java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:41:32,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:41:32,562 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:41:32,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:41:32,574 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:41:32,575 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:41:32,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:41:32,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:41:32,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:41:32,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:41:32,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:41:32,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:41:32,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:41:32,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:41:32,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:41:32,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:41:32,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:41:32,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:41:32,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:41:32,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:41:32,594 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:41:32,595 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:41:32,597 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:41:32,609 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:41:32,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:41:32,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:41:32,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:41:32,611 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 [2018-09-18 11:41:32,643 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:41:32,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:41:32,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:41:32,648 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:41:32,648 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:41:32,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:41:32,649 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:41:32,650 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:41:32,650 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:41:32,650 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:41:32,650 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:41:32,650 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:41:32,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:41:32,651 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:41:32,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:41:32,653 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:41:32,653 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:41:32,653 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:41:32,653 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:41:32,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:41:32,654 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:41:32,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:41:32,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:41:32,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:41:32,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:41:32,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:41:32,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:41:32,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:41:32,656 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:41:32,657 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:41:32,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:41:32,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:41:32,657 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:41:32,657 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:41:32,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:41:32,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:41:32,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:41:32,734 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:41:32,734 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:41:32,735 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-18 11:41:33,115 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ec0faa6/134dc36082ba44a9b373f93e55f7ac6a/FLAG7bb78a59a [2018-09-18 11:41:33,573 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:41:33,575 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-18 11:41:33,616 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ec0faa6/134dc36082ba44a9b373f93e55f7ac6a/FLAG7bb78a59a [2018-09-18 11:41:33,633 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ec0faa6/134dc36082ba44a9b373f93e55f7ac6a [2018-09-18 11:41:33,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:41:33,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:41:33,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:33,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:41:33,664 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:41:33,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:33" (1/1) ... [2018-09-18 11:41:33,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6961f4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:33, skipping insertion in model container [2018-09-18 11:41:33,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:33" (1/1) ... [2018-09-18 11:41:33,683 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:41:35,261 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:35,283 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:41:36,110 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:36,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36 WrapperNode [2018-09-18 11:41:36,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:36,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:36,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:41:36,493 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:41:36,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:36,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:36,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:36,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:41:36,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:41:36,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:41:37,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:37,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (1/1) ... [2018-09-18 11:41:38,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:41:38,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:41:38,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:41:38,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:41:38,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (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 [2018-09-18 11:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:41:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:41:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:41:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:41:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:41:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:41:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:41:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:41:48,974 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:41:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:48 BoogieIcfgContainer [2018-09-18 11:41:48,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:41:48,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:41:48,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:41:48,979 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:41:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:41:33" (1/3) ... [2018-09-18 11:41:48,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332217b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:48, skipping insertion in model container [2018-09-18 11:41:48,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:36" (2/3) ... [2018-09-18 11:41:48,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332217b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:48, skipping insertion in model container [2018-09-18 11:41:48,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:48" (3/3) ... [2018-09-18 11:41:48,983 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-09-18 11:41:48,992 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:41:49,000 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:41:49,061 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:41:49,062 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:41:49,062 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:41:49,062 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:41:49,063 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:41:49,063 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:41:49,063 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:41:49,063 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:41:49,063 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:41:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:41:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-18 11:41:49,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:49,123 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:41:49,124 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1638036668, now seen corresponding path program 1 times [2018-09-18 11:41:49,132 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:49,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:49,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:49,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:49,183 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:49,617 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:41:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:41:49,769 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:41:49,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:41:49,769 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:49,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:41:49,790 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:41:49,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:41:49,794 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-18 11:41:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:41:58,640 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-09-18 11:41:58,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:41:58,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-09-18 11:41:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:41:58,679 INFO L225 Difference]: With dead ends: 3104 [2018-09-18 11:41:58,679 INFO L226 Difference]: Without dead ends: 1982 [2018-09-18 11:41:58,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:41:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-09-18 11:41:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-09-18 11:41:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-09-18 11:41:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-09-18 11:41:58,877 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 52 [2018-09-18 11:41:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:41:58,878 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-09-18 11:41:58,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:41:58,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-09-18 11:41:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-18 11:41:58,887 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:58,887 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:41:58,888 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash -228599944, now seen corresponding path program 1 times [2018-09-18 11:41:58,888 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:58,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:58,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:58,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:58,890 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:41:59,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:41:59,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:41:59,274 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:59,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:41:59,277 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:41:59,277 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:41:59,278 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-09-18 11:42:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:15,463 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-09-18 11:42:15,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:15,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-09-18 11:42:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:15,498 INFO L225 Difference]: With dead ends: 5645 [2018-09-18 11:42:15,603 INFO L226 Difference]: Without dead ends: 3686 [2018-09-18 11:42:15,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-09-18 11:42:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-09-18 11:42:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-09-18 11:42:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5961 transitions. [2018-09-18 11:42:15,745 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5961 transitions. Word has length 122 [2018-09-18 11:42:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:15,746 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 5961 transitions. [2018-09-18 11:42:15,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5961 transitions. [2018-09-18 11:42:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-18 11:42:15,763 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:15,764 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:15,764 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1612728044, now seen corresponding path program 1 times [2018-09-18 11:42:15,765 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:15,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:15,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:15,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:15,767 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:16,025 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:16,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:42:16,026 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:16,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:16,027 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:16,027 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:42:16,027 INFO L87 Difference]: Start difference. First operand 3654 states and 5961 transitions. Second operand 5 states. [2018-09-18 11:42:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:30,128 INFO L93 Difference]: Finished difference Result 10941 states and 18369 transitions. [2018-09-18 11:42:30,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:42:30,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-09-18 11:42:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:30,170 INFO L225 Difference]: With dead ends: 10941 [2018-09-18 11:42:30,170 INFO L226 Difference]: Without dead ends: 7293 [2018-09-18 11:42:30,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2018-09-18 11:42:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 7138. [2018-09-18 11:42:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7138 states. [2018-09-18 11:42:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 10867 transitions. [2018-09-18 11:42:30,394 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 10867 transitions. Word has length 124 [2018-09-18 11:42:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:30,395 INFO L480 AbstractCegarLoop]: Abstraction has 7138 states and 10867 transitions. [2018-09-18 11:42:30,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 10867 transitions. [2018-09-18 11:42:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-18 11:42:30,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:30,404 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:30,404 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1125748408, now seen corresponding path program 1 times [2018-09-18 11:42:30,404 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:30,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:30,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:30,406 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:42:30,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:30,838 INFO L197 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 [2018-09-18 11:42:30,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:30,850 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:30,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:42:31,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:42:31,441 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:42:31,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-18 11:42:31,441 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:31,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:42:31,442 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:42:31,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:42:31,444 INFO L87 Difference]: Start difference. First operand 7138 states and 10867 transitions. Second operand 4 states. [2018-09-18 11:42:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:40,190 INFO L93 Difference]: Finished difference Result 20906 states and 32852 transitions. [2018-09-18 11:42:40,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:42:40,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-09-18 11:42:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:40,296 INFO L225 Difference]: With dead ends: 20906 [2018-09-18 11:42:40,296 INFO L226 Difference]: Without dead ends: 13774 [2018-09-18 11:42:40,337 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:42:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2018-09-18 11:42:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 13757. [2018-09-18 11:42:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13757 states. [2018-09-18 11:42:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13757 states to 13757 states and 20300 transitions. [2018-09-18 11:42:40,964 INFO L78 Accepts]: Start accepts. Automaton has 13757 states and 20300 transitions. Word has length 146 [2018-09-18 11:42:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:40,965 INFO L480 AbstractCegarLoop]: Abstraction has 13757 states and 20300 transitions. [2018-09-18 11:42:40,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:42:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13757 states and 20300 transitions. [2018-09-18 11:42:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-09-18 11:42:40,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:40,971 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:40,975 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2106422155, now seen corresponding path program 1 times [2018-09-18 11:42:40,976 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:40,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:40,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:40,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:40,977 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:41,292 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:42:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:42:41,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:41,716 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:42:41,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:41,730 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:41,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-18 11:42:42,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:42:42,735 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:42:42,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:42:42,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:42,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:42,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:42,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:42:42,738 INFO L87 Difference]: Start difference. First operand 13757 states and 20300 transitions. Second operand 5 states. [2018-09-18 11:42:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:55,827 INFO L93 Difference]: Finished difference Result 36751 states and 57196 transitions. [2018-09-18 11:42:55,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:42:55,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-09-18 11:42:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:55,924 INFO L225 Difference]: With dead ends: 36751 [2018-09-18 11:42:55,925 INFO L226 Difference]: Without dead ends: 23000 [2018-09-18 11:42:55,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 417 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:42:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23000 states. [2018-09-18 11:42:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23000 to 22633. [2018-09-18 11:42:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22633 states. [2018-09-18 11:42:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22633 states to 22633 states and 32561 transitions. [2018-09-18 11:42:56,560 INFO L78 Accepts]: Start accepts. Automaton has 22633 states and 32561 transitions. Word has length 211 [2018-09-18 11:42:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:56,561 INFO L480 AbstractCegarLoop]: Abstraction has 22633 states and 32561 transitions. [2018-09-18 11:42:56,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22633 states and 32561 transitions. [2018-09-18 11:42:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-18 11:42:56,574 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:56,574 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:56,575 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1600707944, now seen corresponding path program 1 times [2018-09-18 11:42:56,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:56,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:56,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:56,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:56,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:56,898 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:42:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:57,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:57,250 INFO L197 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 [2018-09-18 11:42:57,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:57,267 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:57,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:57,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:57,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:57,989 INFO L197 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 [2018-09-18 11:42:58,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:58,022 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:58,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:58,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:58,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:42:58,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:42:58,631 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:42:58,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:42:58,632 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:42:58,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:42:58,633 INFO L87 Difference]: Start difference. First operand 22633 states and 32561 transitions. Second operand 9 states. [2018-09-18 11:43:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:16,552 INFO L93 Difference]: Finished difference Result 92231 states and 146382 transitions. [2018-09-18 11:43:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 11:43:16,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-09-18 11:43:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:16,852 INFO L225 Difference]: With dead ends: 92231 [2018-09-18 11:43:16,853 INFO L226 Difference]: Without dead ends: 69604 [2018-09-18 11:43:17,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 966 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:43:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69604 states. [2018-09-18 11:43:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69604 to 69292. [2018-09-18 11:43:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69292 states. [2018-09-18 11:43:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69292 states to 69292 states and 96167 transitions. [2018-09-18 11:43:18,674 INFO L78 Accepts]: Start accepts. Automaton has 69292 states and 96167 transitions. Word has length 243 [2018-09-18 11:43:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:18,677 INFO L480 AbstractCegarLoop]: Abstraction has 69292 states and 96167 transitions. [2018-09-18 11:43:18,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:43:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 69292 states and 96167 transitions. [2018-09-18 11:43:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-18 11:43:18,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:18,690 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:43:18,690 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:18,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1137633829, now seen corresponding path program 1 times [2018-09-18 11:43:18,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:18,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:18,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:18,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:18,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:19,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:19,231 INFO L197 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 [2018-09-18 11:43:19,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:19,247 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:19,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:19,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:19,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:19,959 INFO L197 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 [2018-09-18 11:43:19,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:19,976 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:20,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:20,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:20,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:43:20,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:43:20,818 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:43:20,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:43:20,820 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:43:20,820 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:20,821 INFO L87 Difference]: Start difference. First operand 69292 states and 96167 transitions. Second operand 9 states. [2018-09-18 11:43:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:48,317 INFO L93 Difference]: Finished difference Result 182009 states and 305406 transitions. [2018-09-18 11:43:48,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:43:48,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2018-09-18 11:43:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:49,146 INFO L225 Difference]: With dead ends: 182009 [2018-09-18 11:43:49,146 INFO L226 Difference]: Without dead ends: 112723 [2018-09-18 11:43:49,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1020 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:43:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112723 states. [2018-09-18 11:43:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112723 to 112159. [2018-09-18 11:43:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112159 states. [2018-09-18 11:43:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112159 states to 112159 states and 171984 transitions. [2018-09-18 11:43:53,370 INFO L78 Accepts]: Start accepts. Automaton has 112159 states and 171984 transitions. Word has length 256 [2018-09-18 11:43:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:53,370 INFO L480 AbstractCegarLoop]: Abstraction has 112159 states and 171984 transitions. [2018-09-18 11:43:53,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:43:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 112159 states and 171984 transitions. [2018-09-18 11:43:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-09-18 11:43:53,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:53,391 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:43:53,391 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:53,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1383497740, now seen corresponding path program 1 times [2018-09-18 11:43:53,391 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:53,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:53,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:53,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:53,393 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:53,732 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:43:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 133 proven. 154 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-18 11:43:54,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:54,489 INFO L197 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 [2018-09-18 11:43:54,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:54,496 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:54,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-18 11:43:54,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-18 11:43:54,767 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:43:54,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 11:43:54,768 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:54,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:54,769 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:54,769 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:43:54,769 INFO L87 Difference]: Start difference. First operand 112159 states and 171984 transitions. Second operand 3 states. [2018-09-18 11:44:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:03,500 INFO L93 Difference]: Finished difference Result 234072 states and 365622 transitions. [2018-09-18 11:44:03,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:44:03,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 296 [2018-09-18 11:44:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:04,045 INFO L225 Difference]: With dead ends: 234072 [2018-09-18 11:44:04,045 INFO L226 Difference]: Without dead ends: 121919 [2018-09-18 11:44:04,438 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 592 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:44:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121919 states. [2018-09-18 11:44:07,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121919 to 118666. [2018-09-18 11:44:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118666 states. [2018-09-18 11:44:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118666 states to 118666 states and 164251 transitions. [2018-09-18 11:44:07,462 INFO L78 Accepts]: Start accepts. Automaton has 118666 states and 164251 transitions. Word has length 296 [2018-09-18 11:44:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:07,463 INFO L480 AbstractCegarLoop]: Abstraction has 118666 states and 164251 transitions. [2018-09-18 11:44:07,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:44:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 118666 states and 164251 transitions. [2018-09-18 11:44:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-18 11:44:07,484 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:07,484 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:07,485 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:07,485 INFO L82 PathProgramCache]: Analyzing trace with hash -268689900, now seen corresponding path program 1 times [2018-09-18 11:44:07,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:07,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:07,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:07,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:07,486 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 303 proven. 71 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 11:44:07,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:07,910 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:07,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:07,920 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:08,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-18 11:44:08,323 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-18 11:44:08,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:08,511 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:44:08,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:08,528 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:08,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 303 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 11:44:08,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 305 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-18 11:44:09,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:44:09,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:44:09,132 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:44:09,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:44:09,134 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:44:09,134 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:44:09,135 INFO L87 Difference]: Start difference. First operand 118666 states and 164251 transitions. Second operand 9 states. [2018-09-18 11:44:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:33,369 INFO L93 Difference]: Finished difference Result 253776 states and 379701 transitions. [2018-09-18 11:44:33,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:44:33,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 327 [2018-09-18 11:44:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:33,901 INFO L225 Difference]: With dead ends: 253776 [2018-09-18 11:44:33,902 INFO L226 Difference]: Without dead ends: 135116 [2018-09-18 11:44:34,210 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1332 GetRequests, 1305 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:44:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135116 states. [2018-09-18 11:44:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135116 to 134659. [2018-09-18 11:44:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134659 states. [2018-09-18 11:44:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134659 states to 134659 states and 180896 transitions. [2018-09-18 11:44:37,683 INFO L78 Accepts]: Start accepts. Automaton has 134659 states and 180896 transitions. Word has length 327 [2018-09-18 11:44:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:37,684 INFO L480 AbstractCegarLoop]: Abstraction has 134659 states and 180896 transitions. [2018-09-18 11:44:37,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:44:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 134659 states and 180896 transitions. [2018-09-18 11:44:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-18 11:44:37,697 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:37,697 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:37,697 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1074418731, now seen corresponding path program 1 times [2018-09-18 11:44:37,698 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:37,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:37,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:37,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:37,699 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 11:44:38,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:44:38,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:44:38,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:44:38,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:44:38,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:44:38,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:44:38,951 INFO L87 Difference]: Start difference. First operand 134659 states and 180896 transitions. Second operand 3 states. [2018-09-18 11:44:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:50,460 INFO L93 Difference]: Finished difference Result 231551 states and 313022 transitions. [2018-09-18 11:44:50,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:44:50,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2018-09-18 11:44:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:50,738 INFO L225 Difference]: With dead ends: 231551 [2018-09-18 11:44:50,738 INFO L226 Difference]: Without dead ends: 93379 [2018-09-18 11:44:51,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:44:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93379 states. [2018-09-18 11:44:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93379 to 93372. [2018-09-18 11:44:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93372 states. [2018-09-18 11:44:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93372 states to 93372 states and 117029 transitions. [2018-09-18 11:44:52,517 INFO L78 Accepts]: Start accepts. Automaton has 93372 states and 117029 transitions. Word has length 326 [2018-09-18 11:44:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:52,518 INFO L480 AbstractCegarLoop]: Abstraction has 93372 states and 117029 transitions. [2018-09-18 11:44:52,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:44:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 93372 states and 117029 transitions. [2018-09-18 11:44:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-18 11:44:52,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:52,527 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:52,527 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash -543743444, now seen corresponding path program 1 times [2018-09-18 11:44:52,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:52,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:52,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:52,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:52,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-09-18 11:44:53,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:53,486 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:53,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:53,494 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:53,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-09-18 11:44:53,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-09-18 11:44:53,965 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:44:53,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-18 11:44:53,965 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:44:53,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:44:53,966 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:44:53,966 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:44:53,967 INFO L87 Difference]: Start difference. First operand 93372 states and 117029 transitions. Second operand 5 states. [2018-09-18 11:45:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:45:11,818 INFO L93 Difference]: Finished difference Result 198414 states and 248522 transitions. [2018-09-18 11:45:11,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:45:11,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-09-18 11:45:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:45:12,120 INFO L225 Difference]: With dead ends: 198414 [2018-09-18 11:45:12,121 INFO L226 Difference]: Without dead ends: 105048 [2018-09-18 11:45:12,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 663 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:45:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105048 states. [2018-09-18 11:45:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105048 to 104914. [2018-09-18 11:45:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104914 states. [2018-09-18 11:45:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104914 states to 104914 states and 129474 transitions. [2018-09-18 11:45:14,375 INFO L78 Accepts]: Start accepts. Automaton has 104914 states and 129474 transitions. Word has length 333 [2018-09-18 11:45:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:45:14,376 INFO L480 AbstractCegarLoop]: Abstraction has 104914 states and 129474 transitions. [2018-09-18 11:45:14,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:45:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 104914 states and 129474 transitions. [2018-09-18 11:45:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-18 11:45:14,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:45:14,392 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:45:14,392 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:45:14,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1271651219, now seen corresponding path program 1 times [2018-09-18 11:45:14,393 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:45:14,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:14,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:14,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:14,394 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:45:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2018-09-18 11:45:15,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:45:15,281 INFO L197 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 [2018-09-18 11:45:15,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:15,289 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:45:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:15,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:45:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-09-18 11:45:15,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:45:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2018-09-18 11:45:15,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:45:15,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2018-09-18 11:45:15,675 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:45:15,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:45:15,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:45:15,676 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:45:15,677 INFO L87 Difference]: Start difference. First operand 104914 states and 129474 transitions. Second operand 3 states. Received shutdown request... [2018-09-18 11:45:21,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:45:21,385 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:45:21,391 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:45:21,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:45:21 BoogieIcfgContainer [2018-09-18 11:45:21,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:45:21,393 INFO L168 Benchmark]: Toolchain (without parser) took 227745.53 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 372.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,394 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:45:21,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2837.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 324.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,396 INFO L168 Benchmark]: Boogie Preprocessor took 1187.59 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,397 INFO L168 Benchmark]: RCFGBuilder took 10969.71 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 155.2 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 1.6 MB). Peak memory consumption was 744.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,398 INFO L168 Benchmark]: TraceAbstraction took 212416.23 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 914.9 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:21,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2837.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 324.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1187.59 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10969.71 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 155.2 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 1.6 MB). Peak memory consumption was 744.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212416.23 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 914.9 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (104914states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (148679 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 212.3s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 180.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7514 SDtfs, 47232 SDslu, 6354 SDs, 0 SdLazy, 73617 SolverSat, 16602 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 141.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6226 GetRequests, 6099 SyntacticMatches, 29 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134659occurred 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: 16.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 5315 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 5904 NumberOfCodeBlocks, 5904 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 8923 ConstructedInterpolants, 0 QuantifiedInterpolants, 6292089 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 34 InterpolantComputations, 10 PerfectInterpolantSequences, 7867/8646 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-45-21-419.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-45-21-419.csv Completed graceful shutdown