./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-invgen/large_const_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/loop-invgen/large_const_true-unreach-call_true-termination.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 b03e1cb325e2c3a8ef30197a8e07012b3a728d97 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:20:55,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:20:55,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:20:55,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:20:55,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:20:55,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:20:55,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:20:55,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:20:55,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:20:55,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:20:55,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:20:55,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:20:55,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:20:55,497 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:20:55,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:20:55,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:20:55,500 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:20:55,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:20:55,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:20:55,507 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:20:55,508 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:20:55,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:20:55,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:20:55,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:20:55,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:20:55,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:20:55,516 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:20:55,517 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:20:55,518 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:20:55,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:20:55,520 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:20:55,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:20:55,521 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:20:55,521 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:20:55,523 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:20:55,524 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:20:55,524 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:20:55,541 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:20:55,542 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:20:55,543 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:20:55,543 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:20:55,543 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:20:55,544 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:20:55,544 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:20:55,545 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:20:55,545 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:20:55,545 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:20:55,546 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:20:55,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:20:55,547 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:20:55,548 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:20:55,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:20:55,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:20:55,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:20:55,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:20:55,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:20:55,550 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:20:55,550 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:20:55,550 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:20:55,551 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:20:55,551 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:20:55,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:20:55,551 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 [2018-11-28 18:20:55,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:20:55,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:20:55,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:20:55,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:20:55,609 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:20:55,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-11-28 18:20:55,678 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deb1f1de/8ba359a8b0c542bdb80a27612d20ac81/FLAG8f6b5e980 [2018-11-28 18:20:56,121 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:20:56,122 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-11-28 18:20:56,129 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deb1f1de/8ba359a8b0c542bdb80a27612d20ac81/FLAG8f6b5e980 [2018-11-28 18:20:56,516 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deb1f1de/8ba359a8b0c542bdb80a27612d20ac81 [2018-11-28 18:20:56,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:20:56,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:20:56,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:20:56,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:20:56,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:20:56,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4af622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56, skipping insertion in model container [2018-11-28 18:20:56,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:20:56,563 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:20:56,799 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:20:56,803 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:20:56,830 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:20:56,849 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:20:56,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56 WrapperNode [2018-11-28 18:20:56,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:20:56,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:20:56,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:20:56,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:20:56,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:20:56,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:20:56,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:20:56,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:20:56,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (1/1) ... [2018-11-28 18:20:56,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:20:56,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:20:56,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:20:56,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:20:56,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (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 [2018-11-28 18:20:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:20:57,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:20:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:20:57,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:20:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:20:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:20:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:20:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:20:57,607 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:20:57,608 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:20:57,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:57 BoogieIcfgContainer [2018-11-28 18:20:57,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:20:57,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:20:57,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:20:57,614 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:20:57,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:20:56" (1/3) ... [2018-11-28 18:20:57,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb37d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:20:57, skipping insertion in model container [2018-11-28 18:20:57,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:56" (2/3) ... [2018-11-28 18:20:57,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb37d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:20:57, skipping insertion in model container [2018-11-28 18:20:57,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:57" (3/3) ... [2018-11-28 18:20:57,619 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-11-28 18:20:57,630 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:20:57,638 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:20:57,657 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:20:57,692 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:20:57,693 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:20:57,693 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:20:57,693 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:20:57,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:20:57,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:20:57,694 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:20:57,694 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:20:57,694 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:20:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-28 18:20:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:20:57,726 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:57,727 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:57,730 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:57,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2018-11-28 18:20:57,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:57,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:57,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:57,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:57,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:57,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:20:57,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:20:57,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:20:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:20:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:20:57,883 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-28 18:20:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:57,906 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-11-28 18:20:57,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:20:57,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-28 18:20:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:57,918 INFO L225 Difference]: With dead ends: 40 [2018-11-28 18:20:57,918 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 18:20:57,922 INFO L631 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 [2018-11-28 18:20:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 18:20:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 18:20:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 18:20:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-11-28 18:20:57,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2018-11-28 18:20:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:57,959 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-28 18:20:57,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:20:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-11-28 18:20:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:20:57,960 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:57,960 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:57,960 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:57,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:57,961 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2018-11-28 18:20:57,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:57,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:57,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:58,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:20:58,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:20:58,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:20:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:20:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:20:58,090 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2018-11-28 18:20:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:58,259 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-28 18:20:58,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:20:58,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 18:20:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:58,261 INFO L225 Difference]: With dead ends: 32 [2018-11-28 18:20:58,261 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 18:20:58,263 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:20:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 18:20:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-28 18:20:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 18:20:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-28 18:20:58,269 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2018-11-28 18:20:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:58,269 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-28 18:20:58,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:20:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-28 18:20:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:20:58,271 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:58,271 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:58,271 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:58,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2018-11-28 18:20:58,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:58,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:58,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:58,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:58,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:58,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:20:58,460 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:20:58,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:58,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:20:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:58,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:20:58,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 18:20:58,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:20:58,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:20:58,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:20:58,657 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 8 states. [2018-11-28 18:20:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:59,081 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-11-28 18:20:59,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:20:59,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-28 18:20:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:59,085 INFO L225 Difference]: With dead ends: 41 [2018-11-28 18:20:59,085 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:20:59,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:20:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:20:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2018-11-28 18:20:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 18:20:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-11-28 18:20:59,100 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2018-11-28 18:20:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:59,100 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-11-28 18:20:59,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:20:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-11-28 18:20:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 18:20:59,102 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:59,102 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:59,103 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:59,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2018-11-28 18:20:59,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:59,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:59,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:59,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:59,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:59,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:20:59,263 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:20:59,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:59,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:20:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:59,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:20:59,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 18:20:59,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:20:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:20:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:20:59,410 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 8 states. [2018-11-28 18:20:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:59,856 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2018-11-28 18:20:59,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:20:59,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-28 18:20:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:59,860 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:20:59,860 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 18:20:59,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:20:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 18:20:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2018-11-28 18:20:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 18:20:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-28 18:20:59,872 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2018-11-28 18:20:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:59,872 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-28 18:20:59,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:20:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2018-11-28 18:20:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 18:20:59,873 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:59,874 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:59,874 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:59,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:59,874 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2018-11-28 18:20:59,875 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:59,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:59,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:59,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:59,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:00,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:21:00,024 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:21:00,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:00,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:21:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:00,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:21:00,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 18:21:00,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:21:00,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:21:00,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:21:00,163 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 8 states. [2018-11-28 18:21:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:00,359 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2018-11-28 18:21:00,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:21:00,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-28 18:21:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:00,362 INFO L225 Difference]: With dead ends: 55 [2018-11-28 18:21:00,362 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 18:21:00,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:21:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 18:21:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2018-11-28 18:21:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 18:21:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2018-11-28 18:21:00,373 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2018-11-28 18:21:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:00,374 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2018-11-28 18:21:00,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:21:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2018-11-28 18:21:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:21:00,375 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:00,375 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:00,375 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:00,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:00,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2018-11-28 18:21:00,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:00,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:00,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:00,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:00,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:00,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:21:00,432 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:21:00,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:00,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:21:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:00,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:21:00,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-11-28 18:21:00,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:21:00,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:21:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:21:00,515 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 6 states. [2018-11-28 18:21:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:00,551 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2018-11-28 18:21:00,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:21:00,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-28 18:21:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:00,553 INFO L225 Difference]: With dead ends: 61 [2018-11-28 18:21:00,554 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 18:21:00,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:21:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 18:21:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-28 18:21:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 18:21:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-28 18:21:00,563 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2018-11-28 18:21:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:00,563 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-28 18:21:00,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:21:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-28 18:21:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:21:00,564 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:00,565 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:00,565 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:00,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2018-11-28 18:21:00,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:00,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:00,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:00,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:00,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:00,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:00,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:21:00,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:21:00,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:21:00,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:21:00,669 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-11-28 18:21:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:00,894 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-11-28 18:21:00,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:21:00,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-28 18:21:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:00,898 INFO L225 Difference]: With dead ends: 29 [2018-11-28 18:21:00,898 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:21:00,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:21:00,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:21:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:21:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:21:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:21:00,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-28 18:21:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:00,900 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:21:00,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:21:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:21:00,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:21:00,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:21:01,496 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2018-11-28 18:21:01,635 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-11-28 18:21:02,052 WARN L180 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-11-28 18:21:02,055 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:21:02,056 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:21:02,056 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:21:02,056 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:21:02,056 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:21:02,056 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:21:02,056 INFO L444 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 1) (<= main_~n~0 (+ main_~j~0 1))) [2018-11-28 18:21:02,056 INFO L448 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-11-28 18:21:02,057 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-11-28 18:21:02,057 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-28 18:21:02,057 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-28 18:21:02,057 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-11-28 18:21:02,057 INFO L444 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse0 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse5 (<= main_~n~0 main_~j~0))) (or (and .cse0 (and .cse1 (and .cse2 .cse3 (<= 2000 main_~k~0))) .cse4 (<= main_~n~0 (+ main_~j~0 1))) (and (<= main_~n~0 0) (<= main_~i~0 0) .cse5) (and .cse1 .cse2 .cse3 .cse0 .cse4 .cse5))) [2018-11-28 18:21:02,057 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-11-28 18:21:02,058 INFO L448 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2018-11-28 18:21:02,058 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-11-28 18:21:02,058 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-11-28 18:21:02,058 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (<= main_~n~0 1)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2018-11-28 18:21:02,058 INFO L448 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2018-11-28 18:21:02,059 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:21:02,059 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:21:02,059 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:21:02,059 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:21:02,059 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:21:02,059 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:21:02,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:21:02 BoogieIcfgContainer [2018-11-28 18:21:02,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:21:02,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:21:02,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:21:02,076 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:21:02,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:57" (3/4) ... [2018-11-28 18:21:02,080 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:21:02,087 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:21:02,087 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:21:02,087 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:21:02,092 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-28 18:21:02,092 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 18:21:02,093 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:21:02,150 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:21:02,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:21:02,151 INFO L168 Benchmark]: Toolchain (without parser) took 5630.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 952.7 MB in the beginning and 907.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 169.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:02,152 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:02,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:02,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.51 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:02,154 INFO L168 Benchmark]: Boogie Preprocessor took 28.73 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:02,154 INFO L168 Benchmark]: RCFGBuilder took 700.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:02,155 INFO L168 Benchmark]: TraceAbstraction took 4465.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 192.7 MB). Peak memory consumption was 192.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:02,156 INFO L168 Benchmark]: Witness Printer took 74.46 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:02,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.51 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.73 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 700.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4465.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 192.7 MB). Peak memory consumption was 192.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.46 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n <= 1) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((1 <= i && 10000 <= c3 && (2000 <= c2 && 4000 <= c1) && 2000 <= k) && n <= 1) && n <= j + 1) || ((n <= 0 && i <= 0) && n <= j)) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && n <= 1) && n <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 1.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 114 SDslu, 380 SDs, 0 SdLazy, 214 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 127 HoareAnnotationTreeSize, 13 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 6982 SizeOfPredicates, 10 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 14/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...