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/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:34:45,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:34:45,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:34:45,590 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:34:45,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:34:45,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:34:45,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:34:45,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:34:45,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:34:45,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:34:45,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:34:45,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:34:45,611 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:34:45,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:34:45,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:34:45,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:34:45,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:34:45,616 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:34:45,618 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:34:45,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:34:45,621 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:34:45,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:34:45,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:34:45,630 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:34:45,631 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:34:45,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:34:45,632 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:34:45,633 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:34:45,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:34:45,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:34:45,649 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:34:45,649 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:34:45,649 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:34:45,649 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:34:45,650 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:34:45,650 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:34:45,650 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:34:45,650 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:34:45,650 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:34:45,651 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:34:45,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:34:45,651 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:34:45,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:34:45,652 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:34:45,652 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:34:45,652 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:34:45,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:34:45,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:34:45,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:34:45,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:34:45,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:34:45,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:34:45,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:34:45,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:34:45,654 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:34:45,654 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:34:45,654 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:34:45,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:34:45,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:34:45,655 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:34:45,655 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:34:45,655 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:34:45,699 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:34:45,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:34:45,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:34:45,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:34:45,719 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:34:45,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-18 11:34:46,077 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e58d8a3/376ff93498f74a11989d944201e246aa/FLAGb2efd3f2a [2018-09-18 11:34:46,514 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:34:46,515 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-18 11:34:46,542 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e58d8a3/376ff93498f74a11989d944201e246aa/FLAGb2efd3f2a [2018-09-18 11:34:46,558 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e58d8a3/376ff93498f74a11989d944201e246aa [2018-09-18 11:34:46,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:34:46,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:34:46,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:34:46,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:34:46,584 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:34:46,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:46,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f8b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46, skipping insertion in model container [2018-09-18 11:34:46,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:46,604 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:34:47,897 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:34:47,915 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:34:48,518 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:34:48,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48 WrapperNode [2018-09-18 11:34:48,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:34:48,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:34:48,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:34:48,761 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:34:48,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:48,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:34:49,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:34:49,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:34:49,041 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:34:49,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... [2018-09-18 11:34:49,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:34:49,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:34:49,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:34:49,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:34:49,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:34:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:34:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:34:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:34:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:34:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:34:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:34:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:34:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:34:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:34:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:34:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:34:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:34:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:34:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:35:03,826 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:35:03,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:03 BoogieIcfgContainer [2018-09-18 11:35:03,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:35:03,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:35:03,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:35:03,832 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:35:03,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:34:46" (1/3) ... [2018-09-18 11:35:03,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:03, skipping insertion in model container [2018-09-18 11:35:03,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:48" (2/3) ... [2018-09-18 11:35:03,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:03, skipping insertion in model container [2018-09-18 11:35:03,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:03" (3/3) ... [2018-09-18 11:35:03,836 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-09-18 11:35:03,847 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:35:03,858 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:35:03,925 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:35:03,926 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:35:03,927 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:35:03,927 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:35:03,927 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:35:03,927 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:35:03,927 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:35:03,927 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:35:03,928 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:35:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:35:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-18 11:35:03,979 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:03,981 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] [2018-09-18 11:35:03,982 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-09-18 11:35:03,990 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:04,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:04,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:04,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:04,047 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:04,540 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:04,656 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:04,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:35:04,656 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:04,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:35:04,679 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:35:04,680 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:04,683 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:35:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:15,015 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:35:15,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:35:15,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-09-18 11:35:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:15,050 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:35:15,050 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:35:15,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:35:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:35:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:35:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-09-18 11:35:15,214 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-09-18 11:35:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:15,215 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-09-18 11:35:15,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:35:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-09-18 11:35:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-18 11:35:15,226 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:15,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:15,229 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:15,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-09-18 11:35:15,230 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:15,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:15,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:15,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:15,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:15,555 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:15,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:15,555 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:15,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:15,558 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:15,558 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:15,559 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-09-18 11:35:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:29,120 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-09-18 11:35:29,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:29,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-09-18 11:35:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:29,153 INFO L225 Difference]: With dead ends: 6330 [2018-09-18 11:35:29,154 INFO L226 Difference]: Without dead ends: 4732 [2018-09-18 11:35:29,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:35:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-09-18 11:35:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-09-18 11:35:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-09-18 11:35:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-09-18 11:35:29,330 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-09-18 11:35:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:29,331 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-09-18 11:35:29,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:35:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-09-18 11:35:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-18 11:35:29,341 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:29,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:29,341 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-09-18 11:35:29,348 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:29,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:29,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:29,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:29,352 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:29,559 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:29,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:35:29,559 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:29,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:35:29,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:35:29,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:35:29,560 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-09-18 11:35:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:38,351 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-09-18 11:35:38,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:35:38,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-09-18 11:35:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:38,416 INFO L225 Difference]: With dead ends: 14300 [2018-09-18 11:35:38,416 INFO L226 Difference]: Without dead ends: 9606 [2018-09-18 11:35:38,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-09-18 11:35:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-09-18 11:35:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-09-18 11:35:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-09-18 11:35:38,841 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 130 [2018-09-18 11:35:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:38,842 INFO L480 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-09-18 11:35:38,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:35:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-09-18 11:35:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-18 11:35:38,845 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:38,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:38,846 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-09-18 11:35:38,846 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:38,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:38,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:38,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:38,848 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:39,343 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:39,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:39,343 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:39,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:39,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:39,344 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:39,345 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-09-18 11:36:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:00,953 INFO L93 Difference]: Finished difference Result 38639 states and 64066 transitions. [2018-09-18 11:36:00,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:36:00,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-09-18 11:36:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:01,099 INFO L225 Difference]: With dead ends: 38639 [2018-09-18 11:36:01,099 INFO L226 Difference]: Without dead ends: 29121 [2018-09-18 11:36:01,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29121 states. [2018-09-18 11:36:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29121 to 28923. [2018-09-18 11:36:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28923 states. [2018-09-18 11:36:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28923 states to 28923 states and 42607 transitions. [2018-09-18 11:36:01,994 INFO L78 Accepts]: Start accepts. Automaton has 28923 states and 42607 transitions. Word has length 153 [2018-09-18 11:36:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:01,995 INFO L480 AbstractCegarLoop]: Abstraction has 28923 states and 42607 transitions. [2018-09-18 11:36:01,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 28923 states and 42607 transitions. [2018-09-18 11:36:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-18 11:36:01,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:02,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:02,000 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:02,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-09-18 11:36:02,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:02,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:02,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:02,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:02,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:02,300 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:02,684 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:02,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:02,685 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:02,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:02,686 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:02,686 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:02,686 INFO L87 Difference]: Start difference. First operand 28923 states and 42607 transitions. Second operand 6 states. [2018-09-18 11:36:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:15,927 INFO L93 Difference]: Finished difference Result 77380 states and 121625 transitions. [2018-09-18 11:36:15,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:15,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-09-18 11:36:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:16,100 INFO L225 Difference]: With dead ends: 77380 [2018-09-18 11:36:16,100 INFO L226 Difference]: Without dead ends: 48463 [2018-09-18 11:36:16,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48463 states. [2018-09-18 11:36:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48463 to 48257. [2018-09-18 11:36:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48257 states. [2018-09-18 11:36:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48257 states to 48257 states and 68604 transitions. [2018-09-18 11:36:17,772 INFO L78 Accepts]: Start accepts. Automaton has 48257 states and 68604 transitions. Word has length 174 [2018-09-18 11:36:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:17,773 INFO L480 AbstractCegarLoop]: Abstraction has 48257 states and 68604 transitions. [2018-09-18 11:36:17,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 48257 states and 68604 transitions. [2018-09-18 11:36:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-18 11:36:17,784 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:17,784 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:36:17,785 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-09-18 11:36:17,786 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:17,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:17,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:17,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:17,787 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:18,056 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:18,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:18,495 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:36:18,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:18,509 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:18,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-18 11:36:19,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:19,690 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:36:19,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:36:19,690 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:19,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:36:19,691 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:36:19,692 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:19,692 INFO L87 Difference]: Start difference. First operand 48257 states and 68604 transitions. Second operand 5 states. [2018-09-18 11:36:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:32,972 INFO L93 Difference]: Finished difference Result 127852 states and 197593 transitions. [2018-09-18 11:36:32,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:36:32,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2018-09-18 11:36:32,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:33,353 INFO L225 Difference]: With dead ends: 127852 [2018-09-18 11:36:33,353 INFO L226 Difference]: Without dead ends: 79601 [2018-09-18 11:36:33,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 482 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:36:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79601 states. [2018-09-18 11:36:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79601 to 79131. [2018-09-18 11:36:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79131 states. [2018-09-18 11:36:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79131 states to 79131 states and 115432 transitions. [2018-09-18 11:36:35,596 INFO L78 Accepts]: Start accepts. Automaton has 79131 states and 115432 transitions. Word has length 244 [2018-09-18 11:36:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:35,596 INFO L480 AbstractCegarLoop]: Abstraction has 79131 states and 115432 transitions. [2018-09-18 11:36:35,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:36:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 79131 states and 115432 transitions. [2018-09-18 11:36:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-18 11:36:35,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:35,609 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:35,609 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:35,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1263067852, now seen corresponding path program 1 times [2018-09-18 11:36:35,610 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:35,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:35,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:35,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:35,611 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:36,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:36,127 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:36:36,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:36,141 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:36,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:37,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:37,282 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:37,282 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:36:37,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:37,310 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:37,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:37,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:38,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:36:38,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:36:38,012 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:36:38,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:36:38,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:36:38,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:36:38,014 INFO L87 Difference]: Start difference. First operand 79131 states and 115432 transitions. Second operand 9 states. [2018-09-18 11:37:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:02,869 INFO L93 Difference]: Finished difference Result 289840 states and 647393 transitions. [2018-09-18 11:37:02,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:37:02,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-09-18 11:37:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:04,000 INFO L225 Difference]: With dead ends: 289840 [2018-09-18 11:37:04,001 INFO L226 Difference]: Without dead ends: 172090 [2018-09-18 11:37:04,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 1000 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:37:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172090 states. [2018-09-18 11:37:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172090 to 167542. [2018-09-18 11:37:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167542 states. [2018-09-18 11:37:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167542 states to 167542 states and 267532 transitions. [2018-09-18 11:37:12,424 INFO L78 Accepts]: Start accepts. Automaton has 167542 states and 267532 transitions. Word has length 250 [2018-09-18 11:37:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:12,425 INFO L480 AbstractCegarLoop]: Abstraction has 167542 states and 267532 transitions. [2018-09-18 11:37:12,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:37:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 167542 states and 267532 transitions. [2018-09-18 11:37:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-18 11:37:12,440 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:12,440 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:37:12,441 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:12,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1811334687, now seen corresponding path program 1 times [2018-09-18 11:37:12,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:12,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:12,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:12,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:12,442 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:12,740 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:37:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 78 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:12,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:12,847 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:37:12,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:12,855 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:12,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:37:13,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:37:13,387 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:37:13,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 11:37:13,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:13,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:37:13,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:37:13,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:37:13,389 INFO L87 Difference]: Start difference. First operand 167542 states and 267532 transitions. Second operand 3 states. [2018-09-18 11:37:23,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:23,679 INFO L93 Difference]: Finished difference Result 341246 states and 579135 transitions. [2018-09-18 11:37:23,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:37:23,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2018-09-18 11:37:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:24,758 INFO L225 Difference]: With dead ends: 341246 [2018-09-18 11:37:24,758 INFO L226 Difference]: Without dead ends: 196726 [2018-09-18 11:37:26,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 598 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:37:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196726 states. [2018-09-18 11:37:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196726 to 196552. [2018-09-18 11:37:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196552 states. [2018-09-18 11:37:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196552 states to 196552 states and 313183 transitions. [2018-09-18 11:37:33,964 INFO L78 Accepts]: Start accepts. Automaton has 196552 states and 313183 transitions. Word has length 299 [2018-09-18 11:37:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:33,965 INFO L480 AbstractCegarLoop]: Abstraction has 196552 states and 313183 transitions. [2018-09-18 11:37:33,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:37:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 196552 states and 313183 transitions. [2018-09-18 11:37:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-09-18 11:37:33,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:33,987 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:37:33,988 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:33,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1090723209, now seen corresponding path program 1 times [2018-09-18 11:37:33,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:33,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:33,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:33,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:33,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:34,315 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:37:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:37:34,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:34,573 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:37:34,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:34,582 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:34,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-18 11:37:34,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:37:35,011 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:37:35,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:37:35,011 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:35,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:37:35,012 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:37:35,012 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:37:35,013 INFO L87 Difference]: Start difference. First operand 196552 states and 313183 transitions. Second operand 5 states. [2018-09-18 11:37:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:49,132 INFO L93 Difference]: Finished difference Result 345345 states and 560595 transitions. [2018-09-18 11:37:49,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:37:49,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2018-09-18 11:37:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:49,716 INFO L225 Difference]: With dead ends: 345345 [2018-09-18 11:37:49,716 INFO L226 Difference]: Without dead ends: 149582 [2018-09-18 11:37:50,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 652 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:37:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149582 states. [2018-09-18 11:37:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149582 to 147855. [2018-09-18 11:37:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147855 states. [2018-09-18 11:37:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147855 states to 147855 states and 203881 transitions. [2018-09-18 11:37:53,876 INFO L78 Accepts]: Start accepts. Automaton has 147855 states and 203881 transitions. Word has length 329 [2018-09-18 11:37:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:53,877 INFO L480 AbstractCegarLoop]: Abstraction has 147855 states and 203881 transitions. [2018-09-18 11:37:53,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:37:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 147855 states and 203881 transitions. [2018-09-18 11:37:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-09-18 11:37:53,915 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:53,915 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:53,915 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:53,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1615734322, now seen corresponding path program 1 times [2018-09-18 11:37:53,916 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:53,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:53,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:53,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:53,917 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-09-18 11:37:54,234 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:37:54,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:37:54,234 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:54,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:37:54,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:37:54,235 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:37:54,235 INFO L87 Difference]: Start difference. First operand 147855 states and 203881 transitions. Second operand 3 states. [2018-09-18 11:38:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:04,230 INFO L93 Difference]: Finished difference Result 307755 states and 429471 transitions. [2018-09-18 11:38:04,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:38:04,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 443 [2018-09-18 11:38:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:04,771 INFO L225 Difference]: With dead ends: 307755 [2018-09-18 11:38:04,771 INFO L226 Difference]: Without dead ends: 160674 [2018-09-18 11:38:05,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:38:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160674 states. [2018-09-18 11:38:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160674 to 153460. [2018-09-18 11:38:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153460 states. [2018-09-18 11:38:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153460 states to 153460 states and 197669 transitions. [2018-09-18 11:38:08,365 INFO L78 Accepts]: Start accepts. Automaton has 153460 states and 197669 transitions. Word has length 443 [2018-09-18 11:38:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:08,366 INFO L480 AbstractCegarLoop]: Abstraction has 153460 states and 197669 transitions. [2018-09-18 11:38:08,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:38:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 153460 states and 197669 transitions. [2018-09-18 11:38:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-09-18 11:38:08,646 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:08,647 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:08,647 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:08,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1482980541, now seen corresponding path program 1 times [2018-09-18 11:38:08,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:08,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:08,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:08,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:08,649 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-18 11:38:10,484 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:10,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:38:10,484 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:10,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:38:10,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:38:10,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:38:10,486 INFO L87 Difference]: Start difference. First operand 153460 states and 197669 transitions. Second operand 4 states. [2018-09-18 11:38:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:21,758 INFO L93 Difference]: Finished difference Result 409750 states and 550228 transitions. [2018-09-18 11:38:21,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:38:21,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 967 [2018-09-18 11:38:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:21,764 INFO L225 Difference]: With dead ends: 409750 [2018-09-18 11:38:21,764 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 11:38:22,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:38:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 11:38:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 11:38:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 11:38:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 11:38:22,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 967 [2018-09-18 11:38:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:22,399 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 11:38:22,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:38:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 11:38:22,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 11:38:22,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 11:38:26,822 WARN L178 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 1 Received shutdown request... [2018-09-18 11:38:26,855 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-18 11:38:26,856 INFO L168 Benchmark]: Toolchain (without parser) took 220286.41 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.7 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,858 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:38:26,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2185.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 279.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,861 INFO L168 Benchmark]: Boogie Preprocessor took 952.26 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 926.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,862 INFO L168 Benchmark]: RCFGBuilder took 13833.83 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 663.9 MB). Peak memory consumption was 663.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,863 INFO L168 Benchmark]: TraceAbstraction took 203027.35 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 4.2 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:38:26,870 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2185.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 279.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 952.26 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 926.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13833.83 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 663.9 MB). Peak memory consumption was 663.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203027.35 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 4.2 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 16. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-38-26-897.csv Completed graceful shutdown