java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/sum01_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 10:43:55,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:43:55,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:43:55,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:43:55,745 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:43:55,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:43:55,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:43:55,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:43:55,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:43:55,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:43:55,752 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:43:55,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:43:55,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:43:55,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:43:55,756 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:43:55,757 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:43:55,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:43:55,759 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:43:55,761 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:43:55,763 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:43:55,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:43:55,765 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:43:55,768 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 10:43:55,768 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 10:43:55,768 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 10:43:55,769 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 10:43:55,770 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 10:43:55,771 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 10:43:55,772 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 10:43:55,773 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 10:43:55,773 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 10:43:55,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 10:43:55,774 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 10:43:55,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 10:43:55,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 10:43:55,776 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 10:43:55,777 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 10:43:55,792 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:43:55,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:43:55,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:43:55,794 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:43:55,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:43:55,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:43:55,794 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:43:55,794 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:43:55,795 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:43:55,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:43:55,795 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:43:55,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:43:55,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:43:55,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:43:55,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:43:55,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:43:55,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:43:55,797 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:43:55,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:43:55,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:43:55,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:43:55,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:43:55,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:43:55,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:43:55,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:43:55,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:43:55,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:43:55,799 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:43:55,799 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:43:55,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:43:55,799 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:43:55,800 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:43:55,800 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:43:55,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:43:55,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:43:55,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:43:55,862 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:43:55,862 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:43:55,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_false-unreach-call_true-termination.i [2018-07-24 10:43:56,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10662b90/1a945d3c55004ade817e3154a22ec984/FLAG09f723fce [2018-07-24 10:43:56,325 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:43:56,326 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_false-unreach-call_true-termination.i [2018-07-24 10:43:56,332 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10662b90/1a945d3c55004ade817e3154a22ec984/FLAG09f723fce [2018-07-24 10:43:56,349 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10662b90/1a945d3c55004ade817e3154a22ec984 [2018-07-24 10:43:56,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:43:56,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:43:56,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:43:56,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:43:56,371 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:43:56,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788e0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56, skipping insertion in model container [2018-07-24 10:43:56,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,593 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:43:56,645 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:43:56,665 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:43:56,672 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:43:56,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56 WrapperNode [2018-07-24 10:43:56,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:43:56,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:43:56,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:43:56,691 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:43:56,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:43:56,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:43:56,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:43:56,718 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:43:56,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (1/1) ... [2018-07-24 10:43:56,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:43:56,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:43:56,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:43:56,747 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:43:56,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (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 [2018-07-24 10:43:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:43:56,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:43:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:43:56,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:43:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:43:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:43:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:43:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:43:57,137 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:43:57,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:43:57 BoogieIcfgContainer [2018-07-24 10:43:57,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:43:57,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:43:57,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:43:57,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:43:57,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:43:56" (1/3) ... [2018-07-24 10:43:57,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf1fb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:43:57, skipping insertion in model container [2018-07-24 10:43:57,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:43:56" (2/3) ... [2018-07-24 10:43:57,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf1fb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:43:57, skipping insertion in model container [2018-07-24 10:43:57,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:43:57" (3/3) ... [2018-07-24 10:43:57,147 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_false-unreach-call_true-termination.i [2018-07-24 10:43:57,158 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:43:57,172 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:43:57,257 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:43:57,258 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:43:57,258 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:43:57,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:43:57,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:43:57,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:43:57,259 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:43:57,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:43:57,259 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:43:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-07-24 10:43:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-24 10:43:57,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:43:57,301 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:43:57,302 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:43:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2038308009, now seen corresponding path program 1 times [2018-07-24 10:43:57,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:43:57,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:43:57,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:43:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:43:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:57,452 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:43:57,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 10:43:57,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:43:57,458 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-24 10:43:57,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-24 10:43:57,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:43:57,479 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-07-24 10:43:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:43:57,510 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-07-24 10:43:57,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 10:43:57,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-07-24 10:43:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:43:57,527 INFO L225 Difference]: With dead ends: 31 [2018-07-24 10:43:57,527 INFO L226 Difference]: Without dead ends: 14 [2018-07-24 10:43:57,531 INFO L573 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 [2018-07-24 10:43:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-24 10:43:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-24 10:43:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-24 10:43:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-07-24 10:43:57,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-07-24 10:43:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:43:57,572 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-07-24 10:43:57,572 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-24 10:43:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-07-24 10:43:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-24 10:43:57,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:43:57,573 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:43:57,573 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:43:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1654127473, now seen corresponding path program 1 times [2018-07-24 10:43:57,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:43:57,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:43:57,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:43:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:43:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:57,697 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:43:57,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:43:57,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:43:57,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:43:57,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:43:57,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:43:57,700 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-07-24 10:43:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:43:57,786 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-24 10:43:57,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:43:57,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-07-24 10:43:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:43:57,788 INFO L225 Difference]: With dead ends: 23 [2018-07-24 10:43:57,788 INFO L226 Difference]: Without dead ends: 18 [2018-07-24 10:43:57,789 INFO L573 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 [2018-07-24 10:43:57,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-24 10:43:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-24 10:43:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-24 10:43:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-07-24 10:43:57,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2018-07-24 10:43:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:43:57,796 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-07-24 10:43:57,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:43:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-07-24 10:43:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 10:43:57,798 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:43:57,798 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:43:57,798 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:43:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1318760104, now seen corresponding path program 1 times [2018-07-24 10:43:57,799 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:43:57,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:43:57,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:43:57,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:43:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:43:58,215 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-07-24 10:43:58,418 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-07-24 10:43:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:58,488 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:43:58,488 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-07-24 10:43:58,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:43:58,501 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:43:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:43:58,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:43:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:58,888 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:43:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:59,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:43:59,367 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 10:43:59,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:43:59,387 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:43:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:43:59,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:43:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:59,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:43:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:43:59,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:43:59,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 21 [2018-07-24 10:43:59,452 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:43:59,453 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 10:43:59,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 10:43:59,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-07-24 10:43:59,459 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2018-07-24 10:44:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:00,169 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-07-24 10:44:00,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 10:44:00,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2018-07-24 10:44:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:00,171 INFO L225 Difference]: With dead ends: 43 [2018-07-24 10:44:00,171 INFO L226 Difference]: Without dead ends: 26 [2018-07-24 10:44:00,173 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2018-07-24 10:44:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-24 10:44:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-07-24 10:44:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-24 10:44:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-07-24 10:44:00,178 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2018-07-24 10:44:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:00,179 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-07-24 10:44:00,179 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 10:44:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-07-24 10:44:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-24 10:44:00,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:00,180 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:00,180 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash 983139690, now seen corresponding path program 2 times [2018-07-24 10:44:00,181 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:00,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:00,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:44:00,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:00,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 10:44:00,497 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:00,497 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-07-24 10:44:00,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:44:00,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:00,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:44:00,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:00,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:00,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:01,392 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:01,393 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 10:44:01,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:44:01,410 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:01,437 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:44:01,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:01,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:01,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:01,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:01,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13, 13, 13] total 30 [2018-07-24 10:44:01,530 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:01,531 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 10:44:01,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 10:44:01,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2018-07-24 10:44:01,532 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 19 states. [2018-07-24 10:44:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:02,263 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-07-24 10:44:02,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 10:44:02,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-07-24 10:44:02,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:02,270 INFO L225 Difference]: With dead ends: 47 [2018-07-24 10:44:02,270 INFO L226 Difference]: Without dead ends: 34 [2018-07-24 10:44:02,272 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2018-07-24 10:44:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-24 10:44:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-07-24 10:44:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-24 10:44:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-07-24 10:44:02,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 23 [2018-07-24 10:44:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:02,279 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-07-24 10:44:02,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-24 10:44:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-07-24 10:44:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-24 10:44:02,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:02,280 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:02,280 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1928061242, now seen corresponding path program 1 times [2018-07-24 10:44:02,281 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:02,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:02,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:44:02,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:02,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,420 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:02,420 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:44:02,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:44:02,429 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:44:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:02,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,448 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,591 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:02,591 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:44:02,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:44:02,611 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:44:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:02,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:02,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 11 [2018-07-24 10:44:02,685 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:02,686 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:44:02,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:44:02,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:02,687 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 7 states. [2018-07-24 10:44:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:02,740 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-07-24 10:44:02,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:44:02,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-07-24 10:44:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:02,744 INFO L225 Difference]: With dead ends: 47 [2018-07-24 10:44:02,744 INFO L226 Difference]: Without dead ends: 38 [2018-07-24 10:44:02,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-24 10:44:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-07-24 10:44:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-24 10:44:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-07-24 10:44:02,751 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 31 [2018-07-24 10:44:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:02,751 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-07-24 10:44:02,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:44:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-07-24 10:44:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-24 10:44:02,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:02,753 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:02,753 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash -211554429, now seen corresponding path program 2 times [2018-07-24 10:44:02,753 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:02,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:02,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:44:02,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:02,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,857 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:02,857 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:44:02,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:44:02,866 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:02,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:44:02,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:02,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:02,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:03,477 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:03,477 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:44:03,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:44:03,493 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:03,519 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:44:03,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:03,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:03,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:03,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:03,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 11 [2018-07-24 10:44:03,570 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:03,571 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:44:03,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:44:03,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:03,572 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 8 states. [2018-07-24 10:44:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:03,771 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-07-24 10:44:03,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:44:03,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-07-24 10:44:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:03,773 INFO L225 Difference]: With dead ends: 51 [2018-07-24 10:44:03,774 INFO L226 Difference]: Without dead ends: 42 [2018-07-24 10:44:03,774 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-24 10:44:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-07-24 10:44:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-24 10:44:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-07-24 10:44:03,782 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 35 [2018-07-24 10:44:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:03,783 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-07-24 10:44:03,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:44:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-07-24 10:44:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-24 10:44:03,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:03,784 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:03,784 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1093251404, now seen corresponding path program 3 times [2018-07-24 10:44:03,785 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:03,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:03,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:44:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:03,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,007 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:04,007 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:44:04,015 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:44:04,016 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:44:04,046 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-07-24 10:44:04,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:04,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,175 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:04,176 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:44:04,191 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:44:04,192 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:44:04,249 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-07-24 10:44:04,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:04,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:04,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 11 [2018-07-24 10:44:04,336 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:04,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 10:44:04,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 10:44:04,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:04,338 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2018-07-24 10:44:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:04,405 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-07-24 10:44:04,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:44:04,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-07-24 10:44:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:04,406 INFO L225 Difference]: With dead ends: 55 [2018-07-24 10:44:04,407 INFO L226 Difference]: Without dead ends: 46 [2018-07-24 10:44:04,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-24 10:44:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-07-24 10:44:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-24 10:44:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-07-24 10:44:04,413 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 39 [2018-07-24 10:44:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:04,414 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-07-24 10:44:04,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 10:44:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-07-24 10:44:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-24 10:44:04,415 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:04,415 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:04,415 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash -818452843, now seen corresponding path program 4 times [2018-07-24 10:44:04,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:04,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:04,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:44:04,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:04,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,565 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:04,565 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:44:04,572 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:44:04,573 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:44:04,589 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:44:04,589 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:04,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,913 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:04,914 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:44:04,931 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:44:04,931 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:44:04,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:44:04,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:04,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:04,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:05,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10] total 11 [2018-07-24 10:44:05,127 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:05,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 10:44:05,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 10:44:05,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:05,129 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 10 states. [2018-07-24 10:44:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:05,211 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-07-24 10:44:05,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 10:44:05,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2018-07-24 10:44:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:05,214 INFO L225 Difference]: With dead ends: 59 [2018-07-24 10:44:05,214 INFO L226 Difference]: Without dead ends: 50 [2018-07-24 10:44:05,215 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 157 SyntacticMatches, 14 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-24 10:44:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-07-24 10:44:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-24 10:44:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-07-24 10:44:05,222 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 43 [2018-07-24 10:44:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:05,222 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-07-24 10:44:05,223 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 10:44:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-07-24 10:44:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-24 10:44:05,224 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:05,224 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:05,224 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:05,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1989718178, now seen corresponding path program 5 times [2018-07-24 10:44:05,224 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:05,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:05,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:44:05,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:05,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:44:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,346 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:05,347 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:44:05,356 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:44:05,356 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:05,378 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-07-24 10:44:05,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:05,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,542 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:44:05,542 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:44:05,558 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:44:05,558 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:44:05,618 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-07-24 10:44:05,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:44:05,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:44:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:44:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:44:05,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:44:05,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 11 [2018-07-24 10:44:05,845 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:44:05,846 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 10:44:05,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 10:44:05,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:05,846 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 11 states. [2018-07-24 10:44:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:44:05,921 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-07-24 10:44:05,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 10:44:05,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-07-24 10:44:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:44:05,922 INFO L225 Difference]: With dead ends: 63 [2018-07-24 10:44:05,923 INFO L226 Difference]: Without dead ends: 54 [2018-07-24 10:44:05,923 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 170 SyntacticMatches, 18 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:44:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-24 10:44:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-07-24 10:44:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-24 10:44:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-07-24 10:44:05,930 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 47 [2018-07-24 10:44:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:44:05,930 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-07-24 10:44:05,930 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 10:44:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-07-24 10:44:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-24 10:44:05,931 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:44:05,932 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:44:05,932 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum___false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:44:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1685302183, now seen corresponding path program 6 times [2018-07-24 10:44:05,932 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:44:05,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:05,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:44:05,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:44:05,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:44:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-24 10:44:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-24 10:44:05,985 INFO L419 BasicCegarLoop]: Counterexample might be feasible [2018-07-24 10:44:06,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 10:44:06 BoogieIcfgContainer [2018-07-24 10:44:06,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 10:44:06,020 INFO L168 Benchmark]: Toolchain (without parser) took 9658.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -888.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:44:06,021 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:44:06,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 10:44:06,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:44:06,023 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:44:06,023 INFO L168 Benchmark]: RCFGBuilder took 391.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-07-24 10:44:06,024 INFO L168 Benchmark]: TraceAbstraction took 8879.50 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 141.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -116.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2018-07-24 10:44:06,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 391.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8879.50 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 141.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -116.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=0, n=10] [L13] COND TRUE i<=n VAL [i=1, n=10, n=0] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=10, n=2] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=2, n=10, n=2] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=4, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=3, n=4, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=10, n=6] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=4, n=10, n=6] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=10, n=8] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=5, n=8, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=12, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=7, n=10, n=12] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=14, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=8, n=14, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=16, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=9, n=10, n=16] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=18, n=10] [L13] i++ [L13] i++ [L13] COND TRUE i<=n VAL [i=10, n=18, n=10] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ [L13] i++ [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 8.7s OverallTime, 10 OverallIterations, 11 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 59 SDslu, 510 SDs, 0 SdLazy, 448 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1011 GetRequests, 847 SyntacticMatches, 50 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=9, 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, 9 MinimizatonAttempts, 8 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 771 NumberOfCodeBlocks, 771 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1149 ConstructedInterpolants, 24 QuantifiedInterpolants, 122241 SizeOfPredicates, 26 NumberOfNonLiveVariables, 904 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 37 InterpolantComputations, 2 PerfectInterpolantSequences, 508/2650 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sum01_false-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_10-44-06-041.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sum01_false-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_10-44-06-041.csv Received shutdown request...