./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7408fe5ba42f5c474832c90e26f3e7ef2342554c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:38:01,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:38:01,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:38:01,538 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:38:01,538 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:38:01,539 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:38:01,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:38:01,543 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:38:01,544 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:38:01,545 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:38:01,546 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:38:01,547 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:38:01,548 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:38:01,548 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:38:01,550 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:38:01,551 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:38:01,552 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:38:01,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:38:01,556 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:38:01,558 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:38:01,559 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:38:01,560 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:38:01,563 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:38:01,563 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:38:01,563 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:38:01,564 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:38:01,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:38:01,566 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:38:01,567 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:38:01,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:38:01,569 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:38:01,569 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:38:01,570 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:38:01,570 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:38:01,571 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:38:01,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:38:01,572 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:38:01,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:38:01,591 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:38:01,592 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:38:01,592 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:38:01,592 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:38:01,592 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:38:01,593 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:38:01,593 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:38:01,593 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:38:01,593 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:38:01,593 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:38:01,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:38:01,594 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:38:01,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:38:01,594 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:38:01,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:38:01,597 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:38:01,598 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:38:01,598 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:38:01,598 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:38:01,598 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:38:01,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:38:01,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:38:01,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:38:01,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:38:01,599 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:38:01,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:38:01,601 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:38:01,601 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:38:01,602 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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 -> Taipan 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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2018-10-21 12:38:01,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:38:01,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:38:01,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:38:01,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:38:01,689 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:38:01,690 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:01,755 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69384dd18/1cade53ed1854032b8797d03ac387bea/FLAG9939200cb [2018-10-21 12:38:02,183 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:38:02,184 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:02,190 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69384dd18/1cade53ed1854032b8797d03ac387bea/FLAG9939200cb [2018-10-21 12:38:02,203 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69384dd18/1cade53ed1854032b8797d03ac387bea [2018-10-21 12:38:02,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:38:02,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:38:02,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:38:02,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:38:02,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:38:02,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b60141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02, skipping insertion in model container [2018-10-21 12:38:02,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:38:02,249 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:38:02,419 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:38:02,425 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:38:02,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:38:02,466 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:38:02,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02 WrapperNode [2018-10-21 12:38:02,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:38:02,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:38:02,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:38:02,468 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:38:02,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:38:02,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:38:02,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:38:02,492 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:38:02,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... [2018-10-21 12:38:02,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:38:02,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:38:02,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:38:02,524 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:38:02,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-21 12:38:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:38:02,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:38:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:38:02,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:38:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:38:02,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:38:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:38:02,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:38:03,073 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:38:03,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:03 BoogieIcfgContainer [2018-10-21 12:38:03,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:38:03,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:38:03,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:38:03,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:38:03,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:38:02" (1/3) ... [2018-10-21 12:38:03,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427343d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:38:03, skipping insertion in model container [2018-10-21 12:38:03,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:02" (2/3) ... [2018-10-21 12:38:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427343d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:38:03, skipping insertion in model container [2018-10-21 12:38:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:03" (3/3) ... [2018-10-21 12:38:03,082 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:03,092 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:38:03,100 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:38:03,118 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:38:03,169 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:38:03,169 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:38:03,169 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:38:03,170 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:38:03,170 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:38:03,170 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:38:03,170 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:38:03,170 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:38:03,170 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:38:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-21 12:38:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-21 12:38:03,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:03,196 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:03,198 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:03,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:03,204 INFO L82 PathProgramCache]: Analyzing trace with hash -557638975, now seen corresponding path program 1 times [2018-10-21 12:38:03,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:03,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:03,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,252 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:03,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:03,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-21 12:38:03,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:03,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-21 12:38:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-21 12:38:03,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:38:03,324 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-10-21 12:38:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:03,349 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2018-10-21 12:38:03,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-21 12:38:03,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-21 12:38:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:03,366 INFO L225 Difference]: With dead ends: 43 [2018-10-21 12:38:03,366 INFO L226 Difference]: Without dead ends: 17 [2018-10-21 12:38:03,371 INFO L605 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 [2018-10-21 12:38:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-21 12:38:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-21 12:38:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-21 12:38:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-10-21 12:38:03,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-10-21 12:38:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:03,406 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-10-21 12:38:03,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-21 12:38:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-10-21 12:38:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:38:03,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:03,407 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:03,407 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:03,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:03,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1155614924, now seen corresponding path program 1 times [2018-10-21 12:38:03,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:03,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:03,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,409 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:03,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:03,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-21 12:38:03,499 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:03,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-21 12:38:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-21 12:38:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-21 12:38:03,502 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-10-21 12:38:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:03,567 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-10-21 12:38:03,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-21 12:38:03,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-21 12:38:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:03,569 INFO L225 Difference]: With dead ends: 24 [2018-10-21 12:38:03,569 INFO L226 Difference]: Without dead ends: 19 [2018-10-21 12:38:03,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-21 12:38:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-21 12:38:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-21 12:38:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-21 12:38:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-21 12:38:03,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-10-21 12:38:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:03,576 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-21 12:38:03,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-21 12:38:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-21 12:38:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-21 12:38:03,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:03,577 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:03,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:03,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash -220474704, now seen corresponding path program 1 times [2018-10-21 12:38:03,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:03,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:03,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,580 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:03,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:03,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-21 12:38:03,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:03,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-21 12:38:03,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-21 12:38:03,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-21 12:38:03,657 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-10-21 12:38:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:03,704 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-10-21 12:38:03,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-21 12:38:03,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-21 12:38:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:03,706 INFO L225 Difference]: With dead ends: 33 [2018-10-21 12:38:03,706 INFO L226 Difference]: Without dead ends: 21 [2018-10-21 12:38:03,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-21 12:38:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-21 12:38:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-21 12:38:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-21 12:38:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-21 12:38:03,713 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2018-10-21 12:38:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:03,714 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-21 12:38:03,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-21 12:38:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-21 12:38:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-21 12:38:03,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:03,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:03,716 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:03,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:03,716 INFO L82 PathProgramCache]: Analyzing trace with hash 260416874, now seen corresponding path program 1 times [2018-10-21 12:38:03,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:03,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:03,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:03,720 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-21 12:38:03,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:03,795 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:03,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-21 12:38:03,799 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [24], [28], [32], [36], [48], [51], [53], [59], [60], [61], [63] [2018-10-21 12:38:03,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:38:03,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:38:04,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-21 12:38:04,631 INFO L272 AbstractInterpreter]: Visited 18 different actions 432 times. Merged at 8 different actions 304 times. Widened at 4 different actions 125 times. Found 33 fixpoints after 3 different actions. Largest state had 3 variables. [2018-10-21 12:38:04,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:04,653 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-21 12:38:04,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:04,653 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-21 12:38:04,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:04,663 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-21 12:38:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:04,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:38:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-21 12:38:04,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:38:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-21 12:38:04,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:04,876 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-21 12:38:04,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:04,894 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-21 12:38:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:04,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:38:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-21 12:38:04,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:38:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-21 12:38:04,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-21 12:38:04,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-10-21 12:38:04,954 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-21 12:38:04,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-21 12:38:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-21 12:38:04,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:38:04,956 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2018-10-21 12:38:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:05,047 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-10-21 12:38:05,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-21 12:38:05,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-21 12:38:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:05,049 INFO L225 Difference]: With dead ends: 33 [2018-10-21 12:38:05,050 INFO L226 Difference]: Without dead ends: 28 [2018-10-21 12:38:05,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:38:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-21 12:38:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-21 12:38:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-21 12:38:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-21 12:38:05,056 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2018-10-21 12:38:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:05,057 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-21 12:38:05,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-21 12:38:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-21 12:38:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-21 12:38:05,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:05,058 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:05,058 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:05,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1089248186, now seen corresponding path program 2 times [2018-10-21 12:38:05,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:05,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:05,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:05,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:05,060 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:05,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:05,198 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:05,198 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-21 12:38:05,198 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-21 12:38:05,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:05,199 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-21 12:38:05,210 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-21 12:38:05,210 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-21 12:38:05,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-21 12:38:05,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-21 12:38:05,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:38:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-21 12:38:05,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:38:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-21 12:38:05,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:05,544 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-21 12:38:05,565 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-21 12:38:05,565 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-21 12:38:05,587 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-21 12:38:05,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-21 12:38:05,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:38:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-21 12:38:05,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:38:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-21 12:38:05,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-21 12:38:05,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 10 [2018-10-21 12:38:05,636 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-21 12:38:05,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-21 12:38:05,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-21 12:38:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-21 12:38:05,639 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2018-10-21 12:38:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:05,739 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-10-21 12:38:05,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-21 12:38:05,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-10-21 12:38:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:05,741 INFO L225 Difference]: With dead ends: 47 [2018-10-21 12:38:05,741 INFO L226 Difference]: Without dead ends: 30 [2018-10-21 12:38:05,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-21 12:38:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-21 12:38:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-21 12:38:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-21 12:38:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-10-21 12:38:05,748 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 27 [2018-10-21 12:38:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:05,748 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-10-21 12:38:05,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-21 12:38:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-10-21 12:38:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-21 12:38:05,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:05,750 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:05,750 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:05,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash 244005440, now seen corresponding path program 3 times [2018-10-21 12:38:05,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:05,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:05,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-21 12:38:05,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:05,752 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-21 12:38:05,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:05,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-21 12:38:05,903 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:05,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-21 12:38:05,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-21 12:38:05,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-21 12:38:05,905 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-10-21 12:38:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:05,944 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-10-21 12:38:05,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-21 12:38:05,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-10-21 12:38:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:05,945 INFO L225 Difference]: With dead ends: 44 [2018-10-21 12:38:05,945 INFO L226 Difference]: Without dead ends: 0 [2018-10-21 12:38:05,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:38:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-21 12:38:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-21 12:38:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-21 12:38:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-21 12:38:05,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-10-21 12:38:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:05,947 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-21 12:38:05,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-21 12:38:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-21 12:38:05,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-21 12:38:05,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-21 12:38:06,019 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-21 12:38:06,019 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:38:06,019 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:38:06,020 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-21 12:38:06,020 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:38:06,020 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:38:06,020 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-21 12:38:06,020 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2018-10-21 12:38:06,020 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-10-21 12:38:06,020 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (= main_~k~0 4) [2018-10-21 12:38:06,021 INFO L421 ceAbstractionStarter]: At program point L21-4(lines 15 24) the Hoare annotation is: (or (= main_~k~0 4) (and (<= (+ main_~j~0 100) main_~i~0) (<= main_~i~0 0))) [2018-10-21 12:38:06,021 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2018-10-21 12:38:06,021 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 24) no Hoare annotation was computed. [2018-10-21 12:38:06,021 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2018-10-21 12:38:06,021 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2018-10-21 12:38:06,021 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2018-10-21 12:38:06,021 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 24) the Hoare annotation is: (= main_~k~0 4) [2018-10-21 12:38:06,022 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2018-10-21 12:38:06,022 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-21 12:38:06,022 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:38:06,022 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-21 12:38:06,022 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-21 12:38:06,022 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-21 12:38:06,023 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:38:06,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:38:06 BoogieIcfgContainer [2018-10-21 12:38:06,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:38:06,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:38:06,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:38:06,039 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:38:06,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:03" (3/4) ... [2018-10-21 12:38:06,044 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-21 12:38:06,049 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-21 12:38:06,049 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-21 12:38:06,049 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-21 12:38:06,053 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-21 12:38:06,053 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-21 12:38:06,053 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-21 12:38:06,097 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:38:06,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:38:06,098 INFO L168 Benchmark]: Toolchain (without parser) took 3889.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 954.5 MB in the beginning and 944.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 157.0 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:06,100 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:06,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.25 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:06,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.49 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:06,102 INFO L168 Benchmark]: Boogie Preprocessor took 30.98 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:06,102 INFO L168 Benchmark]: RCFGBuilder took 551.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:06,103 INFO L168 Benchmark]: TraceAbstraction took 2962.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.7 MB in the end (delta: 177.6 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:06,104 INFO L168 Benchmark]: Witness Printer took 59.01 ms. Allocated memory is still 1.2 GB. Free memory was 951.7 MB in the beginning and 944.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:06,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 257.25 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 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 23.49 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.98 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 551.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2962.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.7 MB in the end (delta: 177.6 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. * Witness Printer took 59.01 ms. Allocated memory is still 1.2 GB. Free memory was 951.7 MB in the beginning and 944.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. 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: 15]: Loop Invariant Derived loop invariant: k == 4 || (j + 100 <= i && i <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 116 SDtfs, 9 SDslu, 156 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 31 HoareAnnotationTreeSize, 15 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 12613 SizeOfPredicates, 8 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 96/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...