java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:40:24,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:40:24,712 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:40:24,731 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:40:24,731 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:40:24,733 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:40:24,735 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:40:24,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:40:24,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:40:24,741 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:40:24,742 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:40:24,742 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:40:24,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:40:24,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:40:24,755 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:40:24,756 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:40:24,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:40:24,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:40:24,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:40:24,770 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:40:24,771 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:40:24,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:40:24,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:40:24,777 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:40:24,777 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:40:24,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:40:24,782 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:40:24,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:40:24,784 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:40:24,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:40:24,788 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:40:24,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:40:24,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:40:24,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:40:24,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:40:24,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:40:24,793 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:40:24,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:40:24,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:40:24,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:40:24,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:40:24,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:40:24,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:40:24,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:40:24,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:40:24,823 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:40:24,823 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:40:24,824 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:40:24,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:40:24,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:40:24,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:40:24,826 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:40:24,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:40:24,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:40:24,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:40:24,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:40:24,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:40:24,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:40:24,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:40:24,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:40:24,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:40:24,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:40:24,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:40:24,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:40:24,830 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:40:24,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:40:24,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:40:24,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:40:24,831 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:40:24,831 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:40:24,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:40:24,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:40:24,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:40:24,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:40:24,927 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:40:24,928 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-09-10 11:40:25,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a96601d6/0d56b0df4c25464a8e8c837be2925f9d/FLAGf79f22730 [2018-09-10 11:40:25,622 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:40:25,623 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-09-10 11:40:25,654 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a96601d6/0d56b0df4c25464a8e8c837be2925f9d/FLAGf79f22730 [2018-09-10 11:40:25,676 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a96601d6/0d56b0df4c25464a8e8c837be2925f9d [2018-09-10 11:40:25,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:40:25,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:40:25,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:40:25,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:40:25,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:40:25,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:40:25" (1/1) ... [2018-09-10 11:40:25,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aecc83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:25, skipping insertion in model container [2018-09-10 11:40:25,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:40:25" (1/1) ... [2018-09-10 11:40:25,931 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:40:26,310 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:40:26,331 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:40:26,558 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:40:26,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26 WrapperNode [2018-09-10 11:40:26,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:40:26,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:40:26,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:40:26,639 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:40:26,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:26,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:26,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:40:26,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:40:26,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:40:26,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:40:27,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... [2018-09-10 11:40:27,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:40:27,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:40:27,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:40:27,181 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:40:27,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:40:27,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:40:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:40:27,256 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:40:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:40:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:40:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:40:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:40:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:40:32,376 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:40:32,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:40:32 BoogieIcfgContainer [2018-09-10 11:40:32,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:40:32,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:40:32,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:40:32,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:40:32,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:40:25" (1/3) ... [2018-09-10 11:40:32,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434bdb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:40:32, skipping insertion in model container [2018-09-10 11:40:32,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:26" (2/3) ... [2018-09-10 11:40:32,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434bdb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:40:32, skipping insertion in model container [2018-09-10 11:40:32,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:40:32" (3/3) ... [2018-09-10 11:40:32,386 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label57_true-unreach-call.c [2018-09-10 11:40:32,396 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:40:32,406 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:40:32,463 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:40:32,464 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:40:32,465 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:40:32,465 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:40:32,465 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:40:32,465 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:40:32,466 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:40:32,466 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:40:32,466 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:40:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:40:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-10 11:40:32,508 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:32,509 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:32,510 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:32,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2140032137, now seen corresponding path program 1 times [2018-09-10 11:40:32,519 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:32,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:32,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:32,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:32,575 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:33,018 WARN L175 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:40:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:33,146 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:33,147 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:40:33,147 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:33,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:33,174 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:33,175 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:40:33,177 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-10 11:40:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:35,510 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-09-10 11:40:35,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:40:35,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-09-10 11:40:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:35,536 INFO L225 Difference]: With dead ends: 790 [2018-09-10 11:40:35,536 INFO L226 Difference]: Without dead ends: 495 [2018-09-10 11:40:35,545 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:40:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-10 11:40:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-09-10 11:40:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-09-10 11:40:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-09-10 11:40:35,675 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 53 [2018-09-10 11:40:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:35,676 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-09-10 11:40:35,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:40:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-09-10 11:40:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-10 11:40:35,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:35,691 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:35,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash -98981880, now seen corresponding path program 1 times [2018-09-10 11:40:35,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:35,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:35,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:35,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:35,695 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:35,971 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:35,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:40:35,971 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:35,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:40:35,974 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:40:35,974 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:40:35,974 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-09-10 11:40:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:42,214 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-09-10 11:40:42,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:40:42,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-09-10 11:40:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:42,230 INFO L225 Difference]: With dead ends: 1731 [2018-09-10 11:40:42,231 INFO L226 Difference]: Without dead ends: 1249 [2018-09-10 11:40:42,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:40:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-09-10 11:40:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-09-10 11:40:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-09-10 11:40:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-09-10 11:40:42,314 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 129 [2018-09-10 11:40:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:42,314 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-09-10 11:40:42,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:40:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-09-10 11:40:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-10 11:40:42,326 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:42,326 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:42,326 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1825903031, now seen corresponding path program 1 times [2018-09-10 11:40:42,328 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:42,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:42,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:42,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:42,329 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:42,613 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:42,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:40:42,614 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:42,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:40:42,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:40:42,615 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:40:42,615 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 6 states. [2018-09-10 11:40:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:47,908 INFO L93 Difference]: Finished difference Result 3996 states and 6919 transitions. [2018-09-10 11:40:47,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:40:47,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-10 11:40:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:47,940 INFO L225 Difference]: With dead ends: 3996 [2018-09-10 11:40:47,940 INFO L226 Difference]: Without dead ends: 2970 [2018-09-10 11:40:47,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:40:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2018-09-10 11:40:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2909. [2018-09-10 11:40:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2018-09-10 11:40:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4228 transitions. [2018-09-10 11:40:48,071 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4228 transitions. Word has length 140 [2018-09-10 11:40:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:48,072 INFO L480 AbstractCegarLoop]: Abstraction has 2909 states and 4228 transitions. [2018-09-10 11:40:48,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:40:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4228 transitions. [2018-09-10 11:40:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-10 11:40:48,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:48,081 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:48,081 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 549270797, now seen corresponding path program 1 times [2018-09-10 11:40:48,081 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:48,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:48,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:48,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:48,083 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:48,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:48,993 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:49,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:49,012 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:49,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:49,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:50,016 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:40:50,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-10 11:40:50,017 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:50,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:50,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:50,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:40:50,022 INFO L87 Difference]: Start difference. First operand 2909 states and 4228 transitions. Second operand 3 states. [2018-09-10 11:40:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:52,869 INFO L93 Difference]: Finished difference Result 6626 states and 10031 transitions. [2018-09-10 11:40:52,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:40:52,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2018-09-10 11:40:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:52,893 INFO L225 Difference]: With dead ends: 6626 [2018-09-10 11:40:52,893 INFO L226 Difference]: Without dead ends: 3723 [2018-09-10 11:40:52,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:40:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2018-09-10 11:40:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3525. [2018-09-10 11:40:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2018-09-10 11:40:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5147 transitions. [2018-09-10 11:40:53,013 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5147 transitions. Word has length 185 [2018-09-10 11:40:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:53,013 INFO L480 AbstractCegarLoop]: Abstraction has 3525 states and 5147 transitions. [2018-09-10 11:40:53,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:40:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5147 transitions. [2018-09-10 11:40:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-10 11:40:53,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:53,023 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-09-10 11:40:53,023 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash -398392118, now seen corresponding path program 1 times [2018-09-10 11:40:53,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:53,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:53,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:53,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:53,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 92 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:40:53,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:53,276 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:53,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:53,287 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:53,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 11:40:53,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 92 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:40:53,817 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:40:53,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:40:53,818 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:53,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:40:53,819 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:40:53,819 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:40:53,820 INFO L87 Difference]: Start difference. First operand 3525 states and 5147 transitions. Second operand 5 states. [2018-09-10 11:40:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:58,128 INFO L93 Difference]: Finished difference Result 11370 states and 17541 transitions. [2018-09-10 11:40:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:40:58,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-09-10 11:40:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:58,180 INFO L225 Difference]: With dead ends: 11370 [2018-09-10 11:40:58,180 INFO L226 Difference]: Without dead ends: 7851 [2018-09-10 11:40:58,209 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:40:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2018-09-10 11:40:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 7741. [2018-09-10 11:40:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7741 states. [2018-09-10 11:40:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 11195 transitions. [2018-09-10 11:40:58,516 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 11195 transitions. Word has length 210 [2018-09-10 11:40:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:58,517 INFO L480 AbstractCegarLoop]: Abstraction has 7741 states and 11195 transitions. [2018-09-10 11:40:58,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:40:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 11195 transitions. [2018-09-10 11:40:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-09-10 11:40:58,533 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:58,533 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-09-10 11:40:58,534 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:58,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1720277811, now seen corresponding path program 1 times [2018-09-10 11:40:58,534 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:58,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:58,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:58,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:58,536 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:59,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:59,053 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:59,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:59,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:40:59,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:40:59,469 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:40:59,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-10 11:40:59,469 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:59,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:59,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:59,470 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:40:59,470 INFO L87 Difference]: Start difference. First operand 7741 states and 11195 transitions. Second operand 3 states. [2018-09-10 11:41:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:01,658 INFO L93 Difference]: Finished difference Result 20460 states and 31279 transitions. [2018-09-10 11:41:01,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:41:01,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-09-10 11:41:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:01,739 INFO L225 Difference]: With dead ends: 20460 [2018-09-10 11:41:01,740 INFO L226 Difference]: Without dead ends: 12725 [2018-09-10 11:41:01,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:41:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12725 states. [2018-09-10 11:41:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12725 to 12531. [2018-09-10 11:41:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12531 states. [2018-09-10 11:41:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 17861 transitions. [2018-09-10 11:41:02,194 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 17861 transitions. Word has length 211 [2018-09-10 11:41:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:02,194 INFO L480 AbstractCegarLoop]: Abstraction has 12531 states and 17861 transitions. [2018-09-10 11:41:02,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:41:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 17861 transitions. [2018-09-10 11:41:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-10 11:41:02,214 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:02,214 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-09-10 11:41:02,214 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -511735626, now seen corresponding path program 1 times [2018-09-10 11:41:02,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:02,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:02,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:02,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:02,216 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:41:02,460 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:41:02,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:41:02,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:02,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:41:02,461 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:41:02,461 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:02,461 INFO L87 Difference]: Start difference. First operand 12531 states and 17861 transitions. Second operand 3 states. [2018-09-10 11:41:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:06,404 INFO L93 Difference]: Finished difference Result 26883 states and 40223 transitions. [2018-09-10 11:41:06,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:41:06,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-09-10 11:41:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:06,474 INFO L225 Difference]: With dead ends: 26883 [2018-09-10 11:41:06,474 INFO L226 Difference]: Without dead ends: 14358 [2018-09-10 11:41:06,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14358 states. [2018-09-10 11:41:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14358 to 14356. [2018-09-10 11:41:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14356 states. [2018-09-10 11:41:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 20497 transitions. [2018-09-10 11:41:06,913 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 20497 transitions. Word has length 216 [2018-09-10 11:41:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:06,913 INFO L480 AbstractCegarLoop]: Abstraction has 14356 states and 20497 transitions. [2018-09-10 11:41:06,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:41:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 20497 transitions. [2018-09-10 11:41:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-09-10 11:41:06,946 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:06,947 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-09-10 11:41:06,947 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:06,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1100672111, now seen corresponding path program 1 times [2018-09-10 11:41:06,947 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:06,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:06,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:06,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:06,949 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:07,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:07,529 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:07,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:07,544 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:07,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:08,700 WARN L175 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-09-10 11:41:09,322 WARN L175 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-09-10 11:41:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:09,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:09,689 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-09-10 11:41:09,821 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-10 11:41:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:10,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:10,253 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:10,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:10,270 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:10,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 93 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:10,837 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:11,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:11,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 7, 5] total 19 [2018-09-10 11:41:11,352 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:11,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:41:11,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:41:11,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-09-10 11:41:11,354 INFO L87 Difference]: Start difference. First operand 14356 states and 20497 transitions. Second operand 11 states. [2018-09-10 11:41:16,379 WARN L175 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-09-10 11:41:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:19,234 INFO L93 Difference]: Finished difference Result 33200 states and 51367 transitions. [2018-09-10 11:41:19,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-10 11:41:19,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-09-10 11:41:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:19,315 INFO L225 Difference]: With dead ends: 33200 [2018-09-10 11:41:19,315 INFO L226 Difference]: Without dead ends: 17108 [2018-09-10 11:41:19,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1000 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=597, Invalid=1953, Unknown=0, NotChecked=0, Total=2550 [2018-09-10 11:41:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17108 states. [2018-09-10 11:41:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17108 to 16126. [2018-09-10 11:41:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16126 states. [2018-09-10 11:41:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16126 states to 16126 states and 20148 transitions. [2018-09-10 11:41:19,950 INFO L78 Accepts]: Start accepts. Automaton has 16126 states and 20148 transitions. Word has length 251 [2018-09-10 11:41:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:19,950 INFO L480 AbstractCegarLoop]: Abstraction has 16126 states and 20148 transitions. [2018-09-10 11:41:19,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:41:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16126 states and 20148 transitions. [2018-09-10 11:41:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-10 11:41:19,991 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:19,991 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-09-10 11:41:19,992 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:19,992 INFO L82 PathProgramCache]: Analyzing trace with hash 688980568, now seen corresponding path program 1 times [2018-09-10 11:41:19,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:19,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:19,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:19,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:19,993 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:41:20,613 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:20,613 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:20,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:20,621 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:20,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 11:41:21,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:21,731 WARN L175 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-10 11:41:22,184 WARN L175 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-10 11:41:22,334 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-10 11:41:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:41:22,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:41:22,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-10 11:41:22,813 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:22,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:41:22,814 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:41:22,814 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:41:22,814 INFO L87 Difference]: Start difference. First operand 16126 states and 20148 transitions. Second operand 5 states. [2018-09-10 11:41:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:25,351 INFO L93 Difference]: Finished difference Result 33795 states and 42175 transitions. [2018-09-10 11:41:25,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:41:25,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2018-09-10 11:41:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:25,403 INFO L225 Difference]: With dead ends: 33795 [2018-09-10 11:41:25,403 INFO L226 Difference]: Without dead ends: 17864 [2018-09-10 11:41:25,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:41:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17864 states. [2018-09-10 11:41:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17864 to 16871. [2018-09-10 11:41:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16871 states. [2018-09-10 11:41:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 21085 transitions. [2018-09-10 11:41:25,800 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 21085 transitions. Word has length 294 [2018-09-10 11:41:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:25,800 INFO L480 AbstractCegarLoop]: Abstraction has 16871 states and 21085 transitions. [2018-09-10 11:41:25,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:41:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 21085 transitions. [2018-09-10 11:41:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-10 11:41:25,841 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:25,841 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:41:25,841 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1754982853, now seen corresponding path program 1 times [2018-09-10 11:41:25,842 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:25,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:25,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:25,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:25,843 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:27,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:27,245 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:27,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:27,252 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:27,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:28,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:28,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:28,988 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:29,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:29,005 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:29,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:29,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:29,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:29,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8, 5, 5] total 25 [2018-09-10 11:41:29,896 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:29,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-10 11:41:29,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-10 11:41:29,898 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-09-10 11:41:29,898 INFO L87 Difference]: Start difference. First operand 16871 states and 21085 transitions. Second operand 15 states. [2018-09-10 11:41:30,587 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-09-10 11:41:31,979 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2018-09-10 11:41:32,389 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-09-10 11:41:37,653 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2018-09-10 11:41:39,063 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-09-10 11:41:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:39,507 INFO L93 Difference]: Finished difference Result 36890 states and 46534 transitions. [2018-09-10 11:41:39,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-10 11:41:39,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 337 [2018-09-10 11:41:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:39,562 INFO L225 Difference]: With dead ends: 36890 [2018-09-10 11:41:39,563 INFO L226 Difference]: Without dead ends: 20214 [2018-09-10 11:41:39,606 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1391 GetRequests, 1338 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=682, Invalid=2074, Unknown=0, NotChecked=0, Total=2756 [2018-09-10 11:41:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20214 states. [2018-09-10 11:41:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20214 to 18680. [2018-09-10 11:41:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18680 states. [2018-09-10 11:41:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18680 states to 18680 states and 22609 transitions. [2018-09-10 11:41:39,947 INFO L78 Accepts]: Start accepts. Automaton has 18680 states and 22609 transitions. Word has length 337 [2018-09-10 11:41:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:39,947 INFO L480 AbstractCegarLoop]: Abstraction has 18680 states and 22609 transitions. [2018-09-10 11:41:39,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-10 11:41:39,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18680 states and 22609 transitions. [2018-09-10 11:41:40,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-10 11:41:40,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:40,001 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:41:40,001 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:40,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1884219290, now seen corresponding path program 1 times [2018-09-10 11:41:40,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:40,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:40,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:40,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:40,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 94 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-09-10 11:41:40,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:40,873 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:41:40,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:40,881 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:41,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:44,426 WARN L175 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2018-09-10 11:41:48,535 WARN L175 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-10 11:41:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:49,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:49,558 WARN L175 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 11:41:52,619 WARN L175 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 75 DAG size of output: 7 [2018-09-10 11:41:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 209 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:52,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:52,947 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:52,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:52,963 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:53,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:53,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:53,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:53,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9, 9, 6] total 31 [2018-09-10 11:41:53,977 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:53,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 11:41:53,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 11:41:53,979 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=722, Unknown=4, NotChecked=0, Total=930 [2018-09-10 11:41:53,979 INFO L87 Difference]: Start difference. First operand 18680 states and 22609 transitions. Second operand 17 states. [2018-09-10 11:41:55,171 WARN L175 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-10 11:41:58,790 WARN L175 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-09-10 11:42:05,686 WARN L175 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 36 [2018-09-10 11:42:19,900 WARN L175 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-10 11:42:24,770 WARN L175 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 35 Received shutdown request... [2018-09-10 11:44:42,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-10 11:44:42,815 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:44:42,821 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:44:42,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:44:42 BoogieIcfgContainer [2018-09-10 11:44:42,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:44:42,822 INFO L168 Benchmark]: Toolchain (without parser) took 257135.14 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 199.6 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,823 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:44:42,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 947.79 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.06 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,825 INFO L168 Benchmark]: Boogie Preprocessor took 374.20 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -959.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,826 INFO L168 Benchmark]: RCFGBuilder took 5196.10 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 194.2 MB). Peak memory consumption was 194.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,826 INFO L168 Benchmark]: TraceAbstraction took 250443.74 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:44:42,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 947.79 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 167.06 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 374.20 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -959.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5196.10 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 194.2 MB). Peak memory consumption was 194.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250443.74 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (18680states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement), while ReachableStatesComputation was computing reachable states (30903 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 250.3s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 216.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2375 SDtfs, 16894 SDslu, 2240 SDs, 0 SdLazy, 21936 SolverSat, 6349 SolverUnsat, 141 SolverUnknown, 0 SolverNotchecked, 188.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5811 GetRequests, 5588 SyntacticMatches, 19 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 37.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18680occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 4298 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 5206 NumberOfCodeBlocks, 5206 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7987 ConstructedInterpolants, 25 QuantifiedInterpolants, 16766713 SizeOfPredicates, 39 NumberOfNonLiveVariables, 4818 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 3993/4963 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/Problem11_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-44-42-845.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-44-42-845.csv Completed graceful shutdown