java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:55:23,784 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:55:23,786 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:55:23,798 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:55:23,798 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:55:23,799 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:55:23,801 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:55:23,802 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:55:23,804 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:55:23,805 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:55:23,806 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:55:23,806 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:55:23,807 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:55:23,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:55:23,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:55:23,810 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:55:23,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:55:23,812 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:55:23,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:55:23,816 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:55:23,817 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:55:23,818 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:55:23,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:55:23,824 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:55:23,824 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:55:23,825 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:55:23,826 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:55:23,827 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:55:23,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:55:23,828 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:55:23,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:55:23,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:55:23,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:55:23,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:55:23,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:55:23,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:55:23,832 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 [2018-07-24 13:55:23,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:55:23,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:55:23,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:55:23,857 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:55:23,858 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:55:23,858 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:55:23,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:55:23,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:55:23,859 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:55:23,859 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:55:23,859 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:55:23,860 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:55:23,860 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:55:23,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:55:23,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:55:23,861 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:55:23,861 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:55:23,861 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:55:23,861 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:55:23,862 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:55:23,862 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:55:23,862 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:55:23,862 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:55:23,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:55:23,863 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:55:23,863 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:55:23,863 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:55:23,864 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:55:23,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:55:23,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:55:23,865 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:55:23,865 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:55:23,865 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:55:23,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:55:23,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:55:23,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:55:23,937 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:55:23,937 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:55:23,938 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-07-24 13:55:24,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb5bc2a8/f5277f713d934ef3a8ff04e4bb1e709d/FLAGb38da2120 [2018-07-24 13:55:24,548 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:55:24,552 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-07-24 13:55:24,573 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb5bc2a8/f5277f713d934ef3a8ff04e4bb1e709d/FLAGb38da2120 [2018-07-24 13:55:24,598 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb5bc2a8/f5277f713d934ef3a8ff04e4bb1e709d [2018-07-24 13:55:24,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:55:24,614 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:55:24,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:55:24,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:55:24,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:55:24,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:55:24" (1/1) ... [2018-07-24 13:55:24,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b628f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:24, skipping insertion in model container [2018-07-24 13:55:24,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:55:24" (1/1) ... [2018-07-24 13:55:24,827 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:55:25,118 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:55:25,137 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:55:25,249 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:55:25,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25 WrapperNode [2018-07-24 13:55:25,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:55:25,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:55:25,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:55:25,308 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:55:25,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:55:25,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:55:25,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:55:25,427 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:55:25,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... [2018-07-24 13:55:25,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:55:25,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:55:25,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:55:25,686 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:55:25,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:55:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:55:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:55:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:55:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:55:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:55:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:55:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:55:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:55:29,060 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:55:29,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:55:29 BoogieIcfgContainer [2018-07-24 13:55:29,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:55:29,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:55:29,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:55:29,065 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:55:29,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:55:24" (1/3) ... [2018-07-24 13:55:29,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3405969a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:55:29, skipping insertion in model container [2018-07-24 13:55:29,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:55:25" (2/3) ... [2018-07-24 13:55:29,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3405969a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:55:29, skipping insertion in model container [2018-07-24 13:55:29,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:55:29" (3/3) ... [2018-07-24 13:55:29,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label11_true-unreach-call.c [2018-07-24 13:55:29,080 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:55:29,089 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:55:29,143 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:55:29,144 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:55:29,144 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:55:29,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:55:29,145 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:55:29,145 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:55:29,145 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:55:29,145 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:55:29,145 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:55:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-07-24 13:55:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-24 13:55:29,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:29,185 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:55:29,185 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1604912700, now seen corresponding path program 1 times [2018-07-24 13:55:29,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:29,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:29,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:29,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:29,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:29,671 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:55:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:29,795 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:55:29,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:55:29,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:55:29,802 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:55:29,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:55:29,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:55:29,821 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-07-24 13:55:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:33,425 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-07-24 13:55:33,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:55:33,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-07-24 13:55:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:33,449 INFO L225 Difference]: With dead ends: 574 [2018-07-24 13:55:33,450 INFO L226 Difference]: Without dead ends: 356 [2018-07-24 13:55:33,457 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:55:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-24 13:55:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-24 13:55:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-24 13:55:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-07-24 13:55:33,544 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 68 [2018-07-24 13:55:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:33,545 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-07-24 13:55:33,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:55:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-07-24 13:55:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-24 13:55:33,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:33,555 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:55:33,555 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash 28707380, now seen corresponding path program 1 times [2018-07-24 13:55:33,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:33,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:33,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:33,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:33,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 13:55:33,907 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:33,907 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:55:33,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:33,924 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:34,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:34,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:55:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:34,423 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 13:55:34,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 13:55:34,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:55:34,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:55:34,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:55:34,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 13:55:34,425 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 3 states. [2018-07-24 13:55:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:35,863 INFO L93 Difference]: Finished difference Result 994 states and 1779 transitions. [2018-07-24 13:55:35,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:55:35,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2018-07-24 13:55:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:35,873 INFO L225 Difference]: With dead ends: 994 [2018-07-24 13:55:35,873 INFO L226 Difference]: Without dead ends: 644 [2018-07-24 13:55:35,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 291 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 13:55:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-07-24 13:55:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-07-24 13:55:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-07-24 13:55:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1057 transitions. [2018-07-24 13:55:35,942 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1057 transitions. Word has length 146 [2018-07-24 13:55:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:35,943 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 1057 transitions. [2018-07-24 13:55:35,943 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:55:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1057 transitions. [2018-07-24 13:55:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-24 13:55:35,948 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:35,949 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:55:35,949 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 633419456, now seen corresponding path program 1 times [2018-07-24 13:55:35,949 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:35,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:35,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:35,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:35,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:36,244 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:55:36,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 13:55:36,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:55:36,245 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:55:36,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:55:36,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 13:55:36,246 INFO L87 Difference]: Start difference. First operand 644 states and 1057 transitions. Second operand 5 states. [2018-07-24 13:55:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:39,545 INFO L93 Difference]: Finished difference Result 1767 states and 3000 transitions. [2018-07-24 13:55:39,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:55:39,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-07-24 13:55:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:39,554 INFO L225 Difference]: With dead ends: 1767 [2018-07-24 13:55:39,554 INFO L226 Difference]: Without dead ends: 1129 [2018-07-24 13:55:39,557 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-24 13:55:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2018-07-24 13:55:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1121. [2018-07-24 13:55:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-07-24 13:55:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1840 transitions. [2018-07-24 13:55:39,599 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1840 transitions. Word has length 188 [2018-07-24 13:55:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:39,599 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1840 transitions. [2018-07-24 13:55:39,599 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:55:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1840 transitions. [2018-07-24 13:55:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-24 13:55:39,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:39,606 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 13:55:39,606 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:39,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598705, now seen corresponding path program 1 times [2018-07-24 13:55:39,607 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:39,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:39,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:39,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:39,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:40,329 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:40,329 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 13:55:40,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:40,338 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:40,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:40,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:55:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:40,980 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:40,980 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 13:55:40,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:40,998 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:41,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:41,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:55:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:55:42,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:55:42,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-07-24 13:55:42,134 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:55:42,135 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 13:55:42,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 13:55:42,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-07-24 13:55:42,136 INFO L87 Difference]: Start difference. First operand 1121 states and 1840 transitions. Second operand 14 states. [2018-07-24 13:55:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:52,691 INFO L93 Difference]: Finished difference Result 3544 states and 6887 transitions. [2018-07-24 13:55:52,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 13:55:52,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 259 [2018-07-24 13:55:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:52,720 INFO L225 Difference]: With dead ends: 3544 [2018-07-24 13:55:52,720 INFO L226 Difference]: Without dead ends: 2573 [2018-07-24 13:55:52,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1047 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=783, Invalid=2523, Unknown=0, NotChecked=0, Total=3306 [2018-07-24 13:55:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2018-07-24 13:55:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2282. [2018-07-24 13:55:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2018-07-24 13:55:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3365 transitions. [2018-07-24 13:55:52,858 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3365 transitions. Word has length 259 [2018-07-24 13:55:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:52,858 INFO L471 AbstractCegarLoop]: Abstraction has 2282 states and 3365 transitions. [2018-07-24 13:55:52,859 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 13:55:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3365 transitions. [2018-07-24 13:55:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-24 13:55:52,869 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:52,869 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:55:52,870 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash -220726540, now seen corresponding path program 1 times [2018-07-24 13:55:52,870 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:52,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:52,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:52,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:52,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:55:53,114 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:53,114 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 13:55:53,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:53,121 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:53,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:55:53,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:55:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:55:53,860 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:55:53,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 13:55:53,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:55:53,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:55:53,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:55:53,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:55:53,861 INFO L87 Difference]: Start difference. First operand 2282 states and 3365 transitions. Second operand 5 states. [2018-07-24 13:55:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:55,316 INFO L93 Difference]: Finished difference Result 4477 states and 6980 transitions. [2018-07-24 13:55:55,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:55:55,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-07-24 13:55:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:55,333 INFO L225 Difference]: With dead ends: 4477 [2018-07-24 13:55:55,334 INFO L226 Difference]: Without dead ends: 2345 [2018-07-24 13:55:55,340 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 562 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:55:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2018-07-24 13:55:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2282. [2018-07-24 13:55:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2018-07-24 13:55:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3173 transitions. [2018-07-24 13:55:55,412 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3173 transitions. Word has length 284 [2018-07-24 13:55:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:55,414 INFO L471 AbstractCegarLoop]: Abstraction has 2282 states and 3173 transitions. [2018-07-24 13:55:55,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:55:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3173 transitions. [2018-07-24 13:55:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-24 13:55:55,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:55,425 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:55:55,426 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:55,426 INFO L82 PathProgramCache]: Analyzing trace with hash -745570144, now seen corresponding path program 1 times [2018-07-24 13:55:55,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:55,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:55,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:55,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:55,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:55,759 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:55:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:55:55,904 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:55,904 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:55:55,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:55,947 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:56,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:55:56,194 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:55:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:55:56,386 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:55:56,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 13:55:56,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:55:56,387 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:55:56,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:55:56,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:55:56,388 INFO L87 Difference]: Start difference. First operand 2282 states and 3173 transitions. Second operand 5 states. [2018-07-24 13:55:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:55:58,474 INFO L93 Difference]: Finished difference Result 5486 states and 7866 transitions. [2018-07-24 13:55:58,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 13:55:58,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2018-07-24 13:55:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:55:58,490 INFO L225 Difference]: With dead ends: 5486 [2018-07-24 13:55:58,491 INFO L226 Difference]: Without dead ends: 3354 [2018-07-24 13:55:58,500 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 614 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:55:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2018-07-24 13:55:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3233. [2018-07-24 13:55:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2018-07-24 13:55:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4284 transitions. [2018-07-24 13:55:58,600 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4284 transitions. Word has length 310 [2018-07-24 13:55:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:55:58,600 INFO L471 AbstractCegarLoop]: Abstraction has 3233 states and 4284 transitions. [2018-07-24 13:55:58,600 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:55:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4284 transitions. [2018-07-24 13:55:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-24 13:55:58,618 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:55:58,618 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 13:55:58,618 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:55:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1930668300, now seen corresponding path program 1 times [2018-07-24 13:55:58,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:55:58,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:58,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:58,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:55:58,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:55:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:58,962 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:55:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 189 proven. 154 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 13:55:59,571 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:55:59,571 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 13:55:59,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:55:59,580 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:55:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:55:59,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:55:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:55:59,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:56:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 264 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 13:56:00,273 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:56:00,273 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:56:00,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:56:00,289 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:56:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:56:00,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:56:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:56:01,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:56:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 264 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 13:56:01,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:56:01,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 15 [2018-07-24 13:56:01,781 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:56:01,782 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 13:56:01,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 13:56:01,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:56:01,784 INFO L87 Difference]: Start difference. First operand 3233 states and 4284 transitions. Second operand 11 states. [2018-07-24 13:56:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:56:05,538 INFO L93 Difference]: Finished difference Result 7698 states and 10473 transitions. [2018-07-24 13:56:05,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 13:56:05,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 346 [2018-07-24 13:56:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:56:05,547 INFO L225 Difference]: With dead ends: 7698 [2018-07-24 13:56:05,548 INFO L226 Difference]: Without dead ends: 2242 [2018-07-24 13:56:05,577 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1417 GetRequests, 1384 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2018-07-24 13:56:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2018-07-24 13:56:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1582. [2018-07-24 13:56:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2018-07-24 13:56:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1819 transitions. [2018-07-24 13:56:05,622 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1819 transitions. Word has length 346 [2018-07-24 13:56:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:56:05,622 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 1819 transitions. [2018-07-24 13:56:05,622 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 13:56:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1819 transitions. [2018-07-24 13:56:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-24 13:56:05,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:56:05,632 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 13:56:05,632 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:56:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash -341971068, now seen corresponding path program 1 times [2018-07-24 13:56:05,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:56:05,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:56:05,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:56:05,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:56:05,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:56:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:56:06,775 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 13:56:07,027 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 13:56:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 262 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:56:07,939 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:56:07,939 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:56:07,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:56:07,947 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:56:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:56:08,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:56:12,046 WARN L169 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 179 DAG size of output: 33 [2018-07-24 13:56:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:56:12,375 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:56:12,902 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 13:56:13,013 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 13:56:13,566 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:56:13,977 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 304 [2018-07-24 13:57:20,372 WARN L172 XnfTransformerHelper]: Simplifying conjuction of 22877 disjunctions. This might take some time... [2018-07-24 13:57:20,630 INFO L188 XnfTransformerHelper]: Simplified to conjuction of 22 disjunctions. [2018-07-24 13:57:20,938 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-07-24 13:57:20,942 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,947 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,951 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,955 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,959 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,963 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,967 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,971 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,975 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,979 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,983 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,986 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,990 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,994 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:20,998 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,001 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,005 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,009 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,013 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,017 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,021 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,025 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,029 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,033 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,036 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,040 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,044 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,048 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,052 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,055 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,059 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,063 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,067 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,071 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,076 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,080 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,083 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,087 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,091 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,094 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,098 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,102 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,106 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,110 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,114 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,117 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,121 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,125 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,129 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,133 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,136 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,140 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,144 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,148 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,152 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,155 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,159 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,163 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,167 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,170 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,174 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,178 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,181 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,185 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,189 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,193 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,197 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,200 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,204 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,207 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,211 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,214 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,218 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,221 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,225 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,229 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,233 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,237 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,240 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,244 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,247 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,251 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,254 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,258 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,261 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,265 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,273 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,277 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,281 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,285 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,289 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,292 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,296 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,300 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,304 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,307 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,311 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,314 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,318 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,324 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,327 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,331 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,335 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,339 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,342 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,347 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,351 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:21,355 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 189 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:57:22,864 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:57:22,865 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:57:22,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:57:22,880 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:57:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:57:23,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:57:23,774 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2018-07-24 13:57:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 13:57:24,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:57:24,790 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:24,859 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-07-24 13:57:25,086 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,091 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,095 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,100 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,103 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,107 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,112 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,115 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,120 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,124 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,127 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,131 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,135 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,138 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,142 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,145 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,149 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,152 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,155 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,159 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,163 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,166 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,170 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,173 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,177 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,181 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,184 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,188 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,192 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,195 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,199 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,205 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,215 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,219 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,222 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,226 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,230 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,234 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,238 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,242 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,247 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,251 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,255 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,259 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,263 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,267 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,270 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,274 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,277 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,281 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,284 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,288 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,292 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,295 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,298 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,303 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,306 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,310 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,313 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,318 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,321 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,325 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,329 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,332 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,335 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,339 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,342 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,347 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,351 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,354 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,357 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,361 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,364 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,368 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,371 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,374 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,377 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,381 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,385 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,388 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,392 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,396 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,399 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,402 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,406 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,409 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,412 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,416 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,419 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,422 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,426 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,429 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,432 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,436 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,439 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,442 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,445 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,448 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,452 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,455 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,458 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,462 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,465 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,469 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,472 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,476 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,479 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:25,482 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 13:57:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 189 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:57:26,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:57:26,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8, 8, 8, 8] total 38 [2018-07-24 13:57:26,605 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:57:26,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-24 13:57:26,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-24 13:57:26,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 13:57:26,607 INFO L87 Difference]: Start difference. First operand 1582 states and 1819 transitions. Second operand 26 states. [2018-07-24 13:57:30,666 WARN L169 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2018-07-24 13:57:30,993 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2018-07-24 13:57:35,604 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2018-07-24 13:57:35,949 WARN L169 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-07-24 13:57:38,393 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-07-24 13:57:43,857 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-07-24 13:58:15,518 WARN L169 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2018-07-24 13:58:24,284 WARN L169 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-07-24 13:58:36,126 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-07-24 13:58:45,441 WARN L169 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2018-07-24 13:59:01,863 WARN L169 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 Received shutdown request... [2018-07-24 13:59:15,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-24 13:59:15,214 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 13:59:15,218 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 13:59:15,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:59:15 BoogieIcfgContainer [2018-07-24 13:59:15,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 13:59:15,220 INFO L168 Benchmark]: Toolchain (without parser) took 230607.36 ms. Allocated memory was 1.5 GB in the beginning and 6.1 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -657.3 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,221 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. [2018-07-24 13:59:15,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,223 INFO L168 Benchmark]: Boogie Preprocessor took 257.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -877.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,224 INFO L168 Benchmark]: RCFGBuilder took 3375.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 138.0 MB). Peak memory consumption was 138.0 MB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,225 INFO L168 Benchmark]: TraceAbstraction took 226157.06 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-07-24 13:59:15,229 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 691.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 119.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 257.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -877.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3375.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 138.0 MB). Peak memory consumption was 138.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226157.06 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (1582states) and interpolant automaton (currently 84 states, 26 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 119 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 226.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 135.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 761 SDtfs, 11813 SDslu, 1433 SDs, 0 SdLazy, 16152 SolverSat, 3807 SolverUnsat, 40 SolverUnknown, 0 SolverNotchecked, 110.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5683 GetRequests, 5419 SyntacticMatches, 34 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5589 ImplicationChecksByTransitivity, 31.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3233occurred in iteration=6, 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: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1143 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 87.5s InterpolantComputationTime, 4697 NumberOfCodeBlocks, 4697 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7385 ConstructedInterpolants, 252 QuantifiedInterpolants, 16638692 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4378 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 5449/6959 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/Problem10_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-59-15-248.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_13-59-15-248.csv Completed graceful shutdown