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_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:38:29,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:38:29,529 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:38:29,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:38:29,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:38:29,546 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:38:29,547 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:38:29,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:38:29,557 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:38:29,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:38:29,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:38:29,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:38:29,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:38:29,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:38:29,568 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:38:29,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:38:29,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:38:29,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:38:29,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:38:29,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:38:29,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:38:29,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:38:29,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:38:29,603 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:38:29,604 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:38:29,606 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:38:29,607 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:38:29,608 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 11:38:29,636 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:38:29,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:38:29,640 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:38:29,640 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:38:29,640 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:38:29,640 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:38:29,641 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:38:29,641 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:38:29,641 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:38:29,641 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:38:29,641 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:38:29,642 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:38:29,643 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:38:29,644 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:38:29,644 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:38:29,644 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:38:29,644 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:38:29,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:38:29,646 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:38:29,646 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:38:29,646 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:38:29,646 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:38:29,646 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:38:29,647 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:38:29,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:38:29,647 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:38:29,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:38:29,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:38:29,647 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:38:29,648 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:38:29,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:38:29,648 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:38:29,648 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:38:29,648 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:38:29,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:38:29,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:38:29,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:38:29,729 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:38:29,729 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:38:29,730 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-09-18 11:38:29,989 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a340759/b166b31b293d4a53a6600355029083df/FLAG805c3fc61 [2018-09-18 11:38:30,510 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:38:30,511 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-09-18 11:38:30,542 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a340759/b166b31b293d4a53a6600355029083df/FLAG805c3fc61 [2018-09-18 11:38:30,559 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a340759/b166b31b293d4a53a6600355029083df [2018-09-18 11:38:30,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:38:30,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:38:30,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:38:30,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:38:30,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:38:30,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:38:30" (1/1) ... [2018-09-18 11:38:30,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e63acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:30, skipping insertion in model container [2018-09-18 11:38:30,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:38:30" (1/1) ... [2018-09-18 11:38:30,605 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:38:32,180 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:38:32,201 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:38:33,086 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:38:33,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33 WrapperNode [2018-09-18 11:38:33,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:38:33,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:38:33,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:38:33,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:38:33,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:33,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:33,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:38:33,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:38:33,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:38:33,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:38:34,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:34,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:34,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:34,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:35,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:35,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:35,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (1/1) ... [2018-09-18 11:38:35,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:38:35,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:38:35,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:38:35,234 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:38:35,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (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 11:38:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:38:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:38:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:38:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:38:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:38:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:38:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:38:35,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:38:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:38:35,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:38:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:38:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:38:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:38:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:38:45,680 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:38:45,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:38:45 BoogieIcfgContainer [2018-09-18 11:38:45,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:38:45,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:38:45,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:38:45,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:38:45,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:38:30" (1/3) ... [2018-09-18 11:38:45,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c37736b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:38:45, skipping insertion in model container [2018-09-18 11:38:45,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:38:33" (2/3) ... [2018-09-18 11:38:45,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c37736b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:38:45, skipping insertion in model container [2018-09-18 11:38:45,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:38:45" (3/3) ... [2018-09-18 11:38:45,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-09-18 11:38:45,697 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:38:45,707 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:38:45,781 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:38:45,782 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:38:45,782 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:38:45,782 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:38:45,782 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:38:45,782 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:38:45,783 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:38:45,783 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:38:45,783 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:38:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:38:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-18 11:38:45,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:45,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:45,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-09-18 11:38:45,867 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:45,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:45,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:45,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:45,916 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:46,371 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:38:46,489 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 11:38:46,492 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:46,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:38:46,493 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:46,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:38:46,516 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:38:46,517 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:38:46,520 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-18 11:38:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:56,014 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-18 11:38:56,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:38:56,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-09-18 11:38:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:56,052 INFO L225 Difference]: With dead ends: 3097 [2018-09-18 11:38:56,053 INFO L226 Difference]: Without dead ends: 1975 [2018-09-18 11:38:56,069 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:38:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-18 11:38:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-18 11:38:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-18 11:38:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-18 11:38:56,299 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 67 [2018-09-18 11:38:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:56,301 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-18 11:38:56,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:38:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-18 11:38:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-18 11:38:56,318 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:56,320 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, 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 11:38:56,320 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash 758431250, now seen corresponding path program 1 times [2018-09-18 11:38:56,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:56,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:56,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:56,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:56,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:56,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:56,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:38:56,741 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:56,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:38:56,955 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:38:56,956 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:38:56,956 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-18 11:39:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:39:17,602 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-09-18 11:39:17,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:39:17,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-09-18 11:39:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:39:17,638 INFO L225 Difference]: With dead ends: 5736 [2018-09-18 11:39:17,639 INFO L226 Difference]: Without dead ends: 3768 [2018-09-18 11:39:17,647 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:39:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-09-18 11:39:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-09-18 11:39:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-09-18 11:39:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-09-18 11:39:17,879 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 143 [2018-09-18 11:39:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:17,880 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-09-18 11:39:17,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:39:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-09-18 11:39:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-18 11:39:17,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:17,893 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, 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] [2018-09-18 11:39:17,893 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2052836206, now seen corresponding path program 1 times [2018-09-18 11:39:17,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:17,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:17,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:17,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:17,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:18,217 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:39:18,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:39:18,217 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:39:18,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:39:18,218 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:39:18,218 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:39:18,219 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-09-18 11:39:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:39:46,563 INFO L93 Difference]: Finished difference Result 13664 states and 21762 transitions. [2018-09-18 11:39:46,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:39:46,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-09-18 11:39:46,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:39:46,620 INFO L225 Difference]: With dead ends: 13664 [2018-09-18 11:39:46,620 INFO L226 Difference]: Without dead ends: 9984 [2018-09-18 11:39:46,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 11:39:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2018-09-18 11:39:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9794. [2018-09-18 11:39:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9794 states. [2018-09-18 11:39:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9794 states to 9794 states and 14502 transitions. [2018-09-18 11:39:46,937 INFO L78 Accepts]: Start accepts. Automaton has 9794 states and 14502 transitions. Word has length 157 [2018-09-18 11:39:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:46,938 INFO L480 AbstractCegarLoop]: Abstraction has 9794 states and 14502 transitions. [2018-09-18 11:39:46,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:39:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9794 states and 14502 transitions. [2018-09-18 11:39:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-09-18 11:39:46,948 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:46,949 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, 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] [2018-09-18 11:39:46,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:46,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2003299502, now seen corresponding path program 1 times [2018-09-18 11:39:46,949 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:46,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:46,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:46,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:46,951 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:47,281 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:39:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:47,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:39:47,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:39:47,675 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:39:47,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:39:47,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:39:47,676 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:39:47,676 INFO L87 Difference]: Start difference. First operand 9794 states and 14502 transitions. Second operand 6 states. [2018-09-18 11:40:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:02,584 INFO L93 Difference]: Finished difference Result 34188 states and 53810 transitions. [2018-09-18 11:40:02,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:40:02,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-09-18 11:40:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:02,700 INFO L225 Difference]: With dead ends: 34188 [2018-09-18 11:40:02,700 INFO L226 Difference]: Without dead ends: 24400 [2018-09-18 11:40:02,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:40:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24400 states. [2018-09-18 11:40:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24400 to 24166. [2018-09-18 11:40:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24166 states. [2018-09-18 11:40:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24166 states to 24166 states and 34073 transitions. [2018-09-18 11:40:03,634 INFO L78 Accepts]: Start accepts. Automaton has 24166 states and 34073 transitions. Word has length 175 [2018-09-18 11:40:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:03,635 INFO L480 AbstractCegarLoop]: Abstraction has 24166 states and 34073 transitions. [2018-09-18 11:40:03,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:40:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 24166 states and 34073 transitions. [2018-09-18 11:40:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-09-18 11:40:03,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:03,660 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, 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, 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 11:40:03,660 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:03,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1822344931, now seen corresponding path program 1 times [2018-09-18 11:40:03,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:03,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:03,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:03,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:03,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:03,983 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:40:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:40:04,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:04,418 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 11:40:04,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:04,439 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:04,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 11:40:04,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 11:40:05,214 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:40:05,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-18 11:40:05,215 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:05,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:40:05,216 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:40:05,216 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:40:05,216 INFO L87 Difference]: Start difference. First operand 24166 states and 34073 transitions. Second operand 3 states. [2018-09-18 11:40:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:09,982 INFO L93 Difference]: Finished difference Result 48308 states and 68297 transitions. [2018-09-18 11:40:09,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:40:09,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2018-09-18 11:40:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:10,081 INFO L225 Difference]: With dead ends: 48308 [2018-09-18 11:40:10,082 INFO L226 Difference]: Without dead ends: 24148 [2018-09-18 11:40:10,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 561 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:40:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24148 states. [2018-09-18 11:40:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24148 to 24148. [2018-09-18 11:40:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24148 states. [2018-09-18 11:40:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24148 states to 24148 states and 34031 transitions. [2018-09-18 11:40:10,765 INFO L78 Accepts]: Start accepts. Automaton has 24148 states and 34031 transitions. Word has length 281 [2018-09-18 11:40:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:10,766 INFO L480 AbstractCegarLoop]: Abstraction has 24148 states and 34031 transitions. [2018-09-18 11:40:10,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:40:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 24148 states and 34031 transitions. [2018-09-18 11:40:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-18 11:40:10,796 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:10,797 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, 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, 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, 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 11:40:10,797 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1365185199, now seen corresponding path program 1 times [2018-09-18 11:40:10,797 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:10,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:10,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:10,799 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:11,186 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:40:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:40:11,666 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:40:11,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:40:11,666 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:11,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:40:11,667 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:40:11,667 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:40:11,668 INFO L87 Difference]: Start difference. First operand 24148 states and 34031 transitions. Second operand 6 states. [2018-09-18 11:40:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:21,573 INFO L93 Difference]: Finished difference Result 57924 states and 89066 transitions. [2018-09-18 11:40:21,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:40:21,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 303 [2018-09-18 11:40:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:21,715 INFO L225 Difference]: With dead ends: 57924 [2018-09-18 11:40:21,716 INFO L226 Difference]: Without dead ends: 33782 [2018-09-18 11:40:21,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:40:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33782 states. [2018-09-18 11:40:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33782 to 33339. [2018-09-18 11:40:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33339 states. [2018-09-18 11:40:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33339 states to 33339 states and 48886 transitions. [2018-09-18 11:40:22,456 INFO L78 Accepts]: Start accepts. Automaton has 33339 states and 48886 transitions. Word has length 303 [2018-09-18 11:40:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:22,457 INFO L480 AbstractCegarLoop]: Abstraction has 33339 states and 48886 transitions. [2018-09-18 11:40:22,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:40:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 33339 states and 48886 transitions. [2018-09-18 11:40:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-18 11:40:22,485 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:22,485 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, 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, 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, 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 11:40:22,486 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:22,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1457038389, now seen corresponding path program 1 times [2018-09-18 11:40:22,486 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:22,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:22,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:22,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:22,494 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:23,076 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:40:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:40:23,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:23,150 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 11:40:23,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:23,161 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:23,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-09-18 11:40:23,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:40:23,771 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:40:23,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:40:23,772 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:23,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:40:23,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:40:23,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:40:23,774 INFO L87 Difference]: Start difference. First operand 33339 states and 48886 transitions. Second operand 5 states. [2018-09-18 11:40:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:37,470 INFO L93 Difference]: Finished difference Result 86177 states and 132069 transitions. [2018-09-18 11:40:37,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:40:37,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-09-18 11:40:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:37,762 INFO L225 Difference]: With dead ends: 86177 [2018-09-18 11:40:37,763 INFO L226 Difference]: Without dead ends: 52844 [2018-09-18 11:40:37,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:40:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52844 states. [2018-09-18 11:40:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52844 to 52605. [2018-09-18 11:40:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52605 states. [2018-09-18 11:40:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52605 states to 52605 states and 78521 transitions. [2018-09-18 11:40:39,458 INFO L78 Accepts]: Start accepts. Automaton has 52605 states and 78521 transitions. Word has length 312 [2018-09-18 11:40:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:39,458 INFO L480 AbstractCegarLoop]: Abstraction has 52605 states and 78521 transitions. [2018-09-18 11:40:39,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:40:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 52605 states and 78521 transitions. [2018-09-18 11:40:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-09-18 11:40:39,504 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:39,505 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, 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, 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 11:40:39,505 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1613540031, now seen corresponding path program 1 times [2018-09-18 11:40:39,506 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:39,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:39,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:39,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:39,507 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:39,802 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:40:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 180 proven. 151 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-18 11:40:39,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:39,959 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 11:40:39,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:39,968 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:40,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-18 11:40:40,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-18 11:40:40,631 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:40:40,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 11:40:40,632 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:40,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:40:40,633 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:40:40,633 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:40:40,633 INFO L87 Difference]: Start difference. First operand 52605 states and 78521 transitions. Second operand 3 states. [2018-09-18 11:40:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:48,764 INFO L93 Difference]: Finished difference Result 126928 states and 198242 transitions. [2018-09-18 11:40:48,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:40:48,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 348 [2018-09-18 11:40:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:49,054 INFO L225 Difference]: With dead ends: 126928 [2018-09-18 11:40:49,054 INFO L226 Difference]: Without dead ends: 74329 [2018-09-18 11:40:49,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 695 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:40:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74329 states. [2018-09-18 11:40:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74329 to 74278. [2018-09-18 11:40:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74278 states. [2018-09-18 11:40:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74278 states to 74278 states and 109093 transitions. [2018-09-18 11:40:50,762 INFO L78 Accepts]: Start accepts. Automaton has 74278 states and 109093 transitions. Word has length 348 [2018-09-18 11:40:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:50,763 INFO L480 AbstractCegarLoop]: Abstraction has 74278 states and 109093 transitions. [2018-09-18 11:40:50,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:40:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 74278 states and 109093 transitions. [2018-09-18 11:40:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-18 11:40:50,822 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:50,823 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, 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, 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] [2018-09-18 11:40:50,823 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1285787736, now seen corresponding path program 1 times [2018-09-18 11:40:50,824 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:50,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:50,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:50,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:50,825 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:51,177 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-09-18 11:40:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:40:51,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:51,816 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:40:51,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:51,827 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:51,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 11:40:52,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:40:52,235 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:40:52,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-18 11:40:52,235 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:52,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:40:52,236 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:40:52,237 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:40:52,237 INFO L87 Difference]: Start difference. First operand 74278 states and 109093 transitions. Second operand 3 states. [2018-09-18 11:41:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:41:01,457 INFO L93 Difference]: Finished difference Result 157788 states and 239238 transitions. [2018-09-18 11:41:01,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:41:01,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 368 [2018-09-18 11:41:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:41:01,734 INFO L225 Difference]: With dead ends: 157788 [2018-09-18 11:41:01,734 INFO L226 Difference]: Without dead ends: 93331 [2018-09-18 11:41:02,431 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:41:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93331 states. [2018-09-18 11:41:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93331 to 93329. [2018-09-18 11:41:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93329 states. [2018-09-18 11:41:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93329 states to 93329 states and 131217 transitions. [2018-09-18 11:41:04,016 INFO L78 Accepts]: Start accepts. Automaton has 93329 states and 131217 transitions. Word has length 368 [2018-09-18 11:41:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:41:04,017 INFO L480 AbstractCegarLoop]: Abstraction has 93329 states and 131217 transitions. [2018-09-18 11:41:04,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:41:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 93329 states and 131217 transitions. [2018-09-18 11:41:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-09-18 11:41:04,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:04,073 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, 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, 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, 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 11:41:04,073 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1520569557, now seen corresponding path program 1 times [2018-09-18 11:41:04,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:04,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:04,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:04,376 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:41:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 180 proven. 148 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 11:41:04,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:04,911 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 11:41:04,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:04,923 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:05,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-09-18 11:41:05,672 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 180 proven. 148 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 11:41:06,226 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:41:06,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:41:06,226 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:06,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:41:06,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:41:06,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:41:06,227 INFO L87 Difference]: Start difference. First operand 93329 states and 131217 transitions. Second operand 5 states. [2018-09-18 11:41:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:41:16,009 INFO L93 Difference]: Finished difference Result 185515 states and 267279 transitions. [2018-09-18 11:41:16,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:41:16,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2018-09-18 11:41:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:41:16,390 INFO L225 Difference]: With dead ends: 185515 [2018-09-18 11:41:16,391 INFO L226 Difference]: Without dead ends: 92192 [2018-09-18 11:41:16,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 808 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:41:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92192 states. [2018-09-18 11:41:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92192 to 88879. [2018-09-18 11:41:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88879 states. [2018-09-18 11:41:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88879 states to 88879 states and 113674 transitions. [2018-09-18 11:41:18,336 INFO L78 Accepts]: Start accepts. Automaton has 88879 states and 113674 transitions. Word has length 407 [2018-09-18 11:41:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:41:18,336 INFO L480 AbstractCegarLoop]: Abstraction has 88879 states and 113674 transitions. [2018-09-18 11:41:18,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:41:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 88879 states and 113674 transitions. [2018-09-18 11:41:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-09-18 11:41:18,372 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:18,373 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, 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, 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] [2018-09-18 11:41:18,373 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:18,374 INFO L82 PathProgramCache]: Analyzing trace with hash 443780300, now seen corresponding path program 1 times [2018-09-18 11:41:18,374 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:18,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:18,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:18,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:18,375 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 258 proven. 74 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:41:19,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:19,483 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:41:19,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:19,491 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:19,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-09-18 11:41:19,881 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 258 proven. 74 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:41:20,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:20,352 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:41:20,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:20,372 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:20,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-09-18 11:41:20,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 258 proven. 74 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:41:21,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:41:21,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 6] total 18 [2018-09-18 11:41:21,080 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:41:21,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-18 11:41:21,081 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-18 11:41:21,082 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:41:21,082 INFO L87 Difference]: Start difference. First operand 88879 states and 113674 transitions. Second operand 12 states. [2018-09-18 11:42:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:00,169 INFO L93 Difference]: Finished difference Result 337712 states and 457940 transitions. [2018-09-18 11:42:00,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-18 11:42:00,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 445 [2018-09-18 11:42:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:01,682 INFO L225 Difference]: With dead ends: 337712 [2018-09-18 11:42:01,682 INFO L226 Difference]: Without dead ends: 234891 [2018-09-18 11:42:01,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1864 GetRequests, 1804 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=788, Invalid=2404, Unknown=0, NotChecked=0, Total=3192 [2018-09-18 11:42:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234891 states. [2018-09-18 11:42:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234891 to 228086. [2018-09-18 11:42:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228086 states. [2018-09-18 11:42:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228086 states to 228086 states and 289832 transitions. [2018-09-18 11:42:06,125 INFO L78 Accepts]: Start accepts. Automaton has 228086 states and 289832 transitions. Word has length 445 [2018-09-18 11:42:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:06,126 INFO L480 AbstractCegarLoop]: Abstraction has 228086 states and 289832 transitions. [2018-09-18 11:42:06,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-18 11:42:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 228086 states and 289832 transitions. [2018-09-18 11:42:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-09-18 11:42:06,178 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:06,179 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, 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, 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, 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 11:42:06,179 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1221055949, now seen corresponding path program 1 times [2018-09-18 11:42:06,180 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:06,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:06,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:06,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:06,181 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 409 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:42:06,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:06,573 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 11:42:06,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:06,581 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:06,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-18 11:42:06,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 180 proven. 178 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-18 11:42:07,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:42:07,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:42:07,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:07,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:07,599 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:07,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:42:07,599 INFO L87 Difference]: Start difference. First operand 228086 states and 289832 transitions. Second operand 5 states. Received shutdown request... [2018-09-18 11:42:20,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:20,566 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:42:20,572 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:42:20,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:42:20 BoogieIcfgContainer [2018-09-18 11:42:20,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:42:20,573 INFO L168 Benchmark]: Toolchain (without parser) took 230000.89 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 1.3 GB in the end (delta: 117.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-18 11:42:20,574 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 11:42:20,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2962.61 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 11:42:20,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 333.36 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: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:42:20,576 INFO L168 Benchmark]: Boogie Preprocessor took 1359.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:42:20,577 INFO L168 Benchmark]: RCFGBuilder took 10447.09 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -29.4 MB). Peak memory consumption was 756.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:42:20,578 INFO L168 Benchmark]: TraceAbstraction took 214890.31 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 906.0 MB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:42:20,587 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 2962.61 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 333.36 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: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1359.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10447.09 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -29.4 MB). Peak memory consumption was 756.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214890.31 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 906.0 MB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (228086states) and FLOYD_HOARE automaton (currently 7 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (185415 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 185.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7546 SDtfs, 49426 SDslu, 5834 SDs, 0 SdLazy, 77463 SolverSat, 16953 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 149.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6330 GetRequests, 6184 SyntacticMatches, 18 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228086occurred in iteration=11, 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: 13.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 11360 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 6566 NumberOfCodeBlocks, 6566 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9621 ConstructedInterpolants, 0 QuantifiedInterpolants, 7962152 SizeOfPredicates, 19 NumberOfNonLiveVariables, 5050 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 28 InterpolantComputations, 13 PerfectInterpolantSequences, 7307/8374 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_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-42-20-609.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-42-20-609.csv Completed graceful shutdown