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/Problem18_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:35:48,637 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:35:48,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:35:48,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:35:48,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:35:48,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:35:48,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:35:48,657 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:35:48,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:35:48,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:35:48,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:35:48,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:35:48,661 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:35:48,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:35:48,664 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:35:48,664 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:35:48,665 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:35:48,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:35:48,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:35:48,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:35:48,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:35:48,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:35:48,676 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:35:48,676 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:35:48,677 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:35:48,678 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:35:48,679 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:35:48,679 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:35:48,680 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:35:48,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:35:48,682 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:35:48,683 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:35:48,683 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:35:48,683 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:35:48,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:35:48,685 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:35:48,685 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 12:35:48,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:35:48,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:35:48,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:35:48,718 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:35:48,719 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:35:48,719 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:35:48,719 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:35:48,719 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:35:48,719 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:35:48,720 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:35:48,720 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:35:48,721 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:35:48,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:35:48,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:35:48,722 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:35:48,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:35:48,722 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:35:48,723 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:35:48,723 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:35:48,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:35:48,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:35:48,725 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:35:48,725 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:35:48,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:35:48,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:35:48,726 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:35:48,726 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:35:48,726 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:35:48,726 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:35:48,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:35:48,727 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:35:48,727 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:35:48,727 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:35:48,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:35:48,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:35:48,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:35:48,822 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:35:48,822 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:35:48,823 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-07-24 12:35:49,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03edd312/cc37d5ac76cc42edac2301ade5e046cf/FLAGe08d1b5f8 [2018-07-24 12:35:49,625 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:35:49,626 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-07-24 12:35:49,652 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03edd312/cc37d5ac76cc42edac2301ade5e046cf/FLAGe08d1b5f8 [2018-07-24 12:35:49,668 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03edd312/cc37d5ac76cc42edac2301ade5e046cf [2018-07-24 12:35:49,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:35:49,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:35:49,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:35:49,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:35:49,689 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:35:49,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:35:49" (1/1) ... [2018-07-24 12:35:49,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df7ddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:49, skipping insertion in model container [2018-07-24 12:35:49,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:35:49" (1/1) ... [2018-07-24 12:35:50,004 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:35:50,843 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:35:50,863 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:35:51,773 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:35:51,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51 WrapperNode [2018-07-24 12:35:51,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:35:51,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:35:51,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:35:51,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:35:51,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:35:52,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:35:52,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:35:52,128 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:35:52,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (1/1) ... [2018-07-24 12:35:52,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:35:52,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:35:52,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:35:52,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:35:52,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (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 12:35:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:35:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:35:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:35:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:35:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:35:52,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:35:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:35:52,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:35:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:35:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:35:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:35:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:36:01,859 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:36:01,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:36:01 BoogieIcfgContainer [2018-07-24 12:36:01,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:36:01,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:36:01,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:36:01,865 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:36:01,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:35:49" (1/3) ... [2018-07-24 12:36:01,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cdcd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:36:01, skipping insertion in model container [2018-07-24 12:36:01,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:51" (2/3) ... [2018-07-24 12:36:01,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cdcd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:36:01, skipping insertion in model container [2018-07-24 12:36:01,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:36:01" (3/3) ... [2018-07-24 12:36:01,869 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57_false-unreach-call.c [2018-07-24 12:36:01,880 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:36:01,891 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:36:01,954 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:36:01,955 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:36:01,955 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:36:01,955 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:36:01,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:36:01,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:36:01,956 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:36:01,956 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:36:01,956 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:36:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:36:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 12:36:02,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:02,003 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:02,004 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -992581633, now seen corresponding path program 1 times [2018-07-24 12:36:02,013 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:02,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:02,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:02,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:02,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:02,396 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 12:36:02,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:02,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:36:02,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:02,405 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:36:02,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:36:02,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:36:02,425 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-07-24 12:36:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:14,925 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-07-24 12:36:14,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:36:14,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-24 12:36:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:14,969 INFO L225 Difference]: With dead ends: 2974 [2018-07-24 12:36:14,969 INFO L226 Difference]: Without dead ends: 2193 [2018-07-24 12:36:14,983 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:36:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-07-24 12:36:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-07-24 12:36:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-07-24 12:36:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-07-24 12:36:15,203 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 15 [2018-07-24 12:36:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:15,204 INFO L471 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-07-24 12:36:15,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:36:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-07-24 12:36:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-24 12:36:15,212 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:15,213 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:15,213 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:15,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1668998352, now seen corresponding path program 1 times [2018-07-24 12:36:15,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:15,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:15,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:15,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:15,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:15,588 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:15,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:36:15,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:15,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:36:15,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:36:15,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:36:15,593 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-07-24 12:36:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:26,960 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-07-24 12:36:26,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:36:26,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-07-24 12:36:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:26,993 INFO L225 Difference]: With dead ends: 6600 [2018-07-24 12:36:26,994 INFO L226 Difference]: Without dead ends: 4413 [2018-07-24 12:36:27,002 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:36:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-07-24 12:36:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-07-24 12:36:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-07-24 12:36:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-07-24 12:36:27,161 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 85 [2018-07-24 12:36:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:27,162 INFO L471 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-07-24 12:36:27,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:36:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-07-24 12:36:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-24 12:36:27,170 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:27,170 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:27,173 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1397112335, now seen corresponding path program 1 times [2018-07-24 12:36:27,173 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:27,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:27,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:27,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:27,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:27,495 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:27,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:36:27,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:27,496 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:36:27,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:36:27,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:36:27,497 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-07-24 12:36:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:33,454 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-07-24 12:36:33,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:36:33,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-07-24 12:36:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:33,494 INFO L225 Difference]: With dead ends: 11002 [2018-07-24 12:36:33,495 INFO L226 Difference]: Without dead ends: 6630 [2018-07-24 12:36:33,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:36:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-07-24 12:36:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-07-24 12:36:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-07-24 12:36:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-07-24 12:36:33,691 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 112 [2018-07-24 12:36:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:33,692 INFO L471 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-07-24 12:36:33,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:36:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-07-24 12:36:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-24 12:36:33,707 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:33,708 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:33,708 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash 232374966, now seen corresponding path program 1 times [2018-07-24 12:36:33,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:33,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:33,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:33,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:33,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:36:33,973 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:33,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:36:33,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:33,974 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:36:33,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:36:33,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:36:33,975 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 3 states. [2018-07-24 12:36:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:38,849 INFO L93 Difference]: Finished difference Result 19574 states and 27307 transitions. [2018-07-24 12:36:38,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:36:38,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-07-24 12:36:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:38,899 INFO L225 Difference]: With dead ends: 19574 [2018-07-24 12:36:38,900 INFO L226 Difference]: Without dead ends: 12990 [2018-07-24 12:36:38,930 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:36:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-07-24 12:36:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 12990. [2018-07-24 12:36:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12990 states. [2018-07-24 12:36:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12990 states to 12990 states and 16354 transitions. [2018-07-24 12:36:39,181 INFO L78 Accepts]: Start accepts. Automaton has 12990 states and 16354 transitions. Word has length 192 [2018-07-24 12:36:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:39,182 INFO L471 AbstractCegarLoop]: Abstraction has 12990 states and 16354 transitions. [2018-07-24 12:36:39,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:36:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12990 states and 16354 transitions. [2018-07-24 12:36:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-24 12:36:39,186 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:39,186 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:39,186 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1412185813, now seen corresponding path program 1 times [2018-07-24 12:36:39,187 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:39,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:39,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:39,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:39,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:39,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:39,530 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 12:36:39,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:39,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:39,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:40,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:40,241 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:40,241 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:36:40,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:40,257 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:40,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:40,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:41,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:36:41,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:36:41,189 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:36:41,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:36:41,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:36:41,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:36:41,190 INFO L87 Difference]: Start difference. First operand 12990 states and 16354 transitions. Second operand 9 states. [2018-07-24 12:37:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:13,475 INFO L93 Difference]: Finished difference Result 69035 states and 96654 transitions. [2018-07-24 12:37:13,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:37:13,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2018-07-24 12:37:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:13,714 INFO L225 Difference]: With dead ends: 69035 [2018-07-24 12:37:13,715 INFO L226 Difference]: Without dead ends: 53123 [2018-07-24 12:37:14,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 955 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=509, Invalid=2041, Unknown=0, NotChecked=0, Total=2550 [2018-07-24 12:37:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53123 states. [2018-07-24 12:37:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53123 to 53036. [2018-07-24 12:37:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53036 states. [2018-07-24 12:37:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53036 states to 53036 states and 65319 transitions. [2018-07-24 12:37:15,518 INFO L78 Accepts]: Start accepts. Automaton has 53036 states and 65319 transitions. Word has length 235 [2018-07-24 12:37:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:15,519 INFO L471 AbstractCegarLoop]: Abstraction has 53036 states and 65319 transitions. [2018-07-24 12:37:15,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:37:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 53036 states and 65319 transitions. [2018-07-24 12:37:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-24 12:37:15,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:15,547 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:37:15,547 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:15,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1734082624, now seen corresponding path program 1 times [2018-07-24 12:37:15,548 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:15,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:15,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:15,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:15,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:16,337 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:37:16,795 WARN L169 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:37:17,417 WARN L169 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 12:37:17,999 WARN L169 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-07-24 12:37:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 138 proven. 194 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-07-24 12:37:18,552 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:18,552 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:37:18,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:18,562 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:18,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 502 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 12:37:19,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 225 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-07-24 12:37:19,442 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:19,442 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:37:19,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:19,459 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:20,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 502 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 12:37:20,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 225 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-07-24 12:37:20,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:37:20,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 24 [2018-07-24 12:37:20,531 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:37:20,532 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:37:20,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:37:20,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:37:20,533 INFO L87 Difference]: Start difference. First operand 53036 states and 65319 transitions. Second operand 15 states. [2018-07-24 12:37:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:46,546 INFO L93 Difference]: Finished difference Result 120806 states and 152841 transitions. [2018-07-24 12:37:46,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:37:46,547 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 420 [2018-07-24 12:37:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:46,836 INFO L225 Difference]: With dead ends: 120806 [2018-07-24 12:37:46,836 INFO L226 Difference]: Without dead ends: 63177 [2018-07-24 12:37:47,097 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1749 GetRequests, 1690 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=621, Invalid=3039, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:37:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63177 states. [2018-07-24 12:37:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63177 to 62818. [2018-07-24 12:37:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62818 states. [2018-07-24 12:37:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62818 states to 62818 states and 72222 transitions. [2018-07-24 12:37:48,407 INFO L78 Accepts]: Start accepts. Automaton has 62818 states and 72222 transitions. Word has length 420 [2018-07-24 12:37:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:48,408 INFO L471 AbstractCegarLoop]: Abstraction has 62818 states and 72222 transitions. [2018-07-24 12:37:48,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:37:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 62818 states and 72222 transitions. [2018-07-24 12:37:48,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-24 12:37:48,420 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:48,421 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:48,421 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:48,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1294507143, now seen corresponding path program 1 times [2018-07-24 12:37:48,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:48,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:48,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:48,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:48,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:48,798 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:37:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:37:49,446 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:49,446 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 12:37:49,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:49,800 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:49,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:37:50,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:37:50,859 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:37:50,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-07-24 12:37:50,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:50,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:37:50,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:37:50,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:37:50,862 INFO L87 Difference]: Start difference. First operand 62818 states and 72222 transitions. Second operand 3 states. [2018-07-24 12:37:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:55,070 INFO L93 Difference]: Finished difference Result 137064 states and 159905 transitions. [2018-07-24 12:37:55,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:37:55,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 442 [2018-07-24 12:37:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:55,325 INFO L225 Difference]: With dead ends: 137064 [2018-07-24 12:37:55,326 INFO L226 Difference]: Without dead ends: 74257 [2018-07-24 12:37:55,514 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 887 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:37:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74257 states. [2018-07-24 12:37:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74257 to 74257. [2018-07-24 12:37:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74257 states. [2018-07-24 12:37:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74257 states to 74257 states and 84822 transitions. [2018-07-24 12:37:56,771 INFO L78 Accepts]: Start accepts. Automaton has 74257 states and 84822 transitions. Word has length 442 [2018-07-24 12:37:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:56,772 INFO L471 AbstractCegarLoop]: Abstraction has 74257 states and 84822 transitions. [2018-07-24 12:37:56,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:37:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 74257 states and 84822 transitions. [2018-07-24 12:37:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-07-24 12:37:56,789 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:56,790 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:56,790 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1355755138, now seen corresponding path program 1 times [2018-07-24 12:37:56,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:56,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:56,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:56,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:56,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:57,347 WARN L169 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:37:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 208 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 12:37:58,199 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:58,199 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 12:37:58,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:58,207 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:58,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:37:58,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:37:58,726 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:37:58,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 12:37:58,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:58,727 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:37:58,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:37:58,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:37:58,728 INFO L87 Difference]: Start difference. First operand 74257 states and 84822 transitions. Second operand 3 states. [2018-07-24 12:38:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:02,714 INFO L93 Difference]: Finished difference Result 170752 states and 200114 transitions. [2018-07-24 12:38:02,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:38:02,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 523 [2018-07-24 12:38:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:03,191 INFO L225 Difference]: With dead ends: 170752 [2018-07-24 12:38:03,191 INFO L226 Difference]: Without dead ends: 89687 [2018-07-24 12:38:03,513 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1046 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:38:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89687 states. [2018-07-24 12:38:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89687 to 89687. [2018-07-24 12:38:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89687 states. [2018-07-24 12:38:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89687 states to 89687 states and 102138 transitions. [2018-07-24 12:38:05,759 INFO L78 Accepts]: Start accepts. Automaton has 89687 states and 102138 transitions. Word has length 523 [2018-07-24 12:38:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:05,760 INFO L471 AbstractCegarLoop]: Abstraction has 89687 states and 102138 transitions. [2018-07-24 12:38:05,760 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:38:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 89687 states and 102138 transitions. [2018-07-24 12:38:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-07-24 12:38:05,773 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:05,773 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:05,773 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1139670108, now seen corresponding path program 1 times [2018-07-24 12:38:05,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:05,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:05,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 116 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 12:38:06,461 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:06,461 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:06,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:06,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:06,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:38:06,772 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:38:07,203 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:38:07,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 12:38:07,204 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:07,205 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:38:07,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:38:07,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:38:07,206 INFO L87 Difference]: Start difference. First operand 89687 states and 102138 transitions. Second operand 3 states. [2018-07-24 12:38:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:11,531 INFO L93 Difference]: Finished difference Result 176684 states and 200851 transitions. [2018-07-24 12:38:11,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:38:11,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 526 [2018-07-24 12:38:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:11,746 INFO L225 Difference]: With dead ends: 176684 [2018-07-24 12:38:11,746 INFO L226 Difference]: Without dead ends: 87008 [2018-07-24 12:38:11,966 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1053 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:38:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87008 states. [2018-07-24 12:38:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87008 to 85266. [2018-07-24 12:38:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85266 states. [2018-07-24 12:38:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85266 states to 85266 states and 93446 transitions. [2018-07-24 12:38:13,016 INFO L78 Accepts]: Start accepts. Automaton has 85266 states and 93446 transitions. Word has length 526 [2018-07-24 12:38:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:13,017 INFO L471 AbstractCegarLoop]: Abstraction has 85266 states and 93446 transitions. [2018-07-24 12:38:13,017 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:38:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 85266 states and 93446 transitions. [2018-07-24 12:38:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-07-24 12:38:13,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:13,115 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:13,115 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1656975397, now seen corresponding path program 1 times [2018-07-24 12:38:13,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:13,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:13,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:13,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 329 proven. 240 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 12:38:15,067 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:15,068 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 12:38:15,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:15,078 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:15,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-07-24 12:38:15,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:16,028 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-07-24 12:38:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 24 proven. 236 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-07-24 12:38:17,281 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:38:17,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 5] total 19 [2018-07-24 12:38:17,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:17,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:38:17,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:38:17,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:38:17,283 INFO L87 Difference]: Start difference. First operand 85266 states and 93446 transitions. Second operand 5 states. [2018-07-24 12:38:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:23,062 INFO L93 Difference]: Finished difference Result 176055 states and 193076 transitions. [2018-07-24 12:38:23,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:38:23,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 838 [2018-07-24 12:38:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:23,253 INFO L225 Difference]: With dead ends: 176055 [2018-07-24 12:38:23,254 INFO L226 Difference]: Without dead ends: 96052 [2018-07-24 12:38:23,361 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1673 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:38:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96052 states. [2018-07-24 12:38:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96052 to 96022. [2018-07-24 12:38:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96022 states. [2018-07-24 12:38:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96022 states to 96022 states and 105078 transitions. [2018-07-24 12:38:24,749 INFO L78 Accepts]: Start accepts. Automaton has 96022 states and 105078 transitions. Word has length 838 [2018-07-24 12:38:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:24,749 INFO L471 AbstractCegarLoop]: Abstraction has 96022 states and 105078 transitions. [2018-07-24 12:38:24,749 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:38:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 96022 states and 105078 transitions. [2018-07-24 12:38:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2018-07-24 12:38:24,839 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:24,840 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:24,841 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:24,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1964065243, now seen corresponding path program 1 times [2018-07-24 12:38:24,841 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:24,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:24,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:24,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:24,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 144 proven. 233 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2018-07-24 12:38:25,984 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:25,984 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:25,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:25,992 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:26,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-07-24 12:38:27,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 109 proven. 123 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2018-07-24 12:38:27,793 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:38:27,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-07-24 12:38:27,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:27,794 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:38:27,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:38:27,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:38:27,795 INFO L87 Difference]: Start difference. First operand 96022 states and 105078 transitions. Second operand 3 states. [2018-07-24 12:38:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:31,724 INFO L93 Difference]: Finished difference Result 209111 states and 230197 transitions. [2018-07-24 12:38:31,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:38:31,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1006 [2018-07-24 12:38:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:31,973 INFO L225 Difference]: With dead ends: 209111 [2018-07-24 12:38:31,973 INFO L226 Difference]: Without dead ends: 113803 [2018-07-24 12:38:32,122 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2018 GetRequests, 2011 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:38:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113803 states. [2018-07-24 12:38:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113803 to 110969. [2018-07-24 12:38:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110969 states. [2018-07-24 12:38:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110969 states to 110969 states and 121025 transitions. [2018-07-24 12:38:34,367 INFO L78 Accepts]: Start accepts. Automaton has 110969 states and 121025 transitions. Word has length 1006 [2018-07-24 12:38:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:34,367 INFO L471 AbstractCegarLoop]: Abstraction has 110969 states and 121025 transitions. [2018-07-24 12:38:34,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:38:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 110969 states and 121025 transitions. [2018-07-24 12:38:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2018-07-24 12:38:34,437 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:34,438 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:34,438 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:34,439 INFO L82 PathProgramCache]: Analyzing trace with hash 595473263, now seen corresponding path program 1 times [2018-07-24 12:38:34,440 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:34,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:34,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:34,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:34,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2018-07-24 12:38:35,214 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:38:35,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:38:35,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:35,216 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:38:35,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:38:35,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:38:35,217 INFO L87 Difference]: Start difference. First operand 110969 states and 121025 transitions. Second operand 3 states. [2018-07-24 12:38:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:40,143 INFO L93 Difference]: Finished difference Result 255880 states and 283401 transitions. [2018-07-24 12:38:40,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:38:40,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 998 [2018-07-24 12:38:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:40,445 INFO L225 Difference]: With dead ends: 255880 [2018-07-24 12:38:40,445 INFO L226 Difference]: Without dead ends: 130250 [2018-07-24 12:38:40,666 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:38:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130250 states. [2018-07-24 12:38:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130250 to 128187. [2018-07-24 12:38:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128187 states. [2018-07-24 12:38:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128187 states to 128187 states and 140241 transitions. [2018-07-24 12:38:42,180 INFO L78 Accepts]: Start accepts. Automaton has 128187 states and 140241 transitions. Word has length 998 [2018-07-24 12:38:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:42,181 INFO L471 AbstractCegarLoop]: Abstraction has 128187 states and 140241 transitions. [2018-07-24 12:38:42,181 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:38:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 128187 states and 140241 transitions. [2018-07-24 12:38:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2018-07-24 12:38:42,313 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:42,314 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:42,314 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -385728778, now seen corresponding path program 1 times [2018-07-24 12:38:42,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:42,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:42,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:42,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:42,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:43,454 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:38:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2871 backedges. 199 proven. 2551 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:38:49,587 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:49,587 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:49,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:49,597 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:50,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2871 backedges. 1937 proven. 2 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2018-07-24 12:38:51,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2871 backedges. 837 proven. 252 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2018-07-24 12:38:53,864 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:53,864 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:38:53,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:53,881 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:54,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2871 backedges. 1932 proven. 21 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-07-24 12:38:56,422 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2871 backedges. 837 proven. 252 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2018-07-24 12:38:58,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:38:58,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5, 5, 5, 5] total 27 [2018-07-24 12:38:58,750 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:38:58,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-24 12:38:58,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-24 12:38:58,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-07-24 12:38:58,754 INFO L87 Difference]: Start difference. First operand 128187 states and 140241 transitions. Second operand 25 states. [2018-07-24 12:39:06,053 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-07-24 12:39:10,563 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-07-24 12:39:15,585 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-07-24 12:39:27,727 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-07-24 12:39:31,280 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 26 Received shutdown request... [2018-07-24 12:39:33,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-24 12:39:33,374 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:39:33,380 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:39:33,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:39:33 BoogieIcfgContainer [2018-07-24 12:39:33,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:39:33,382 INFO L168 Benchmark]: Toolchain (without parser) took 223701.81 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -145.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,383 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:39:33,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2250.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,386 INFO L168 Benchmark]: Boogie Preprocessor took 652.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 843.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,387 INFO L168 Benchmark]: RCFGBuilder took 9079.02 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 545.8 MB). Peak memory consumption was 545.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,388 INFO L168 Benchmark]: TraceAbstraction took 211520.03 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 163.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 12:39:33,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2250.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 193.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 652.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 843.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9079.02 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 545.8 MB). Peak memory consumption was 545.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211520.03 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 163.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (128187states) and interpolant automaton (currently 102 states, 25 states before enhancement), while ReachableStatesComputation was computing reachable states (97339 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 211.4s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 159.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5916 SDtfs, 60567 SDslu, 3216 SDs, 0 SdLazy, 95660 SolverSat, 16203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16414 GetRequests, 16090 SyntacticMatches, 27 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7677 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128187occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 7190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 15053 NumberOfCodeBlocks, 15053 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 23007 ConstructedInterpolants, 0 QuantifiedInterpolants, 66966386 SizeOfPredicates, 13 NumberOfNonLiveVariables, 11023 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 35 InterpolantComputations, 13 PerfectInterpolantSequences, 21279/25735 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/Problem18_label57_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-39-33-406.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label57_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-39-33-406.csv Completed graceful shutdown