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/Problem15_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:00:29,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:00:29,579 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:00:29,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:00:29,592 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:00:29,594 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:00:29,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:00:29,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:00:29,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:00:29,599 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:00:29,600 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:00:29,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:00:29,601 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:00:29,602 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:00:29,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:00:29,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:00:29,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:00:29,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:00:29,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:00:29,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:00:29,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:00:29,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:00:29,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:00:29,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:00:29,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:00:29,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:00:29,634 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:00:29,635 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:00:29,636 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:00:29,641 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:00:29,641 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:00:29,642 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:00:29,642 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:00:29,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:00:29,643 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:00:29,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:00:29,646 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 12:00:29,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:00:29,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:00:29,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:00:29,662 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:00:29,662 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:00:29,663 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:00:29,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:00:29,663 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:00:29,663 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:00:29,663 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:00:29,664 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:00:29,664 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:00:29,665 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:00:29,665 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:00:29,665 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:00:29,665 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:00:29,665 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:00:29,665 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:00:29,666 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:00:29,666 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:00:29,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:00:29,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:00:29,666 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:00:29,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:00:29,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:00:29,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:00:29,667 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:00:29,667 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:00:29,668 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:00:29,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:00:29,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:00:29,668 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:00:29,668 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:00:29,669 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:00:29,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:00:29,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:00:29,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:00:29,750 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:00:29,750 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:00:29,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-09-18 12:00:30,094 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78baa7a7c/09876d691ad44403b8954e2662584291/FLAG1b41c053a [2018-09-18 12:00:30,452 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:00:30,453 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-09-18 12:00:30,477 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78baa7a7c/09876d691ad44403b8954e2662584291/FLAG1b41c053a [2018-09-18 12:00:30,501 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78baa7a7c/09876d691ad44403b8954e2662584291 [2018-09-18 12:00:30,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:00:30,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:00:30,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:00:30,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:00:30,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:00:30,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:00:30" (1/1) ... [2018-09-18 12:00:30,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7598abde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:30, skipping insertion in model container [2018-09-18 12:00:30,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:00:30" (1/1) ... [2018-09-18 12:00:30,545 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:00:31,475 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:00:31,495 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:00:31,785 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:00:31,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31 WrapperNode [2018-09-18 12:00:31,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:00:31,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:00:31,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:00:31,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:00:31,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:00:32,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:00:32,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:00:32,198 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:00:32,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (1/1) ... [2018-09-18 12:00:32,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:00:32,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:00:32,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:00:32,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:00:32,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (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 12:00:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:00:32,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:00:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:00:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:00:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:00:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:00:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:00:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:00:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:00:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:00:42,803 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:00:42,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:00:42 BoogieIcfgContainer [2018-09-18 12:00:42,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:00:42,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:00:42,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:00:42,808 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:00:42,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:00:30" (1/3) ... [2018-09-18 12:00:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddb9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:00:42, skipping insertion in model container [2018-09-18 12:00:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:00:31" (2/3) ... [2018-09-18 12:00:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddb9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:00:42, skipping insertion in model container [2018-09-18 12:00:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:00:42" (3/3) ... [2018-09-18 12:00:42,813 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label59_true-unreach-call.c [2018-09-18 12:00:42,823 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:00:42,832 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:00:42,889 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:00:42,890 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:00:42,890 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:00:42,890 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:00:42,891 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:00:42,891 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:00:42,891 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:00:42,891 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:00:42,891 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:00:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 12:00:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-18 12:00:42,943 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:42,945 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] [2018-09-18 12:00:42,946 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1120743887, now seen corresponding path program 1 times [2018-09-18 12:00:42,955 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:43,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:43,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:43,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:43,528 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-18 12:00:43,602 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 12:00:43,604 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:00:43,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:00:43,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:00:43,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:00:43,628 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:00:43,628 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:43,631 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-18 12:00:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:50,494 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-09-18 12:00:50,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:00:50,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-18 12:00:50,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:50,526 INFO L225 Difference]: With dead ends: 1558 [2018-09-18 12:00:50,526 INFO L226 Difference]: Without dead ends: 1114 [2018-09-18 12:00:50,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-09-18 12:00:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-09-18 12:00:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-09-18 12:00:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-09-18 12:00:50,678 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 61 [2018-09-18 12:00:50,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:50,679 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-09-18 12:00:50,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:00:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-09-18 12:00:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-18 12:00:50,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:50,691 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, 1, 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 12:00:50,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1471271461, now seen corresponding path program 1 times [2018-09-18 12:00:50,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:50,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:50,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:50,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:50,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:00:50,976 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:00:50,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:00:50,976 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:00:50,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:00:50,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:00:50,979 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:00:50,979 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-09-18 12:01:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:05,822 INFO L93 Difference]: Finished difference Result 2505 states and 4576 transitions. [2018-09-18 12:01:05,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:01:05,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-09-18 12:01:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:05,846 INFO L225 Difference]: With dead ends: 2505 [2018-09-18 12:01:05,846 INFO L226 Difference]: Without dead ends: 1752 [2018-09-18 12:01:05,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:01:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2018-09-18 12:01:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1732. [2018-09-18 12:01:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2018-09-18 12:01:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 3006 transitions. [2018-09-18 12:01:05,956 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 3006 transitions. Word has length 131 [2018-09-18 12:01:05,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:05,956 INFO L480 AbstractCegarLoop]: Abstraction has 1732 states and 3006 transitions. [2018-09-18 12:01:05,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:01:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 3006 transitions. [2018-09-18 12:01:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 12:01:05,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:05,962 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, 1, 1, 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 12:01:05,962 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash -708902120, now seen corresponding path program 1 times [2018-09-18 12:01:05,963 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:05,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:05,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:05,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:05,964 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:06,260 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:01:06,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:01:06,260 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:01:06,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:01:06,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:01:06,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:01:06,261 INFO L87 Difference]: Start difference. First operand 1732 states and 3006 transitions. Second operand 6 states. [2018-09-18 12:01:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:20,562 INFO L93 Difference]: Finished difference Result 5409 states and 10018 transitions. [2018-09-18 12:01:20,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:01:20,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-18 12:01:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:20,599 INFO L225 Difference]: With dead ends: 5409 [2018-09-18 12:01:20,599 INFO L226 Difference]: Without dead ends: 3683 [2018-09-18 12:01:20,623 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:01:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-09-18 12:01:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3591. [2018-09-18 12:01:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2018-09-18 12:01:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5524 transitions. [2018-09-18 12:01:20,782 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5524 transitions. Word has length 132 [2018-09-18 12:01:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:20,782 INFO L480 AbstractCegarLoop]: Abstraction has 3591 states and 5524 transitions. [2018-09-18 12:01:20,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:01:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5524 transitions. [2018-09-18 12:01:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-18 12:01:20,787 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:20,787 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, 1, 1, 1, 1, 1, 1, 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 12:01:20,787 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1451874528, now seen corresponding path program 1 times [2018-09-18 12:01:20,788 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:20,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:20,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:20,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:20,790 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:21,044 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:01:21,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:01:21,044 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:01:21,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:01:21,045 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:01:21,045 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:01:21,045 INFO L87 Difference]: Start difference. First operand 3591 states and 5524 transitions. Second operand 6 states. [2018-09-18 12:01:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:27,656 INFO L93 Difference]: Finished difference Result 10281 states and 17071 transitions. [2018-09-18 12:01:27,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:01:27,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-18 12:01:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:27,703 INFO L225 Difference]: With dead ends: 10281 [2018-09-18 12:01:27,704 INFO L226 Difference]: Without dead ends: 7005 [2018-09-18 12:01:27,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:01:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2018-09-18 12:01:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6950. [2018-09-18 12:01:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6950 states. [2018-09-18 12:01:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 10131 transitions. [2018-09-18 12:01:27,935 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 10131 transitions. Word has length 136 [2018-09-18 12:01:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:27,936 INFO L480 AbstractCegarLoop]: Abstraction has 6950 states and 10131 transitions. [2018-09-18 12:01:27,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:01:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 10131 transitions. [2018-09-18 12:01:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-18 12:01:27,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:27,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:27,942 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1453868313, now seen corresponding path program 1 times [2018-09-18 12:01:27,942 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:27,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:27,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:27,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:27,943 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:28,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:28,722 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 12:01:28,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:28,742 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:28,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:33,072 WARN L178 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 37 [2018-09-18 12:01:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:35,353 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:35,660 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 12:01:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:35,970 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:01:35,970 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-18 12:01:35,971 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:01:35,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:01:35,972 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:01:35,972 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-18 12:01:35,972 INFO L87 Difference]: Start difference. First operand 6950 states and 10131 transitions. Second operand 3 states. [2018-09-18 12:01:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:39,832 INFO L93 Difference]: Finished difference Result 14840 states and 22688 transitions. [2018-09-18 12:01:39,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:01:39,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2018-09-18 12:01:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:39,901 INFO L225 Difference]: With dead ends: 14840 [2018-09-18 12:01:39,901 INFO L226 Difference]: Without dead ends: 8205 [2018-09-18 12:01:39,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 310 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-18 12:01:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2018-09-18 12:01:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8196. [2018-09-18 12:01:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8196 states. [2018-09-18 12:01:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 12346 transitions. [2018-09-18 12:01:40,200 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 12346 transitions. Word has length 157 [2018-09-18 12:01:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:40,200 INFO L480 AbstractCegarLoop]: Abstraction has 8196 states and 12346 transitions. [2018-09-18 12:01:40,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:01:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 12346 transitions. [2018-09-18 12:01:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-18 12:01:40,213 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:40,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:40,214 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1908896947, now seen corresponding path program 1 times [2018-09-18 12:01:40,214 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:40,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:40,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:40,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:40,215 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:40,841 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-18 12:01:41,224 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 12:01:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:41,647 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:01:41,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:01:41,647 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:01:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:01:41,648 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:01:41,648 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:01:41,648 INFO L87 Difference]: Start difference. First operand 8196 states and 12346 transitions. Second operand 6 states. [2018-09-18 12:01:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:53,418 INFO L93 Difference]: Finished difference Result 16778 states and 26326 transitions. [2018-09-18 12:01:53,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:01:53,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-09-18 12:01:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:53,504 INFO L225 Difference]: With dead ends: 16778 [2018-09-18 12:01:53,505 INFO L226 Difference]: Without dead ends: 8897 [2018-09-18 12:01:53,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:01:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8897 states. [2018-09-18 12:01:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8897 to 8745. [2018-09-18 12:01:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8745 states. [2018-09-18 12:01:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 13182 transitions. [2018-09-18 12:01:53,817 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 13182 transitions. Word has length 229 [2018-09-18 12:01:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:53,818 INFO L480 AbstractCegarLoop]: Abstraction has 8745 states and 13182 transitions. [2018-09-18 12:01:53,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:01:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 13182 transitions. [2018-09-18 12:01:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-09-18 12:01:53,842 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:53,842 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:01:53,842 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2118867734, now seen corresponding path program 1 times [2018-09-18 12:01:53,843 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:53,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:53,852 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:54,138 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:01:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:01:54,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:54,562 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 12:01:54,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:54,571 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:54,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 12:01:54,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:01:55,239 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:01:55,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:01:55,240 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:01:55,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:01:55,241 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:01:55,241 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:01:55,241 INFO L87 Difference]: Start difference. First operand 8745 states and 13182 transitions. Second operand 5 states. [2018-09-18 12:02:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:03,735 INFO L93 Difference]: Finished difference Result 23266 states and 37384 transitions. [2018-09-18 12:02:03,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:02:03,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2018-09-18 12:02:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:03,831 INFO L225 Difference]: With dead ends: 23266 [2018-09-18 12:02:03,831 INFO L226 Difference]: Without dead ends: 14835 [2018-09-18 12:02:03,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 525 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:02:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14835 states. [2018-09-18 12:02:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14835 to 13844. [2018-09-18 12:02:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13844 states. [2018-09-18 12:02:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13844 states to 13844 states and 20295 transitions. [2018-09-18 12:02:04,303 INFO L78 Accepts]: Start accepts. Automaton has 13844 states and 20295 transitions. Word has length 265 [2018-09-18 12:02:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:04,303 INFO L480 AbstractCegarLoop]: Abstraction has 13844 states and 20295 transitions. [2018-09-18 12:02:04,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:02:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 13844 states and 20295 transitions. [2018-09-18 12:02:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-18 12:02:04,321 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:04,321 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:02:04,322 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:04,322 INFO L82 PathProgramCache]: Analyzing trace with hash -609418555, now seen corresponding path program 1 times [2018-09-18 12:02:04,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:04,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:04,324 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 109 proven. 89 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 12:02:05,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:05,031 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 12:02:05,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:05,047 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:05,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 12:02:05,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 12:02:06,257 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:02:06,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:02:06,257 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:02:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:02:06,258 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:02:06,258 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:02:06,259 INFO L87 Difference]: Start difference. First operand 13844 states and 20295 transitions. Second operand 5 states. [2018-09-18 12:02:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:10,245 INFO L93 Difference]: Finished difference Result 29493 states and 44518 transitions. [2018-09-18 12:02:10,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:02:10,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2018-09-18 12:02:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:10,269 INFO L225 Difference]: With dead ends: 29493 [2018-09-18 12:02:10,269 INFO L226 Difference]: Without dead ends: 6104 [2018-09-18 12:02:10,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 546 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:02:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2018-09-18 12:02:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 5753. [2018-09-18 12:02:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5753 states. [2018-09-18 12:02:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 6771 transitions. [2018-09-18 12:02:10,483 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 6771 transitions. Word has length 274 [2018-09-18 12:02:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:10,484 INFO L480 AbstractCegarLoop]: Abstraction has 5753 states and 6771 transitions. [2018-09-18 12:02:10,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:02:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 6771 transitions. [2018-09-18 12:02:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-18 12:02:10,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:10,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:10,490 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1233054540, now seen corresponding path program 1 times [2018-09-18 12:02:10,490 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:10,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:10,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:10,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:10,491 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:11,107 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-09-18 12:02:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:11,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:11,518 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 12:02:11,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:11,529 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:11,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:18,144 WARN L178 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-18 12:02:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:18,273 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:19,014 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2018-09-18 12:02:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:20,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:02:20,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-18 12:02:20,066 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:02:20,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:02:20,067 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:02:20,068 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:02:20,068 INFO L87 Difference]: Start difference. First operand 5753 states and 6771 transitions. Second operand 6 states. [2018-09-18 12:02:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:30,464 INFO L93 Difference]: Finished difference Result 15248 states and 17897 transitions. [2018-09-18 12:02:30,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:02:30,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 299 [2018-09-18 12:02:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:30,486 INFO L225 Difference]: With dead ends: 15248 [2018-09-18 12:02:30,486 INFO L226 Difference]: Without dead ends: 9501 [2018-09-18 12:02:30,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:02:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9501 states. [2018-09-18 12:02:30,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9501 to 9491. [2018-09-18 12:02:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9491 states. [2018-09-18 12:02:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9491 states to 9491 states and 11094 transitions. [2018-09-18 12:02:30,658 INFO L78 Accepts]: Start accepts. Automaton has 9491 states and 11094 transitions. Word has length 299 [2018-09-18 12:02:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:30,659 INFO L480 AbstractCegarLoop]: Abstraction has 9491 states and 11094 transitions. [2018-09-18 12:02:30,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:02:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9491 states and 11094 transitions. [2018-09-18 12:02:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-18 12:02:30,666 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:30,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:30,667 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2081764732, now seen corresponding path program 1 times [2018-09-18 12:02:30,668 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:30,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:30,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:30,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:30,669 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:31,030 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:02:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:31,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:31,249 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 12:02:31,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:31,257 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:31,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:31,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:02:31,764 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:02:31,765 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:02:31,765 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:02:31,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:02:31,766 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:02:31,766 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:02:31,766 INFO L87 Difference]: Start difference. First operand 9491 states and 11094 transitions. Second operand 3 states. [2018-09-18 12:02:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:33,243 INFO L93 Difference]: Finished difference Result 18976 states and 22238 transitions. [2018-09-18 12:02:33,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:02:33,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2018-09-18 12:02:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:33,271 INFO L225 Difference]: With dead ends: 18976 [2018-09-18 12:02:33,271 INFO L226 Difference]: Without dead ends: 9491 [2018-09-18 12:02:33,282 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 671 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:02:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2018-09-18 12:02:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9488. [2018-09-18 12:02:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9488 states. [2018-09-18 12:02:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9488 states to 9488 states and 10871 transitions. [2018-09-18 12:02:33,423 INFO L78 Accepts]: Start accepts. Automaton has 9488 states and 10871 transitions. Word has length 336 [2018-09-18 12:02:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:33,424 INFO L480 AbstractCegarLoop]: Abstraction has 9488 states and 10871 transitions. [2018-09-18 12:02:33,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:02:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9488 states and 10871 transitions. [2018-09-18 12:02:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-18 12:02:33,432 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:33,432 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:02:33,433 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -652874039, now seen corresponding path program 1 times [2018-09-18 12:02:33,433 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:33,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:33,434 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:33,768 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-18 12:02:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 108 proven. 87 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:02:33,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:33,966 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 12:02:33,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:33,978 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:34,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 12:02:34,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 108 proven. 87 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:02:35,294 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:02:35,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:02:35,295 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:02:35,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:02:35,296 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:02:35,296 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:02:35,296 INFO L87 Difference]: Start difference. First operand 9488 states and 10871 transitions. Second operand 5 states. [2018-09-18 12:02:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:38,660 INFO L93 Difference]: Finished difference Result 19011 states and 21898 transitions. [2018-09-18 12:02:38,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:02:38,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2018-09-18 12:02:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:38,680 INFO L225 Difference]: With dead ends: 19011 [2018-09-18 12:02:38,680 INFO L226 Difference]: Without dead ends: 9529 [2018-09-18 12:02:38,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 702 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:02:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2018-09-18 12:02:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 9485. [2018-09-18 12:02:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9485 states. [2018-09-18 12:02:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9485 states to 9485 states and 10822 transitions. [2018-09-18 12:02:38,834 INFO L78 Accepts]: Start accepts. Automaton has 9485 states and 10822 transitions. Word has length 354 [2018-09-18 12:02:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:38,834 INFO L480 AbstractCegarLoop]: Abstraction has 9485 states and 10822 transitions. [2018-09-18 12:02:38,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:02:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9485 states and 10822 transitions. [2018-09-18 12:02:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-09-18 12:02:38,857 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:38,857 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:02:38,858 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash -528749018, now seen corresponding path program 1 times [2018-09-18 12:02:38,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:38,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:38,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:38,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:38,860 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 418 proven. 127 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 12:02:40,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:40,636 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:02:40,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:40,650 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:40,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:03:55,325 WARN L178 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 430 DAG size of output: 47 [2018-09-18 12:03:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 451 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:03:55,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:03:56,090 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2018-09-18 12:03:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-09-18 12:03:56,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:03:56,662 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:03:56,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:03:56,681 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:03:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:03:57,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:04:12,917 WARN L178 SmtUtils]: Spent 13.59 s on a formula simplification. DAG size of input: 430 DAG size of output: 46 [2018-09-18 12:04:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 164 proven. 185 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-09-18 12:04:13,299 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:04:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-09-18 12:04:14,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:04:14,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 5, 8, 5] total 22 [2018-09-18 12:04:14,374 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:04:14,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-18 12:04:14,376 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-18 12:04:14,376 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=381, Unknown=1, NotChecked=0, Total=462 [2018-09-18 12:04:14,376 INFO L87 Difference]: Start difference. First operand 9485 states and 10822 transitions. Second operand 19 states. [2018-09-18 12:04:19,407 WARN L178 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 53 DAG size of output: 11 [2018-09-18 12:04:24,694 WARN L178 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2018-09-18 12:04:29,742 WARN L178 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 57 DAG size of output: 14 [2018-09-18 12:04:37,051 WARN L178 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 54 DAG size of output: 11 [2018-09-18 12:04:41,584 WARN L178 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 53 DAG size of output: 11 Received shutdown request... [2018-09-18 12:04:42,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-18 12:04:42,673 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:04:42,677 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:04:42,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:04:42 BoogieIcfgContainer [2018-09-18 12:04:42,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:04:42,678 INFO L168 Benchmark]: Toolchain (without parser) took 252164.93 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 226.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:04:42,680 INFO L168 Benchmark]: CDTParser took 0.19 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 12:04:42,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1406.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:04:42,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:04:42,686 INFO L168 Benchmark]: Boogie Preprocessor took 670.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 888.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:04:42,687 INFO L168 Benchmark]: RCFGBuilder took 9935.44 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 291.4 MB). Peak memory consumption was 291.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:04:42,688 INFO L168 Benchmark]: TraceAbstraction took 239872.91 ms. Allocated memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: 832.6 MB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -907.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:04:42,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1406.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 670.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 888.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9935.44 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 291.4 MB). Peak memory consumption was 291.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239872.91 ms. Allocated memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: 832.6 MB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -907.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (9485states) and FLOYD_HOARE automaton (currently 32 states, 19 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 50 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 239.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 115.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2225 SDtfs, 18185 SDslu, 2044 SDs, 0 SdLazy, 25817 SolverSat, 5540 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 81.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5892 GetRequests, 5728 SyntacticMatches, 29 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 132.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13844occurred in iteration=7, 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: 2.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 2082 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 118.3s InterpolantComputationTime, 5835 NumberOfCodeBlocks, 5835 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8676 ConstructedInterpolants, 304 QuantifiedInterpolants, 18994060 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4263 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 4177/5228 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/Problem15_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-04-42-716.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-04-42-716.csv Completed graceful shutdown