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/Problem16_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:19:12,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:19:12,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:19:12,638 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:19:12,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:19:12,641 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:19:12,642 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:19:12,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:19:12,646 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:19:12,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:19:12,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:19:12,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:19:12,649 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:19:12,650 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:19:12,651 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:19:12,652 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:19:12,652 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:19:12,654 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:19:12,656 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:19:12,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:19:12,659 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:19:12,660 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:19:12,663 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-10 12:19:12,670 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:19:12,670 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:19:12,671 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:19:12,672 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:19:12,672 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 12:19:12,699 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:19:12,699 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:19:12,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:19:12,700 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:19:12,701 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:19:12,701 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:19:12,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:19:12,701 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:19:12,701 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:19:12,702 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:19:12,702 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:19:12,703 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:19:12,704 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:19:12,704 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:19:12,704 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:19:12,704 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:19:12,706 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:19:12,706 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:19:12,706 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:19:12,707 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:19:12,707 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:19:12,707 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:19:12,707 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:19:12,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:19:12,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:19:12,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:19:12,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:19:12,708 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:19:12,709 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:19:12,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:19:12,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:19:12,709 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:19:12,709 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:19:12,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:19:12,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:19:12,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:19:12,785 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:19:12,786 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:19:12,786 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29_true-unreach-call.c [2018-09-10 12:19:13,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e076954a/666adfb936db4939af6b535b22e4fc56/FLAG4292f461e [2018-09-10 12:19:13,506 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:19:13,507 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label29_true-unreach-call.c [2018-09-10 12:19:13,534 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e076954a/666adfb936db4939af6b535b22e4fc56/FLAG4292f461e [2018-09-10 12:19:13,556 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e076954a/666adfb936db4939af6b535b22e4fc56 [2018-09-10 12:19:13,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:19:13,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:19:13,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:19:13,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:19:13,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:19:13,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:19:13" (1/1) ... [2018-09-10 12:19:13,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbc8a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:13, skipping insertion in model container [2018-09-10 12:19:13,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:19:13" (1/1) ... [2018-09-10 12:19:13,824 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:19:14,393 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:19:14,424 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:19:14,745 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:19:14,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14 WrapperNode [2018-09-10 12:19:14,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:19:14,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:19:14,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:19:14,848 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:19:14,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:14,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:19:15,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:19:15,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:19:15,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:19:15,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (1/1) ... [2018-09-10 12:19:15,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:19:15,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:19:15,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:19:15,473 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:19:15,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (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 12:19:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:19:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:19:15,551 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 12:19:15,551 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 12:19:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:19:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:19:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:19:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:19:15,552 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_output2 [2018-09-10 12:19:15,553 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_output2 [2018-09-10 12:19:23,762 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:19:23,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:19:23 BoogieIcfgContainer [2018-09-10 12:19:23,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:19:23,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:19:23,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:19:23,768 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:19:23,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:19:13" (1/3) ... [2018-09-10 12:19:23,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2b1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:19:23, skipping insertion in model container [2018-09-10 12:19:23,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:19:14" (2/3) ... [2018-09-10 12:19:23,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2b1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:19:23, skipping insertion in model container [2018-09-10 12:19:23,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:19:23" (3/3) ... [2018-09-10 12:19:23,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label29_true-unreach-call.c [2018-09-10 12:19:23,780 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:19:23,789 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:19:23,841 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:19:23,842 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:19:23,842 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:19:23,842 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:19:23,842 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:19:23,843 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:19:23,843 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:19:23,843 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:19:23,843 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:19:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-10 12:19:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-10 12:19:23,885 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:23,886 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 12:19:23,887 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 12:19:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1256642313, now seen corresponding path program 1 times [2018-09-10 12:19:23,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:23,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:23,948 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:24,350 WARN L175 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:19:24,416 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 12:19:24,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:19:24,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:19:24,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:19:24,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:19:24,443 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:19:24,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:19:24,447 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-09-10 12:19:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:28,070 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-09-10 12:19:28,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:19:28,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-09-10 12:19:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:28,106 INFO L225 Difference]: With dead ends: 1156 [2018-09-10 12:19:28,106 INFO L226 Difference]: Without dead ends: 744 [2018-09-10 12:19:28,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:19:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-09-10 12:19:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-09-10 12:19:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-10 12:19:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-09-10 12:19:28,223 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 53 [2018-09-10 12:19:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:28,224 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-09-10 12:19:28,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:19:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-09-10 12:19:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-10 12:19:28,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:28,235 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] [2018-09-10 12:19:28,235 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 12:19:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2108027558, now seen corresponding path program 1 times [2018-09-10 12:19:28,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:28,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:28,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:28,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:28,237 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:28,622 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 12:19:28,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:19:28,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:19:28,623 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:19:28,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:19:28,625 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:19:28,626 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:19:28,626 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-09-10 12:19:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:34,444 INFO L93 Difference]: Finished difference Result 2185 states and 3967 transitions. [2018-09-10 12:19:34,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:19:34,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-09-10 12:19:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:34,457 INFO L225 Difference]: With dead ends: 2185 [2018-09-10 12:19:34,457 INFO L226 Difference]: Without dead ends: 1447 [2018-09-10 12:19:34,461 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:19:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2018-09-10 12:19:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1442. [2018-09-10 12:19:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2018-09-10 12:19:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2383 transitions. [2018-09-10 12:19:34,523 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2383 transitions. Word has length 161 [2018-09-10 12:19:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:34,524 INFO L480 AbstractCegarLoop]: Abstraction has 1442 states and 2383 transitions. [2018-09-10 12:19:34,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:19:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2383 transitions. [2018-09-10 12:19:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-10 12:19:34,543 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:34,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:19:34,544 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 12:19:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2107506605, now seen corresponding path program 1 times [2018-09-10 12:19:34,544 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:34,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:34,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:34,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:34,546 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 92 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:19:34,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:34,890 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 12:19:34,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:34,900 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:35,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 12:19:35,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 92 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:19:36,024 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:19:36,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:19:36,025 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:19:36,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:19:36,026 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:19:36,027 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:19:36,027 INFO L87 Difference]: Start difference. First operand 1442 states and 2383 transitions. Second operand 5 states. [2018-09-10 12:19:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:43,321 INFO L93 Difference]: Finished difference Result 5457 states and 8975 transitions. [2018-09-10 12:19:43,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:19:43,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-09-10 12:19:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:43,353 INFO L225 Difference]: With dead ends: 5457 [2018-09-10 12:19:43,354 INFO L226 Difference]: Without dead ends: 4021 [2018-09-10 12:19:43,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:19:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2018-09-10 12:19:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3999. [2018-09-10 12:19:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2018-09-10 12:19:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5628 transitions. [2018-09-10 12:19:43,508 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5628 transitions. Word has length 277 [2018-09-10 12:19:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:43,509 INFO L480 AbstractCegarLoop]: Abstraction has 3999 states and 5628 transitions. [2018-09-10 12:19:43,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:19:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5628 transitions. [2018-09-10 12:19:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-10 12:19:43,523 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:43,523 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:19:43,523 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 12:19:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 127498075, now seen corresponding path program 1 times [2018-09-10 12:19:43,524 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:43,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:43,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:43,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:43,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 144 proven. 232 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:19:43,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:43,968 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 12:19:43,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:43,984 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:44,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 12:19:44,354 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 242 proven. 107 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 12:19:44,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:44,765 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:19:44,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:44,783 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:45,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 12:19:45,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 242 proven. 107 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 12:19:45,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:19:45,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 12:19:45,562 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:19:45,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:19:45,563 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:19:45,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:19:45,567 INFO L87 Difference]: Start difference. First operand 3999 states and 5628 transitions. Second operand 9 states. [2018-09-10 12:19:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:58,611 INFO L93 Difference]: Finished difference Result 11046 states and 16300 transitions. [2018-09-10 12:19:58,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-10 12:19:58,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 378 [2018-09-10 12:19:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:58,660 INFO L225 Difference]: With dead ends: 11046 [2018-09-10 12:19:58,660 INFO L226 Difference]: Without dead ends: 7053 [2018-09-10 12:19:58,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1563 GetRequests, 1524 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2018-09-10 12:19:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2018-09-10 12:19:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 6988. [2018-09-10 12:19:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6988 states. [2018-09-10 12:19:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 9146 transitions. [2018-09-10 12:19:58,910 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 9146 transitions. Word has length 378 [2018-09-10 12:19:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:58,910 INFO L480 AbstractCegarLoop]: Abstraction has 6988 states and 9146 transitions. [2018-09-10 12:19:58,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:19:58,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 9146 transitions. [2018-09-10 12:19:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2018-09-10 12:19:58,949 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:58,950 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:58,950 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 12:19:58,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1499143405, now seen corresponding path program 1 times [2018-09-10 12:19:58,951 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:58,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:58,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:58,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:58,952 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 582 proven. 107 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2018-09-10 12:20:00,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:00,177 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 12:20:00,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:00,185 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:00,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 945 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-10 12:20:00,938 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 582 proven. 107 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2018-09-10 12:20:01,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:01,530 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 12:20:01,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:01,548 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:02,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 945 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-10 12:20:02,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 582 proven. 107 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2018-09-10 12:20:03,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:20:03,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:20:03,484 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:20:03,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:20:03,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:20:03,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:20:03,487 INFO L87 Difference]: Start difference. First operand 6988 states and 9146 transitions. Second operand 9 states. [2018-09-10 12:20:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:09,803 INFO L93 Difference]: Finished difference Result 14680 states and 19999 transitions. [2018-09-10 12:20:09,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 12:20:09,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 734 [2018-09-10 12:20:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:09,839 INFO L225 Difference]: With dead ends: 14680 [2018-09-10 12:20:09,839 INFO L226 Difference]: Without dead ends: 7698 [2018-09-10 12:20:09,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2952 GetRequests, 2932 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-10 12:20:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7698 states. [2018-09-10 12:20:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7698 to 7687. [2018-09-10 12:20:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7687 states. [2018-09-10 12:20:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 9849 transitions. [2018-09-10 12:20:10,061 INFO L78 Accepts]: Start accepts. Automaton has 7687 states and 9849 transitions. Word has length 734 [2018-09-10 12:20:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:10,063 INFO L480 AbstractCegarLoop]: Abstraction has 7687 states and 9849 transitions. [2018-09-10 12:20:10,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:20:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7687 states and 9849 transitions. [2018-09-10 12:20:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-09-10 12:20:10,087 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:10,088 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:20:10,088 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 12:20:10,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2631846, now seen corresponding path program 1 times [2018-09-10 12:20:10,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:10,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:10,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:10,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:10,090 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-09-10 12:20:10,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:10,892 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 12:20:10,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:10,901 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:11,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-09-10 12:20:11,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-09-10 12:20:12,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:12,055 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:20:12,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:12,075 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:12,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-09-10 12:20:12,903 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-09-10 12:20:13,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:20:13,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 12:20:13,364 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:20:13,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:20:13,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:20:13,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:20:13,366 INFO L87 Difference]: Start difference. First operand 7687 states and 9849 transitions. Second operand 9 states. [2018-09-10 12:20:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:28,327 INFO L93 Difference]: Finished difference Result 23562 states and 31690 transitions. [2018-09-10 12:20:28,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-10 12:20:28,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 742 [2018-09-10 12:20:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:28,453 INFO L225 Difference]: With dead ends: 23562 [2018-09-10 12:20:28,453 INFO L226 Difference]: Without dead ends: 14121 [2018-09-10 12:20:28,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3041 GetRequests, 2988 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2018-09-10 12:20:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2018-09-10 12:20:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 14075. [2018-09-10 12:20:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14075 states. [2018-09-10 12:20:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14075 states to 14075 states and 15924 transitions. [2018-09-10 12:20:29,081 INFO L78 Accepts]: Start accepts. Automaton has 14075 states and 15924 transitions. Word has length 742 [2018-09-10 12:20:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:29,084 INFO L480 AbstractCegarLoop]: Abstraction has 14075 states and 15924 transitions. [2018-09-10 12:20:29,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:20:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14075 states and 15924 transitions. [2018-09-10 12:20:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2018-09-10 12:20:29,135 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:29,135 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:29,136 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 12:20:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1476445498, now seen corresponding path program 1 times [2018-09-10 12:20:29,136 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:29,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:29,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:29,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:29,138 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2018-09-10 12:20:29,908 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:20:29,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:20:29,908 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:20:29,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:20:29,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:20:29,909 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:20:29,909 INFO L87 Difference]: Start difference. First operand 14075 states and 15924 transitions. Second operand 4 states. [2018-09-10 12:20:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:32,766 INFO L93 Difference]: Finished difference Result 28144 states and 31903 transitions. [2018-09-10 12:20:32,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:20:32,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 908 [2018-09-10 12:20:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:32,856 INFO L225 Difference]: With dead ends: 28144 [2018-09-10 12:20:32,856 INFO L226 Difference]: Without dead ends: 14075 [2018-09-10 12:20:32,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:20:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14075 states. [2018-09-10 12:20:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14075 to 14073. [2018-09-10 12:20:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14073 states. [2018-09-10 12:20:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14073 states to 14073 states and 15450 transitions. [2018-09-10 12:20:33,249 INFO L78 Accepts]: Start accepts. Automaton has 14073 states and 15450 transitions. Word has length 908 [2018-09-10 12:20:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:33,251 INFO L480 AbstractCegarLoop]: Abstraction has 14073 states and 15450 transitions. [2018-09-10 12:20:33,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:20:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14073 states and 15450 transitions. [2018-09-10 12:20:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-09-10 12:20:33,307 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:33,308 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:20:33,308 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 12:20:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash -754223525, now seen corresponding path program 1 times [2018-09-10 12:20:33,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:33,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:33,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:33,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:33,310 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:33,942 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:20:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 1152 proven. 476 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2018-09-10 12:20:35,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:35,840 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:20:35,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:35,847 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:36,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 1943 trivial. 0 not checked. [2018-09-10 12:20:36,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 1943 trivial. 0 not checked. [2018-09-10 12:20:37,299 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:20:37,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-10 12:20:37,300 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:20:37,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:20:37,301 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:20:37,301 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:20:37,302 INFO L87 Difference]: Start difference. First operand 14073 states and 15450 transitions. Second operand 3 states. [2018-09-10 12:20:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:39,937 INFO L93 Difference]: Finished difference Result 27788 states and 30515 transitions. [2018-09-10 12:20:39,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:20:39,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 980 [2018-09-10 12:20:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:39,995 INFO L225 Difference]: With dead ends: 27788 [2018-09-10 12:20:39,996 INFO L226 Difference]: Without dead ends: 13721 [2018-09-10 12:20:40,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1975 GetRequests, 1962 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:20:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2018-09-10 12:20:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 13441. [2018-09-10 12:20:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13441 states. [2018-09-10 12:20:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13441 states to 13441 states and 14518 transitions. [2018-09-10 12:20:40,310 INFO L78 Accepts]: Start accepts. Automaton has 13441 states and 14518 transitions. Word has length 980 [2018-09-10 12:20:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:40,312 INFO L480 AbstractCegarLoop]: Abstraction has 13441 states and 14518 transitions. [2018-09-10 12:20:40,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:20:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13441 states and 14518 transitions. [2018-09-10 12:20:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-09-10 12:20:40,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:40,348 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:40,348 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 12:20:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash -257393108, now seen corresponding path program 1 times [2018-09-10 12:20:40,349 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:40,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:40,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:40,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:40,350 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 976 proven. 2 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2018-09-10 12:20:41,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:41,782 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 12:20:41,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:41,791 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:42,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 976 proven. 2 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2018-09-10 12:20:42,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 976 proven. 2 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2018-09-10 12:20:43,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:43,604 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 12:20:43,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:43,619 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:44,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 976 proven. 2 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2018-09-10 12:20:44,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 976 proven. 2 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2018-09-10 12:20:45,475 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:20:45,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:20:45,476 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:20:45,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:20:45,477 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:20:45,477 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:20:45,478 INFO L87 Difference]: Start difference. First operand 13441 states and 14518 transitions. Second operand 9 states. [2018-09-10 12:20:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:51,260 INFO L93 Difference]: Finished difference Result 29869 states and 32114 transitions. [2018-09-10 12:20:51,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 12:20:51,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1017 [2018-09-10 12:20:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:51,301 INFO L225 Difference]: With dead ends: 29869 [2018-09-10 12:20:51,301 INFO L226 Difference]: Without dead ends: 11636 [2018-09-10 12:20:51,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4094 GetRequests, 4068 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-10 12:20:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2018-09-10 12:20:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 11509. [2018-09-10 12:20:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11509 states. [2018-09-10 12:20:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11509 states to 11509 states and 11982 transitions. [2018-09-10 12:20:51,541 INFO L78 Accepts]: Start accepts. Automaton has 11509 states and 11982 transitions. Word has length 1017 [2018-09-10 12:20:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:51,542 INFO L480 AbstractCegarLoop]: Abstraction has 11509 states and 11982 transitions. [2018-09-10 12:20:51,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:20:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11509 states and 11982 transitions. [2018-09-10 12:20:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-09-10 12:20:51,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:51,570 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:20:51,570 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 12:20:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1932999191, now seen corresponding path program 1 times [2018-09-10 12:20:51,571 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:51,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:51,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:51,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:51,572 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 322 proven. 576 refuted. 0 times theorem prover too weak. 2067 trivial. 0 not checked. [2018-09-10 12:20:52,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:52,919 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:20:52,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:52,928 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:53,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2018-09-10 12:20:54,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 322 proven. 576 refuted. 0 times theorem prover too weak. 2067 trivial. 0 not checked. [2018-09-10 12:20:54,883 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:20:54,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-10 12:20:54,884 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:20:54,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:20:54,885 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:20:54,885 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:20:54,886 INFO L87 Difference]: Start difference. First operand 11509 states and 11982 transitions. Second operand 5 states. [2018-09-10 12:20:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:58,379 INFO L93 Difference]: Finished difference Result 34682 states and 36247 transitions. [2018-09-10 12:20:58,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:20:58,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1128 [2018-09-10 12:20:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:58,459 INFO L225 Difference]: With dead ends: 34682 [2018-09-10 12:20:58,459 INFO L226 Difference]: Without dead ends: 23809 [2018-09-10 12:20:58,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2265 GetRequests, 2253 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:20:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23809 states. [2018-09-10 12:20:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23809 to 21620. [2018-09-10 12:20:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21620 states. [2018-09-10 12:20:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21620 states to 21620 states and 22564 transitions. [2018-09-10 12:20:58,850 INFO L78 Accepts]: Start accepts. Automaton has 21620 states and 22564 transitions. Word has length 1128 [2018-09-10 12:20:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:58,851 INFO L480 AbstractCegarLoop]: Abstraction has 21620 states and 22564 transitions. [2018-09-10 12:20:58,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:20:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 21620 states and 22564 transitions. [2018-09-10 12:20:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1276 [2018-09-10 12:20:58,905 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:58,906 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:58,906 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 12:20:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash -820955423, now seen corresponding path program 1 times [2018-09-10 12:20:58,907 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:58,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:58,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:58,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:58,908 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 926 proven. 392 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2018-09-10 12:21:00,510 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:00,510 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:21:00,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:00,519 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:00,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 2598 proven. 2 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2018-09-10 12:21:01,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 926 proven. 392 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2018-09-10 12:21:02,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:02,773 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:21:02,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:02,788 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:03,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 2598 proven. 2 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2018-09-10 12:21:04,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 926 proven. 392 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2018-09-10 12:21:05,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:21:05,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:21:05,088 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:21:05,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:21:05,091 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:21:05,092 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:21:05,092 INFO L87 Difference]: Start difference. First operand 21620 states and 22564 transitions. Second operand 9 states. [2018-09-10 12:21:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:21:10,443 INFO L93 Difference]: Finished difference Result 41421 states and 43504 transitions. [2018-09-10 12:21:10,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:21:10,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1275 [2018-09-10 12:21:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:21:10,510 INFO L225 Difference]: With dead ends: 41421 [2018-09-10 12:21:10,511 INFO L226 Difference]: Without dead ends: 22131 [2018-09-10 12:21:10,708 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5122 GetRequests, 5099 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:21:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22131 states. [2018-09-10 12:21:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22131 to 21622. [2018-09-10 12:21:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21622 states. [2018-09-10 12:21:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21622 states to 21622 states and 22400 transitions. [2018-09-10 12:21:11,017 INFO L78 Accepts]: Start accepts. Automaton has 21622 states and 22400 transitions. Word has length 1275 [2018-09-10 12:21:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:21:11,018 INFO L480 AbstractCegarLoop]: Abstraction has 21622 states and 22400 transitions. [2018-09-10 12:21:11,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:21:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21622 states and 22400 transitions. [2018-09-10 12:21:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2018-09-10 12:21:11,065 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:21:11,066 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:11,066 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:21:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash 872665486, now seen corresponding path program 1 times [2018-09-10 12:21:11,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:21:11,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:21:11,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:11,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:21:11,068 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:21:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:12,043 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 12:21:12,257 WARN L175 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:21:12,605 WARN L175 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-10 12:21:12,845 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-10 12:21:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3564 backedges. 1148 proven. 287 refuted. 0 times theorem prover too weak. 2129 trivial. 0 not checked. [2018-09-10 12:21:15,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:15,835 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:21:15,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:15,842 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:16,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3564 backedges. 1810 proven. 2 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2018-09-10 12:21:17,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3564 backedges. 399 proven. 1665 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2018-09-10 12:21:20,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:20,308 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:21:20,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:20,330 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:21,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3564 backedges. 2431 proven. 2 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2018-09-10 12:21:22,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3564 backedges. 854 proven. 297 refuted. 0 times theorem prover too weak. 2413 trivial. 0 not checked. [2018-09-10 12:21:24,035 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:21:24,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 5, 5] total 28 [2018-09-10 12:21:24,036 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:21:24,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:21:24,038 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:21:24,038 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2018-09-10 12:21:24,038 INFO L87 Difference]: Start difference. First operand 21622 states and 22400 transitions. Second operand 18 states. [2018-09-10 12:21:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:21:37,441 INFO L93 Difference]: Finished difference Result 46050 states and 47653 transitions. [2018-09-10 12:21:37,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 12:21:37,441 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1338 [2018-09-10 12:21:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:21:37,496 INFO L225 Difference]: With dead ends: 46050 [2018-09-10 12:21:37,496 INFO L226 Difference]: Without dead ends: 23856 [2018-09-10 12:21:37,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5419 GetRequests, 5357 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=661, Invalid=2999, Unknown=0, NotChecked=0, Total=3660 [2018-09-10 12:21:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23856 states. [2018-09-10 12:21:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23856 to 22398. [2018-09-10 12:21:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22398 states. [2018-09-10 12:21:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22398 states to 22398 states and 23166 transitions. [2018-09-10 12:21:37,827 INFO L78 Accepts]: Start accepts. Automaton has 22398 states and 23166 transitions. Word has length 1338 [2018-09-10 12:21:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:21:37,827 INFO L480 AbstractCegarLoop]: Abstraction has 22398 states and 23166 transitions. [2018-09-10 12:21:37,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:21:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 22398 states and 23166 transitions. [2018-09-10 12:21:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2018-09-10 12:21:37,869 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:21:37,870 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:21:37,871 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:21:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1301078650, now seen corresponding path program 1 times [2018-09-10 12:21:37,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:21:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:21:37,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:21:37,872 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:21:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:38,976 WARN L175 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:21:39,268 WARN L175 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-10 12:21:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4156 backedges. 1067 proven. 110 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2018-09-10 12:21:40,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:40,845 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:21:40,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:40,858 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:41,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4156 backedges. 2748 proven. 6 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2018-09-10 12:21:42,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4156 backedges. 1624 proven. 361 refuted. 0 times theorem prover too weak. 2171 trivial. 0 not checked. [2018-09-10 12:21:44,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:21:44,488 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:21:44,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:21:44,504 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:21:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:21:45,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:21:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4156 backedges. 1472 proven. 872 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2018-09-10 12:21:46,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:21:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4156 backedges. 1476 proven. 2 refuted. 0 times theorem prover too weak. 2678 trivial. 0 not checked. [2018-09-10 12:21:49,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:21:49,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 7, 5] total 25 [2018-09-10 12:21:49,296 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:21:49,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 12:21:49,298 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 12:21:49,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-09-10 12:21:49,298 INFO L87 Difference]: Start difference. First operand 22398 states and 23166 transitions. Second operand 13 states. [2018-09-10 12:22:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:22:02,928 INFO L93 Difference]: Finished difference Result 45443 states and 47027 transitions. [2018-09-10 12:22:02,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-10 12:22:02,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1394 [2018-09-10 12:22:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:22:02,984 INFO L225 Difference]: With dead ends: 45443 [2018-09-10 12:22:02,984 INFO L226 Difference]: Without dead ends: 26771 [2018-09-10 12:22:03,024 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5634 GetRequests, 5580 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2018-09-10 12:22:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26771 states. [2018-09-10 12:22:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26771 to 25069. [2018-09-10 12:22:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25069 states. [2018-09-10 12:22:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25069 states to 25069 states and 25887 transitions. [2018-09-10 12:22:03,303 INFO L78 Accepts]: Start accepts. Automaton has 25069 states and 25887 transitions. Word has length 1394 [2018-09-10 12:22:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:22:03,304 INFO L480 AbstractCegarLoop]: Abstraction has 25069 states and 25887 transitions. [2018-09-10 12:22:03,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-10 12:22:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 25069 states and 25887 transitions. [2018-09-10 12:22:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2018-09-10 12:22:03,335 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:22:03,336 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:22:03,336 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:22:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1935372283, now seen corresponding path program 1 times [2018-09-10 12:22:03,337 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:22:03,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:03,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:03,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:03,338 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:22:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 1161 proven. 287 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-10 12:22:06,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:22:06,274 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:22:06,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:06,282 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:22:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:06,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:22:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 2370 proven. 2 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-09-10 12:22:07,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:22:07,983 WARN L175 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 12:22:08,204 WARN L175 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 12:22:08,981 WARN L175 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-09-10 12:22:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 1161 proven. 287 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-10 12:22:12,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:22:12,106 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:22:12,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:12,122 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:22:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:13,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:22:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 2368 proven. 30 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2018-09-10 12:22:14,222 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:22:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 1161 proven. 287 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-10 12:22:18,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:22:18,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 7, 5] total 18 [2018-09-10 12:22:18,706 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:22:18,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:22:18,714 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:22:18,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:22:18,714 INFO L87 Difference]: Start difference. First operand 25069 states and 25887 transitions. Second operand 11 states. [2018-09-10 12:22:27,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:22:27,347 INFO L93 Difference]: Finished difference Result 46946 states and 48595 transitions. [2018-09-10 12:22:27,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-10 12:22:27,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1410 [2018-09-10 12:22:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:22:27,405 INFO L225 Difference]: With dead ends: 46946 [2018-09-10 12:22:27,405 INFO L226 Difference]: Without dead ends: 25603 [2018-09-10 12:22:27,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5681 GetRequests, 5643 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2018-09-10 12:22:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25603 states. [2018-09-10 12:22:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25603 to 24731. [2018-09-10 12:22:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24731 states. [2018-09-10 12:22:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24731 states to 24731 states and 25527 transitions. [2018-09-10 12:22:27,760 INFO L78 Accepts]: Start accepts. Automaton has 24731 states and 25527 transitions. Word has length 1410 [2018-09-10 12:22:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:22:27,761 INFO L480 AbstractCegarLoop]: Abstraction has 24731 states and 25527 transitions. [2018-09-10 12:22:27,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 12:22:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 24731 states and 25527 transitions. [2018-09-10 12:22:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1418 [2018-09-10 12:22:27,796 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:22:27,797 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:22:27,797 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:22:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1959671693, now seen corresponding path program 1 times [2018-09-10 12:22:27,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:22:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:27,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:27,799 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:22:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:29,157 WARN L175 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 12:22:29,506 WARN L175 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:22:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 1469 proven. 2 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2018-09-10 12:22:31,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:22:31,320 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:22:31,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:31,328 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:22:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:31,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:22:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 1469 proven. 2 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2018-09-10 12:22:32,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:22:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 1469 proven. 2 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2018-09-10 12:22:35,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:22:35,552 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 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:22:35,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:35,567 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:22:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:36,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:22:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 2706 proven. 2 refuted. 0 times theorem prover too weak. 1272 trivial. 0 not checked. [2018-09-10 12:22:37,422 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:22:37,708 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:22:37,860 WARN L175 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:22:38,019 WARN L175 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-09-10 12:22:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 854 proven. 336 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2018-09-10 12:22:39,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:22:39,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 18 [2018-09-10 12:22:39,288 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:22:39,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:22:39,290 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:22:39,290 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:22:39,290 INFO L87 Difference]: Start difference. First operand 24731 states and 25527 transitions. Second operand 11 states. [2018-09-10 12:22:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:22:47,850 INFO L93 Difference]: Finished difference Result 45273 states and 46821 transitions. [2018-09-10 12:22:47,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 12:22:47,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1417 [2018-09-10 12:22:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:22:47,896 INFO L225 Difference]: With dead ends: 45273 [2018-09-10 12:22:47,896 INFO L226 Difference]: Without dead ends: 24268 [2018-09-10 12:22:47,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5717 GetRequests, 5676 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2018-09-10 12:22:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24268 states. [2018-09-10 12:22:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24268 to 24214. [2018-09-10 12:22:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24214 states. [2018-09-10 12:22:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24214 states to 24214 states and 24960 transitions. [2018-09-10 12:22:48,212 INFO L78 Accepts]: Start accepts. Automaton has 24214 states and 24960 transitions. Word has length 1417 [2018-09-10 12:22:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:22:48,214 INFO L480 AbstractCegarLoop]: Abstraction has 24214 states and 24960 transitions. [2018-09-10 12:22:48,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 12:22:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24214 states and 24960 transitions. [2018-09-10 12:22:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2074 [2018-09-10 12:22:48,266 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:22:48,267 INFO L376 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:22:48,268 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:22:48,268 INFO L82 PathProgramCache]: Analyzing trace with hash -749873824, now seen corresponding path program 1 times [2018-09-10 12:22:48,268 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:22:48,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:48,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:48,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:22:48,269 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:22:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 1301 proven. 5276 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2018-09-10 12:22:59,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:22:59,221 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:22:59,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:22:59,228 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:22:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:22:59,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:23:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 4762 proven. 2 refuted. 0 times theorem prover too weak. 3410 trivial. 0 not checked. [2018-09-10 12:23:01,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-10 12:23:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 1052 proven. 636 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2018-09-10 12:23:04,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:23:04,235 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 24 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 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:23:04,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:04,305 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:23:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:05,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:23:05,645 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 12:23:05,847 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:23:05,847 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:23:05,853 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:23:05,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:23:05 BoogieIcfgContainer [2018-09-10 12:23:05,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:23:05,854 INFO L168 Benchmark]: Toolchain (without parser) took 232287.10 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 317.9 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,855 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:23:05,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1275.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 172.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,857 INFO L168 Benchmark]: Boogie Preprocessor took 452.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,858 INFO L168 Benchmark]: RCFGBuilder took 8291.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 277.2 MB). Peak memory consumption was 277.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,858 INFO L168 Benchmark]: TraceAbstraction took 222088.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:23:05,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1275.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 172.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 452.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8291.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 277.2 MB). Peak memory consumption was 277.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222088.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was analyzing trace of length 2074 with TraceHistMax 12, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 16 OverallIterations, 12 TraceHistogramMax, 117.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2101 SDtfs, 37208 SDslu, 3449 SDs, 0 SdLazy, 77026 SolverSat, 9624 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 91.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44046 GetRequests, 43638 SyntacticMatches, 45 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3411 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25069occurred in iteration=13, 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: 3.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 7342 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 10.2s SatisfiabilityAnalysisTime, 59.0s InterpolantComputationTime, 35007 NumberOfCodeBlocks, 35007 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 56745 ConstructedInterpolants, 14 QuantifiedInterpolants, 192529883 SizeOfPredicates, 17 NumberOfNonLiveVariables, 29415 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 57 InterpolantComputations, 7 PerfectInterpolantSequences, 135626/144276 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/Problem16_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-23-05-875.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-23-05-875.csv Completed graceful shutdown