 2) && ((u * -1 + 1) / -2 + -1) * ((u * -1 + 1) / -2 + -1) < A) && v == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == A + r) || (((\exists ULTIMATE.start_main_~R~0 : int :: (ULTIMATE.start_main_~R~0 + -1) * (ULTIMATE.start_main_~R~0 + -1) < A) && u * 2 + A * 4 + r * 4 + v * v == v * 2 + u * u) && 1 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 8.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, HoareTripleCheckerStatistics: 11 SDtfs, 20 SDslu, 20 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 143 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 4 QuantifiedInterpolants, 1062 SizeOfPredicates, 16 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 28 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 correct! Received shutdown request...