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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:06:59,040 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:06:59,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:06:59,061 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:06:59,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:06:59,063 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:06:59,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:06:59,068 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:06:59,069 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:06:59,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:06:59,072 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:06:59,072 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:06:59,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:06:59,076 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:06:59,083 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:06:59,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:06:59,085 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:06:59,090 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:06:59,092 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:06:59,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:06:59,096 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:06:59,097 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:06:59,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 18:06:59,101 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 18:06:59,101 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 18:06:59,102 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 18:06:59,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 18:06:59,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 18:06:59,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 18:06:59,107 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 18:06:59,108 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 18:06:59,108 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 18:06:59,109 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 18:06:59,110 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 18:06:59,111 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 18:06:59,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 18:06:59,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:06:59,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:06:59,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:06:59,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:06:59,139 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:06:59,139 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:06:59,139 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:06:59,139 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:06:59,139 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:06:59,139 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:06:59,140 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:06:59,140 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:06:59,141 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:06:59,141 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:06:59,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:06:59,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:06:59,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:06:59,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:06:59,144 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:06:59,144 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:06:59,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:06:59,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:06:59,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:06:59,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:06:59,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:06:59,146 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:06:59,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:06:59,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:06:59,146 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:06:59,147 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:06:59,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:06:59,149 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:06:59,149 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:06:59,150 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:06:59,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:06:59,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:06:59,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:06:59,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:06:59,236 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:06:59,237 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-07-23 18:06:59,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51f1bced/fb5a03b98bca4bebace46c8e23137f9e/FLAGf56b2453b [2018-07-23 18:06:59,739 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:06:59,740 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-07-23 18:06:59,746 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51f1bced/fb5a03b98bca4bebace46c8e23137f9e/FLAGf56b2453b [2018-07-23 18:06:59,761 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51f1bced/fb5a03b98bca4bebace46c8e23137f9e [2018-07-23 18:06:59,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:06:59,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:06:59,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:06:59,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:06:59,780 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:06:59,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:59" (1/1) ... [2018-07-23 18:06:59,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629fdfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:59, skipping insertion in model container [2018-07-23 18:06:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:59" (1/1) ... [2018-07-23 18:06:59,999 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:07:00,045 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:07:00,060 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:07:00,068 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:07:00,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00 WrapperNode [2018-07-23 18:07:00,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:07:00,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:07:00,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:07:00,089 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:07:00,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:07:00,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:07:00,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:07:00,115 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:07:00,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (1/1) ... [2018-07-23 18:07:00,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:07:00,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:07:00,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:07:00,140 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:07:00,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (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 [2018-07-23 18:07:00,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:07:00,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:07:00,216 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-23 18:07:00,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-23 18:07:00,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:07:00,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:07:00,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:07:00,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:07:00,708 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:07:00,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:07:00 BoogieIcfgContainer [2018-07-23 18:07:00,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:07:00,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:07:00,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:07:00,716 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:07:00,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:06:59" (1/3) ... [2018-07-23 18:07:00,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eb937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:07:00, skipping insertion in model container [2018-07-23 18:07:00,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:07:00" (2/3) ... [2018-07-23 18:07:00,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eb937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:07:00, skipping insertion in model container [2018-07-23 18:07:00,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:07:00" (3/3) ... [2018-07-23 18:07:00,721 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_true-unreach-call_true-termination.i [2018-07-23 18:07:00,732 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:07:00,743 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:07:00,803 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:07:00,804 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:07:00,804 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:07:00,804 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:07:00,804 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:07:00,804 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:07:00,804 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:07:00,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:07:00,805 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:07:00,826 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-07-23 18:07:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 18:07:00,832 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:00,833 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:00,833 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:00,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1764199642, now seen corresponding path program 1 times [2018-07-23 18:07:00,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:00,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:00,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:00,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:00,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:00,962 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:07:00,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 18:07:00,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:07:00,967 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 18:07:00,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 18:07:00,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:07:00,984 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-07-23 18:07:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:01,006 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-07-23 18:07:01,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 18:07:01,008 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-07-23 18:07:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:01,018 INFO L225 Difference]: With dead ends: 43 [2018-07-23 18:07:01,018 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 18:07:01,022 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 [2018-07-23 18:07:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 18:07:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 18:07:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 18:07:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-07-23 18:07:01,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-07-23 18:07:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:01,066 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-07-23 18:07:01,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 18:07:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-07-23 18:07:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 18:07:01,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:01,067 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:01,067 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1946243441, now seen corresponding path program 1 times [2018-07-23 18:07:01,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:01,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:01,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:01,185 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:07:01,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:07:01,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:07:01,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:07:01,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:07:01,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:07:01,188 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-07-23 18:07:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:01,267 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-07-23 18:07:01,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:07:01,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-07-23 18:07:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:01,269 INFO L225 Difference]: With dead ends: 29 [2018-07-23 18:07:01,269 INFO L226 Difference]: Without dead ends: 24 [2018-07-23 18:07:01,270 INFO L573 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 [2018-07-23 18:07:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-23 18:07:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-07-23 18:07:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 18:07:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-07-23 18:07:01,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-07-23 18:07:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:01,276 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-07-23 18:07:01,276 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:07:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-07-23 18:07:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 18:07:01,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:01,277 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:01,278 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash -281489901, now seen corresponding path program 1 times [2018-07-23 18:07:01,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:01,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:01,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:01,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:07:01,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 18:07:01,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:07:01,398 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 18:07:01,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 18:07:01,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 18:07:01,400 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2018-07-23 18:07:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:01,469 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-07-23 18:07:01,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:07:01,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-07-23 18:07:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:01,471 INFO L225 Difference]: With dead ends: 35 [2018-07-23 18:07:01,471 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 18:07:01,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 18:07:01,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 18:07:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-07-23 18:07:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 18:07:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-07-23 18:07:01,482 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2018-07-23 18:07:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:01,482 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-07-23 18:07:01,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 18:07:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-07-23 18:07:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 18:07:01,485 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:01,485 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:01,486 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 388960234, now seen corresponding path program 1 times [2018-07-23 18:07:01,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:01,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:01,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:01,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:01,863 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-07-23 18:07:02,178 WARN L169 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 15 [2018-07-23 18:07:02,403 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2018-07-23 18:07:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:02,487 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:02,487 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:07:02,488 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-07-23 18:07:02,490 INFO L201 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [22], [24], [28], [31], [33], [36], [40], [44], [51], [52], [53], [55] [2018-07-23 18:07:02,537 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:07:02,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:07:02,638 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 18:07:02,725 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 18:07:02,726 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 4 different actions 4 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 10 variables. [2018-07-23 18:07:02,760 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 18:07:02,760 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:02,761 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 [2018-07-23 18:07:02,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:02,776 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:07:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:02,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:02,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2018-07-23 18:07:02,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-07-23 18:07:02,982 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,010 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:17 [2018-07-23 18:07:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:03,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:03,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-07-23 18:07:03,365 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-07-23 18:07:03,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,369 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,375 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-07-23 18:07:03,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:11 [2018-07-23 18:07:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:03,802 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:03,802 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 [2018-07-23 18:07:03,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:03,820 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:07:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:03,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:03,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2018-07-23 18:07:03,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-07-23 18:07:03,875 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,880 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,910 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:03,911 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:17 [2018-07-23 18:07:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:04,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-07-23 18:07:04,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-07-23 18:07:04,126 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-23 18:07:04,128 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:07:04,133 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-07-23 18:07:04,133 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:11 [2018-07-23 18:07:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:07:04,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8, 7, 8] total 15 [2018-07-23 18:07:04,142 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:07:04,143 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 18:07:04,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 18:07:04,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-23 18:07:04,144 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 9 states. [2018-07-23 18:07:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:04,410 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-07-23 18:07:04,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 18:07:04,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-23 18:07:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:04,414 INFO L225 Difference]: With dead ends: 42 [2018-07-23 18:07:04,414 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 18:07:04,416 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-07-23 18:07:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 18:07:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2018-07-23 18:07:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 18:07:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-07-23 18:07:04,424 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-07-23 18:07:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:04,424 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-07-23 18:07:04,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 18:07:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-07-23 18:07:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 18:07:04,426 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:04,426 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:04,426 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash -202207679, now seen corresponding path program 2 times [2018-07-23 18:07:04,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:04,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:04,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:07:04,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:04,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,590 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:04,591 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:07:04,591 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:07:04,591 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:07:04,591 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:04,591 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 [2018-07-23 18:07:04,601 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:07:04,601 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:07:04,621 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:07:04,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:04,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,772 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:04,772 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 [2018-07-23 18:07:04,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:07:04,795 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:07:04,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:07:04,836 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:04,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:07:04,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:07:04,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-23 18:07:04,895 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:07:04,896 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 18:07:04,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 18:07:04,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-23 18:07:04,897 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-07-23 18:07:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:04,963 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-07-23 18:07:04,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 18:07:04,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-07-23 18:07:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:04,966 INFO L225 Difference]: With dead ends: 44 [2018-07-23 18:07:04,966 INFO L226 Difference]: Without dead ends: 30 [2018-07-23 18:07:04,967 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-23 18:07:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-23 18:07:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-23 18:07:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 18:07:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-07-23 18:07:04,973 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2018-07-23 18:07:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:04,973 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-07-23 18:07:04,973 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 18:07:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-07-23 18:07:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 18:07:04,974 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:04,975 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:04,975 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:04,975 INFO L82 PathProgramCache]: Analyzing trace with hash -873003793, now seen corresponding path program 3 times [2018-07-23 18:07:04,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:04,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:07:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:04,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 18:07:05,179 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:05,179 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:07:05,180 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:07:05,180 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:07:05,180 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:05,180 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 [2018-07-23 18:07:05,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:07:05,193 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:07:05,220 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-23 18:07:05,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:05,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 18:07:05,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 18:07:05,468 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:05,468 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 [2018-07-23 18:07:05,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:07:05,484 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:07:05,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-23 18:07:05,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:05,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 18:07:05,527 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 18:07:05,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:07:05,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4, 4, 4] total 9 [2018-07-23 18:07:05,581 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:07:05,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 18:07:05,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 18:07:05,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:07:05,582 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 7 states. [2018-07-23 18:07:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:05,609 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-07-23 18:07:05,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:07:05,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-07-23 18:07:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:05,613 INFO L225 Difference]: With dead ends: 30 [2018-07-23 18:07:05,613 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 18:07:05,613 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:07:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 18:07:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 18:07:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 18:07:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 18:07:05,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-07-23 18:07:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:05,615 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 18:07:05,615 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 18:07:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 18:07:05,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 18:07:05,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 18:07:05,785 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2018-07-23 18:07:05,920 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-07-23 18:07:05,946 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-23 18:07:05,947 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-07-23 18:07:05,947 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_matrix_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-23 18:07:05,947 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-23 18:07:05,947 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point L20(lines 20 26) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point L24(lines 24 25) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point L19''(lines 19 26) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L417 ceAbstractionStarter]: At program point L19''''(lines 19 26) the Hoare annotation is: (and (<= (select (select main_~matriz~0 0) 0) main_~maior~0) (<= main_~N_LIN~0 1) (<= 1 main_~N_LIN~0)) [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2018-07-23 18:07:05,948 INFO L421 ceAbstractionStarter]: For program point L20''(lines 20 26) no Hoare annotation was computed. [2018-07-23 18:07:05,949 INFO L417 ceAbstractionStarter]: At program point L19'''(lines 19 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse1 (<= main_~N_LIN~0 1)) (.cse2 (<= 1 main_~N_LIN~0))) (or (and .cse0 (= main_~j~0 0) .cse1 .cse2) (and (= main_~k~0 1) .cse0 (<= (select (select main_~matriz~0 0) 0) main_~maior~0) (= main_~j~0 1) .cse1 .cse2))) [2018-07-23 18:07:05,949 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2018-07-23 18:07:05,949 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2018-07-23 18:07:05,949 INFO L421 ceAbstractionStarter]: For program point L19(lines 19 26) no Hoare annotation was computed. [2018-07-23 18:07:05,949 INFO L417 ceAbstractionStarter]: At program point L20'''(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse1 (<= main_~N_LIN~0 1)) (.cse2 (<= 1 main_~N_LIN~0))) (or (and (= main_~k~0 1) .cse0 (= main_~j~0 0) (<= (select (select main_~matriz~0 0) 0) main_~maior~0) .cse1 .cse2) (and (= main_~k~0 0) .cse0 (<= main_~j~0 0) .cse1 (< 0 (+ (div main_~j~0 4294967296) 1)) .cse2))) [2018-07-23 18:07:05,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:07:05 BoogieIcfgContainer [2018-07-23 18:07:05,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:07:05,965 INFO L168 Benchmark]: Toolchain (without parser) took 6193.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -469.2 MB). Peak memory consumption was 266.9 MB. Max. memory is 7.1 GB. [2018-07-23 18:07:05,966 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. [2018-07-23 18:07:05,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.27 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. [2018-07-23 18:07:05,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.27 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. [2018-07-23 18:07:05,968 INFO L168 Benchmark]: Boogie Preprocessor took 24.78 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. [2018-07-23 18:07:05,969 INFO L168 Benchmark]: RCFGBuilder took 569.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -774.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-07-23 18:07:05,970 INFO L168 Benchmark]: TraceAbstraction took 5253.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.1 MB). Peak memory consumption was 295.1 MB. Max. memory is 7.1 GB. [2018-07-23 18:07:05,974 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 314.27 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 26.27 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 24.78 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 569.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -774.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5253.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.1 MB). Peak memory consumption was 295.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((k == 1 && 1 == N_COL) && j == 0) && matriz[0][0] <= maior) && N_LIN <= 1) && 1 <= N_LIN) || (((((k == 0 && 1 == N_COL) && j <= 0) && N_LIN <= 1) && 0 < j / 4294967296 + 1) && 1 <= N_LIN) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((1 == N_COL && j == 0) && N_LIN <= 1) && 1 <= N_LIN) || (((((k == 1 && 1 == N_COL) && matriz[0][0] <= maior) && j == 1) && N_LIN <= 1) && 1 <= N_LIN) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 77 SDslu, 150 SDs, 0 SdLazy, 108 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 272 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 103 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 384 ConstructedInterpolants, 7 QuantifiedInterpolants, 42675 SizeOfPredicates, 21 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 137/177 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/matrix_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-07-05-989.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/matrix_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-07-05-989.csv Received shutdown request...