./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01-2.i --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/loops/sum01-2.i -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 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a ..................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:03:53,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:53,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:53,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:03:53,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:03:53,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:03:53,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:03:53,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:03:53,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:03:53,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:03:53,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:03:53,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:03:53,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:03:53,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:03:53,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:03:53,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:03:53,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:03:53,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:03:53,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:03:53,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:03:53,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:03:53,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:03:53,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:03:53,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:03:53,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:03:53,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:03:53,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:03:53,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:03:53,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:03:53,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:03:53,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:53,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:53,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:53,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:53,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:53,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:53,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:53,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:53,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:53,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:53,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:53,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:03:53,464 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:53,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:53,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:53,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:53,473 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:53,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:53,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:53,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:03:53,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:53,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:53,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:53,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:53,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:53,476 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:53,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:53,477 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:53,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:53,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:53,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:53,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:53,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:53,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:53,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:53,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:53,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:53,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:03:53,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:03:53,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:53,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:53,481 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 -> 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a [2019-11-28 17:03:53,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:53,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:53,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:53,828 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:53,828 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:53,829 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum01-2.i [2019-11-28 17:03:53,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0121ba64c/03f0debbb1fd48c695f7fe5258ea6453/FLAGadc2e7c01 [2019-11-28 17:03:54,369 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:54,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum01-2.i [2019-11-28 17:03:54,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0121ba64c/03f0debbb1fd48c695f7fe5258ea6453/FLAGadc2e7c01 [2019-11-28 17:03:54,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0121ba64c/03f0debbb1fd48c695f7fe5258ea6453 [2019-11-28 17:03:54,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:54,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:54,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:54,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:54,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:54,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:54" (1/1) ... [2019-11-28 17:03:54,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6620ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:54, skipping insertion in model container [2019-11-28 17:03:54,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:54" (1/1) ... [2019-11-28 17:03:54,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:54,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:55,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:55,054 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:55,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:55,092 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55 WrapperNode [2019-11-28 17:03:55,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:55,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:55,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:55,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:55,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:55,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:55,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:55,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:55,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (1/1) ... [2019-11-28 17:03:55,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:55,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:55,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:55,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:55,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (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 17:03:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:55,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:55,424 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:55,425 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:03:55,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:55 BoogieIcfgContainer [2019-11-28 17:03:55,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:55,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:55,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:55,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:55,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:54" (1/3) ... [2019-11-28 17:03:55,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6560cc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:55, skipping insertion in model container [2019-11-28 17:03:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:55" (2/3) ... [2019-11-28 17:03:55,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6560cc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:55, skipping insertion in model container [2019-11-28 17:03:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:55" (3/3) ... [2019-11-28 17:03:55,433 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-11-28 17:03:55,443 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:55,450 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:55,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:55,486 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:55,486 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:55,487 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:55,487 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:55,487 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:55,487 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:55,487 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:55,487 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:03:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:03:55,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:55,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:03:55,507 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 922230154, now seen corresponding path program 1 times [2019-11-28 17:03:55,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:55,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500778411] [2019-11-28 17:03:55,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:55,621 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 17:03:55,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500778411] [2019-11-28 17:03:55,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:55,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:03:55,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465298502] [2019-11-28 17:03:55,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:03:55,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:03:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:55,645 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:03:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:55,660 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-28 17:03:55,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:03:55,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:03:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:55,668 INFO L225 Difference]: With dead ends: 18 [2019-11-28 17:03:55,669 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:03:55,671 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:03:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:03:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:03:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 17:03:55,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 17:03:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:55,702 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 17:03:55,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:03:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 17:03:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:03:55,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:55,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:03:55,703 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:55,704 INFO L82 PathProgramCache]: Analyzing trace with hash 922051408, now seen corresponding path program 1 times [2019-11-28 17:03:55,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:55,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055004458] [2019-11-28 17:03:55,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:55,764 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 17:03:55,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055004458] [2019-11-28 17:03:55,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:55,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:03:55,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561812657] [2019-11-28 17:03:55,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:03:55,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:03:55,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:55,774 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-28 17:03:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:55,842 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 17:03:55,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:03:55,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-28 17:03:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:55,844 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:03:55,845 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:03:55,846 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 17:03:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:03:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:03:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:03:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:03:55,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-28 17:03:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:55,859 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:03:55,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:03:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:03:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:03:55,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:55,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:55,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1381372562, now seen corresponding path program 1 times [2019-11-28 17:03:55,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:55,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348694924] [2019-11-28 17:03:55,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:56,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348694924] [2019-11-28 17:03:56,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296060596] [2019-11-28 17:03:56,114 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 17:03:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:56,150 WARN L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 17:03:56,156 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:56,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:56,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:56,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-28 17:03:56,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959597483] [2019-11-28 17:03:56,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 17:03:56,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 17:03:56,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:03:56,339 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2019-11-28 17:03:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:56,575 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-28 17:03:56,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 17:03:56,576 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2019-11-28 17:03:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:56,576 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:03:56,577 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 17:03:56,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:03:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 17:03:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-28 17:03:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 17:03:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 17:03:56,582 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-11-28 17:03:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:56,583 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 17:03:56,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 17:03:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 17:03:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 17:03:56,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:56,584 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:56,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:56,790 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 693843862, now seen corresponding path program 2 times [2019-11-28 17:03:56,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:56,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744760] [2019-11-28 17:03:56,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 17:03:57,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744760] [2019-11-28 17:03:57,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100590043] [2019-11-28 17:03:57,077 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) [2019-11-28 17:03:57,118 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:57,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:03:57,120 WARN L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 17:03:57,122 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:57,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:57,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:57,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2019-11-28 17:03:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912721121] [2019-11-28 17:03:57,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 17:03:57,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 17:03:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-28 17:03:57,373 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 18 states. [2019-11-28 17:03:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:57,800 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-28 17:03:57,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 17:03:57,801 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 12 [2019-11-28 17:03:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:57,802 INFO L225 Difference]: With dead ends: 17 [2019-11-28 17:03:57,802 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:03:57,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2019-11-28 17:03:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:03:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:03:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:03:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:03:57,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-28 17:03:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:57,804 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:03:57,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 17:03:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:03:57,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:03:58,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:58,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:03:58,077 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:03:58,077 INFO L246 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-28 17:03:58,077 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-28 17:03:58,077 INFO L249 CegarLoopResult]: At program point L5-2(lines 1 18) the Hoare annotation is: true [2019-11-28 17:03:58,078 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:03:58,078 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:03:58,078 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-28 17:03:58,078 INFO L246 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-28 17:03:58,078 INFO L242 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sn~0 0) (= ULTIMATE.start_main_~i~0 1)) (let ((.cse1 (* 2 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1))))) [2019-11-28 17:03:58,079 INFO L246 CegarLoopResult]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-11-28 17:03:58,079 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-28 17:03:58,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:03:58 BoogieIcfgContainer [2019-11-28 17:03:58,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:03:58,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:03:58,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:03:58,098 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:03:58,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:55" (3/4) ... [2019-11-28 17:03:58,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:03:58,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:03:58,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:03:58,166 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:03:58,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:03:58,168 INFO L168 Benchmark]: Toolchain (without parser) took 3362.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 956.3 MB in the beginning and 907.3 MB in the end (delta: 49.0 MB). Peak memory consumption was 181.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,169 INFO L168 Benchmark]: CDTParser took 0.78 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 17:03:58,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.60 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,172 INFO L168 Benchmark]: Boogie Preprocessor took 18.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:03:58,173 INFO L168 Benchmark]: RCFGBuilder took 220.77 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,173 INFO L168 Benchmark]: TraceAbstraction took 2670.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.9 MB in the end (delta: 196.1 MB). Peak memory consumption was 196.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,174 INFO L168 Benchmark]: Witness Printer took 68.59 ms. Allocated memory is still 1.2 GB. Free memory was 913.9 MB in the beginning and 907.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:58,178 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 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 288.60 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 220.77 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2670.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.9 MB in the end (delta: 196.1 MB). Peak memory consumption was 196.1 MB. Max. memory is 11.5 GB. * Witness Printer took 68.59 ms. Allocated memory is still 1.2 GB. Free memory was 913.9 MB in the beginning and 907.3 MB 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: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (sn == 0 && i == 1) || ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 23 SDslu, 24 SDs, 0 SdLazy, 139 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 31 HoareAnnotationTreeSize, 2 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 SizeOfPredicates, 10 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/20 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...