java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:43:42,674 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:43:42,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:43:42,689 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:43:42,689 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:43:42,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:43:42,692 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:43:42,693 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:43:42,695 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:43:42,696 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:43:42,697 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:43:42,697 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:43:42,698 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:43:42,699 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:43:42,700 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:43:42,701 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:43:42,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:43:42,703 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:43:42,706 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:43:42,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:43:42,708 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:43:42,710 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:43:42,712 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 14:43:42,719 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:43:42,719 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:43:42,720 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:43:42,721 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:43:42,721 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:43:42,738 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:43:42,738 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:43:42,739 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:43:42,739 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:43:42,739 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:43:42,740 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:43:42,740 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:43:42,740 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:43:42,740 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:43:42,740 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:43:42,740 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:43:42,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:43:42,741 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:43:42,741 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:43:42,742 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:43:42,742 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:43:42,742 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:43:42,742 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:43:42,743 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:43:42,744 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:43:42,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:43:42,744 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:43:42,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:43:42,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:43:42,745 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:43:42,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:43:42,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:43:42,746 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:43:42,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:43:42,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:43:42,747 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:43:42,747 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:43:42,747 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:43:42,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:43:42,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:43:42,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:43:42,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:43:42,836 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:43:42,837 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-07-24 14:43:43,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e9efb7a/9c9f8d355be244d8a684dfeb38adf281/FLAGb7876bb5c [2018-07-24 14:43:43,571 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:43:43,573 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-07-24 14:43:43,601 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e9efb7a/9c9f8d355be244d8a684dfeb38adf281/FLAGb7876bb5c [2018-07-24 14:43:43,626 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e9efb7a/9c9f8d355be244d8a684dfeb38adf281 [2018-07-24 14:43:43,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:43:43,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:43:43,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:43:43,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:43:43,649 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:43:43,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:43:43" (1/1) ... [2018-07-24 14:43:43,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3036c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:43, skipping insertion in model container [2018-07-24 14:43:43,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:43:43" (1/1) ... [2018-07-24 14:43:43,955 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:43:44,554 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:43:44,572 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:43:44,834 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:43:44,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44 WrapperNode [2018-07-24 14:43:44,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:43:44,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:43:44,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:43:44,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:43:44,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:43:45,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:43:45,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:43:45,118 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:43:45,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... [2018-07-24 14:43:45,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:43:45,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:43:45,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:43:45,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:43:45,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:43:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:43:45,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:43:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:43:45,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:43:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:43:45,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:43:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:43:45,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:43:45,671 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 [2018-07-24 14:43:45,671 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 [2018-07-24 14:43:52,378 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:43:52,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:43:52 BoogieIcfgContainer [2018-07-24 14:43:52,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:43:52,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:43:52,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:43:52,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:43:52,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:43:43" (1/3) ... [2018-07-24 14:43:52,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5146b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:43:52, skipping insertion in model container [2018-07-24 14:43:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:43:44" (2/3) ... [2018-07-24 14:43:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5146b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:43:52, skipping insertion in model container [2018-07-24 14:43:52,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:43:52" (3/3) ... [2018-07-24 14:43:52,394 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label28_true-unreach-call.c [2018-07-24 14:43:52,402 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:43:52,411 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:43:52,468 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:43:52,468 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:43:52,469 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:43:52,469 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:43:52,469 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:43:52,469 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:43:52,469 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:43:52,470 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:43:52,470 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:43:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-24 14:43:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-24 14:43:52,515 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:43:52,516 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:43:52,517 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:43:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1219174681, now seen corresponding path program 1 times [2018-07-24 14:43:52,526 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:43:52,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:52,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:52,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:52,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:43:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:53,057 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:43:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:43:53,201 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:43:53,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:43:53,202 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:43:53,208 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:43:53,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:43:53,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:43:53,229 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-24 14:43:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:43:57,008 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-24 14:43:57,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:43:57,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-07-24 14:43:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:43:57,037 INFO L225 Difference]: With dead ends: 1156 [2018-07-24 14:43:57,037 INFO L226 Difference]: Without dead ends: 744 [2018-07-24 14:43:57,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:43:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-24 14:43:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-24 14:43:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 14:43:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-07-24 14:43:57,191 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 73 [2018-07-24 14:43:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:43:57,192 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-07-24 14:43:57,192 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:43:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-07-24 14:43:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-24 14:43:57,211 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:43:57,211 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:43:57,212 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:43:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 627780590, now seen corresponding path program 1 times [2018-07-24 14:43:57,213 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:43:57,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:57,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:57,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:57,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:43:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:43:57,602 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:43:57,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:43:57,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:43:57,607 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:43:57,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:43:57,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:43:57,610 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-07-24 14:44:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:05,122 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-07-24 14:44:05,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:44:05,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-07-24 14:44:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:05,139 INFO L225 Difference]: With dead ends: 2189 [2018-07-24 14:44:05,139 INFO L226 Difference]: Without dead ends: 1451 [2018-07-24 14:44:05,143 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:44:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-07-24 14:44:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-07-24 14:44:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-07-24 14:44:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-07-24 14:44:05,203 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 145 [2018-07-24 14:44:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:05,204 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-07-24 14:44:05,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:44:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-07-24 14:44:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-24 14:44:05,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:05,208 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:44:05,208 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:05,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2116330849, now seen corresponding path program 1 times [2018-07-24 14:44:05,208 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:05,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:05,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:05,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:05,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:44:05,456 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:05,457 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:05,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:05,470 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:05,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:05,772 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:05,959 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:44:05,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 14:44:05,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:44:05,961 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:44:05,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:44:05,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:44:05,962 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 3 states. [2018-07-24 14:44:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:10,399 INFO L93 Difference]: Finished difference Result 3559 states and 5861 transitions. [2018-07-24 14:44:10,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:44:10,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-07-24 14:44:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:10,421 INFO L225 Difference]: With dead ends: 3559 [2018-07-24 14:44:10,422 INFO L226 Difference]: Without dead ends: 2124 [2018-07-24 14:44:10,432 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:44:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2018-07-24 14:44:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2124. [2018-07-24 14:44:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2018-07-24 14:44:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3333 transitions. [2018-07-24 14:44:10,576 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3333 transitions. Word has length 174 [2018-07-24 14:44:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:10,576 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3333 transitions. [2018-07-24 14:44:10,577 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:44:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3333 transitions. [2018-07-24 14:44:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-24 14:44:10,580 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:10,580 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:10,580 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:10,581 INFO L82 PathProgramCache]: Analyzing trace with hash -892902266, now seen corresponding path program 1 times [2018-07-24 14:44:10,581 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:10,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:10,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:10,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:10,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:10,865 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:44:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:11,275 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:44:11,276 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:44:11,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:44:11,277 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:44:11,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:44:11,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:44:11,278 INFO L87 Difference]: Start difference. First operand 2124 states and 3333 transitions. Second operand 6 states. [2018-07-24 14:44:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:16,793 INFO L93 Difference]: Finished difference Result 4961 states and 7702 transitions. [2018-07-24 14:44:16,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:44:16,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-07-24 14:44:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:16,812 INFO L225 Difference]: With dead ends: 4961 [2018-07-24 14:44:16,812 INFO L226 Difference]: Without dead ends: 2843 [2018-07-24 14:44:16,822 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:44:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2018-07-24 14:44:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2821. [2018-07-24 14:44:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2018-07-24 14:44:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3930 transitions. [2018-07-24 14:44:16,902 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3930 transitions. Word has length 189 [2018-07-24 14:44:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:16,903 INFO L471 AbstractCegarLoop]: Abstraction has 2821 states and 3930 transitions. [2018-07-24 14:44:16,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:44:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3930 transitions. [2018-07-24 14:44:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-24 14:44:16,912 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:16,912 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:16,912 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:16,913 INFO L82 PathProgramCache]: Analyzing trace with hash 892910639, now seen corresponding path program 1 times [2018-07-24 14:44:16,913 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:16,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:16,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:16,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:16,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:17,266 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:17,266 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:17,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:17,277 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:17,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:17,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:17,895 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:17,895 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:44:17,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:17,912 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:18,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:18,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:44:18,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:44:18,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:44:18,714 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:44:18,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:44:18,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:44:18,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:44:18,718 INFO L87 Difference]: Start difference. First operand 2821 states and 3930 transitions. Second operand 9 states. [2018-07-24 14:44:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:26,154 INFO L93 Difference]: Finished difference Result 7877 states and 11517 transitions. [2018-07-24 14:44:26,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:44:26,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2018-07-24 14:44:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:26,189 INFO L225 Difference]: With dead ends: 7877 [2018-07-24 14:44:26,190 INFO L226 Difference]: Without dead ends: 5062 [2018-07-24 14:44:26,217 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1273 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:44:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5062 states. [2018-07-24 14:44:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5062 to 5010. [2018-07-24 14:44:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5010 states. [2018-07-24 14:44:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6376 transitions. [2018-07-24 14:44:26,366 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6376 transitions. Word has length 319 [2018-07-24 14:44:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:26,366 INFO L471 AbstractCegarLoop]: Abstraction has 5010 states and 6376 transitions. [2018-07-24 14:44:26,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:44:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6376 transitions. [2018-07-24 14:44:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-07-24 14:44:26,383 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:26,383 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:26,384 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:26,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1724283094, now seen corresponding path program 1 times [2018-07-24 14:44:26,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:26,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:26,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:26,802 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:44:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-07-24 14:44:26,954 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:26,955 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:26,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:26,968 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:27,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-24 14:44:27,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-24 14:44:27,835 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:27,835 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:44:27,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:27,852 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:28,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-24 14:44:28,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-24 14:44:28,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:44:28,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 16 [2018-07-24 14:44:28,621 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:44:28,622 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 14:44:28,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 14:44:28,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:44:28,623 INFO L87 Difference]: Start difference. First operand 5010 states and 6376 transitions. Second operand 8 states. [2018-07-24 14:44:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:32,901 INFO L93 Difference]: Finished difference Result 10449 states and 13622 transitions. [2018-07-24 14:44:32,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:44:32,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 491 [2018-07-24 14:44:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:32,939 INFO L225 Difference]: With dead ends: 10449 [2018-07-24 14:44:32,940 INFO L226 Difference]: Without dead ends: 5445 [2018-07-24 14:44:32,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1978 GetRequests, 1957 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-07-24 14:44:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2018-07-24 14:44:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5353. [2018-07-24 14:44:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5353 states. [2018-07-24 14:44:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 6797 transitions. [2018-07-24 14:44:33,130 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 6797 transitions. Word has length 491 [2018-07-24 14:44:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:33,131 INFO L471 AbstractCegarLoop]: Abstraction has 5353 states and 6797 transitions. [2018-07-24 14:44:33,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 14:44:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 6797 transitions. [2018-07-24 14:44:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-07-24 14:44:33,151 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:33,152 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:33,152 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1231588144, now seen corresponding path program 1 times [2018-07-24 14:44:33,152 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:33,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:33,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:33,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:33,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:44:33,714 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:33,714 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:33,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:33,723 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:33,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:44:34,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:44:35,291 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:35,291 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:44:35,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:35,307 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:35,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:44:35,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:44:36,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:44:36,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:44:36,301 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:44:36,302 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:44:36,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:44:36,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:44:36,303 INFO L87 Difference]: Start difference. First operand 5353 states and 6797 transitions. Second operand 9 states. [2018-07-24 14:44:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:42,841 INFO L93 Difference]: Finished difference Result 11677 states and 15054 transitions. [2018-07-24 14:44:42,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 14:44:42,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 509 [2018-07-24 14:44:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:42,873 INFO L225 Difference]: With dead ends: 11677 [2018-07-24 14:44:42,874 INFO L226 Difference]: Without dead ends: 6330 [2018-07-24 14:44:42,895 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2052 GetRequests, 2032 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:44:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2018-07-24 14:44:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6274. [2018-07-24 14:44:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2018-07-24 14:44:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 7604 transitions. [2018-07-24 14:44:43,026 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 7604 transitions. Word has length 509 [2018-07-24 14:44:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:43,027 INFO L471 AbstractCegarLoop]: Abstraction has 6274 states and 7604 transitions. [2018-07-24 14:44:43,027 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:44:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 7604 transitions. [2018-07-24 14:44:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-07-24 14:44:43,042 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:43,042 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:43,042 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1454953849, now seen corresponding path program 1 times [2018-07-24 14:44:43,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:43,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:43,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:43,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:43,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:43,424 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:44:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 196 proven. 191 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 14:44:43,756 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:43,756 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:43,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:43,763 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:43,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 14:44:44,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 14:44:44,343 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:44:44,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:44:44,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:44:44,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:44:44,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:44:44,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:44:44,345 INFO L87 Difference]: Start difference. First operand 6274 states and 7604 transitions. Second operand 3 states. [2018-07-24 14:44:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:46,940 INFO L93 Difference]: Finished difference Result 12542 states and 15202 transitions. [2018-07-24 14:44:46,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:44:46,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 510 [2018-07-24 14:44:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:46,960 INFO L225 Difference]: With dead ends: 12542 [2018-07-24 14:44:46,961 INFO L226 Difference]: Without dead ends: 6274 [2018-07-24 14:44:46,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1020 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:44:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2018-07-24 14:44:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 6271. [2018-07-24 14:44:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6271 states. [2018-07-24 14:44:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 7349 transitions. [2018-07-24 14:44:47,072 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 7349 transitions. Word has length 510 [2018-07-24 14:44:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:47,073 INFO L471 AbstractCegarLoop]: Abstraction has 6271 states and 7349 transitions. [2018-07-24 14:44:47,073 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:44:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 7349 transitions. [2018-07-24 14:44:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-07-24 14:44:47,088 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:47,088 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:44:47,089 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:47,089 INFO L82 PathProgramCache]: Analyzing trace with hash -554155492, now seen corresponding path program 1 times [2018-07-24 14:44:47,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:47,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:47,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:47,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:47,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:44:47,880 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:47,880 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:47,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:47,889 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:48,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:44:48,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:44:48,706 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:48,707 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:44:48,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:48,722 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:49,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:44:49,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:44:49,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:44:49,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:44:49,624 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:44:49,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:44:49,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:44:49,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:44:49,626 INFO L87 Difference]: Start difference. First operand 6271 states and 7349 transitions. Second operand 9 states. [2018-07-24 14:44:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:44:58,221 INFO L93 Difference]: Finished difference Result 20670 states and 25338 transitions. [2018-07-24 14:44:58,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 14:44:58,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 627 [2018-07-24 14:44:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:44:58,277 INFO L225 Difference]: With dead ends: 20670 [2018-07-24 14:44:58,277 INFO L226 Difference]: Without dead ends: 10512 [2018-07-24 14:44:58,322 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2531 GetRequests, 2507 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-07-24 14:44:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10512 states. [2018-07-24 14:44:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10512 to 10395. [2018-07-24 14:44:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10395 states. [2018-07-24 14:44:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10395 states to 10395 states and 11385 transitions. [2018-07-24 14:44:58,559 INFO L78 Accepts]: Start accepts. Automaton has 10395 states and 11385 transitions. Word has length 627 [2018-07-24 14:44:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:44:58,561 INFO L471 AbstractCegarLoop]: Abstraction has 10395 states and 11385 transitions. [2018-07-24 14:44:58,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:44:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 10395 states and 11385 transitions. [2018-07-24 14:44:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2018-07-24 14:44:58,584 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:44:58,585 INFO L353 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, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:44:58,585 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:44:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash 197755356, now seen corresponding path program 1 times [2018-07-24 14:44:58,586 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:44:58,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:58,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:58,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:44:58,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:44:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 637 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:44:59,363 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:59,363 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:44:59,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:59,373 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:59,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 1140 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-07-24 14:45:00,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 637 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:45:00,863 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:00,863 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:45:00,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:00,880 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:01,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 1140 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-07-24 14:45:02,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 637 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:45:02,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:45:02,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:45:02,607 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:45:02,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:45:02,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:45:02,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:45:02,610 INFO L87 Difference]: Start difference. First operand 10395 states and 11385 transitions. Second operand 9 states. [2018-07-24 14:45:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:45:07,983 INFO L93 Difference]: Finished difference Result 25827 states and 30250 transitions. [2018-07-24 14:45:07,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:45:07,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 881 [2018-07-24 14:45:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:45:08,092 INFO L225 Difference]: With dead ends: 25827 [2018-07-24 14:45:08,092 INFO L226 Difference]: Without dead ends: 15443 [2018-07-24 14:45:08,154 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3546 GetRequests, 3523 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:45:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2018-07-24 14:45:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 15095. [2018-07-24 14:45:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15095 states. [2018-07-24 14:45:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15095 states to 15095 states and 17786 transitions. [2018-07-24 14:45:08,643 INFO L78 Accepts]: Start accepts. Automaton has 15095 states and 17786 transitions. Word has length 881 [2018-07-24 14:45:08,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:45:08,644 INFO L471 AbstractCegarLoop]: Abstraction has 15095 states and 17786 transitions. [2018-07-24 14:45:08,644 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:45:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 15095 states and 17786 transitions. [2018-07-24 14:45:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2018-07-24 14:45:08,697 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:45:08,698 INFO L353 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:45:08,698 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:45:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 643603724, now seen corresponding path program 1 times [2018-07-24 14:45:08,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:45:08,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:08,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:08,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:08,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:45:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:45:09,837 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:09,837 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:45:09,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:09,845 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:10,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:45:11,050 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:45:11,520 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:11,521 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:45:11,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:11,536 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:12,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:45:12,569 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:45:13,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:45:13,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:45:13,033 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:45:13,034 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:45:13,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:45:13,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:45:13,035 INFO L87 Difference]: Start difference. First operand 15095 states and 17786 transitions. Second operand 9 states. [2018-07-24 14:45:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:45:18,983 INFO L93 Difference]: Finished difference Result 29329 states and 34356 transitions. [2018-07-24 14:45:18,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 14:45:18,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 900 [2018-07-24 14:45:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:45:19,029 INFO L225 Difference]: With dead ends: 29329 [2018-07-24 14:45:19,029 INFO L226 Difference]: Without dead ends: 13188 [2018-07-24 14:45:19,124 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3626 GetRequests, 3600 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:45:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13188 states. [2018-07-24 14:45:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13188 to 12357. [2018-07-24 14:45:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12357 states. [2018-07-24 14:45:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 13309 transitions. [2018-07-24 14:45:19,392 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 13309 transitions. Word has length 900 [2018-07-24 14:45:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:45:19,393 INFO L471 AbstractCegarLoop]: Abstraction has 12357 states and 13309 transitions. [2018-07-24 14:45:19,393 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:45:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 13309 transitions. [2018-07-24 14:45:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2018-07-24 14:45:19,440 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:45:19,440 INFO L353 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:45:19,441 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:45:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash -52018473, now seen corresponding path program 1 times [2018-07-24 14:45:19,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:45:19,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:19,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:19,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:19,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:45:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:20,319 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 14:45:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2128 backedges. 832 proven. 110 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2018-07-24 14:45:21,082 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:21,082 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:45:21,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:21,089 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:21,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2128 backedges. 749 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2018-07-24 14:45:22,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:22,457 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-07-24 14:45:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2128 backedges. 396 proven. 663 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2018-07-24 14:45:24,419 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:45:24,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 14:45:24,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:45:24,420 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:45:24,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:45:24,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:45:24,421 INFO L87 Difference]: Start difference. First operand 12357 states and 13309 transitions. Second operand 6 states. [2018-07-24 14:45:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:45:27,718 INFO L93 Difference]: Finished difference Result 25816 states and 27805 transitions. [2018-07-24 14:45:27,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:45:27,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1011 [2018-07-24 14:45:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:45:27,750 INFO L225 Difference]: With dead ends: 25816 [2018-07-24 14:45:27,750 INFO L226 Difference]: Without dead ends: 13470 [2018-07-24 14:45:27,774 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2040 GetRequests, 2017 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:45:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2018-07-24 14:45:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 12985. [2018-07-24 14:45:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12985 states. [2018-07-24 14:45:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12985 states to 12985 states and 13960 transitions. [2018-07-24 14:45:28,002 INFO L78 Accepts]: Start accepts. Automaton has 12985 states and 13960 transitions. Word has length 1011 [2018-07-24 14:45:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:45:28,003 INFO L471 AbstractCegarLoop]: Abstraction has 12985 states and 13960 transitions. [2018-07-24 14:45:28,003 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:45:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12985 states and 13960 transitions. [2018-07-24 14:45:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2018-07-24 14:45:28,066 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:45:28,067 INFO L353 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:45:28,067 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:45:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash -452124612, now seen corresponding path program 1 times [2018-07-24 14:45:28,068 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:45:28,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:28,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:28,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:28,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:45:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 505 proven. 1548 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2018-07-24 14:45:31,307 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:31,307 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:45:31,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:31,315 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:31,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1504 proven. 2 refuted. 0 times theorem prover too weak. 1616 trivial. 0 not checked. [2018-07-24 14:45:32,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 490 proven. 1326 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2018-07-24 14:45:35,460 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:35,460 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:45:35,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:35,476 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:36,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1741 proven. 2 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2018-07-24 14:45:37,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 725 proven. 675 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-07-24 14:45:40,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:45:40,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 5] total 24 [2018-07-24 14:45:40,623 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:45:40,624 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:45:40,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:45:40,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:45:40,625 INFO L87 Difference]: Start difference. First operand 12985 states and 13960 transitions. Second operand 16 states. [2018-07-24 14:45:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:45:53,146 INFO L93 Difference]: Finished difference Result 39231 states and 42519 transitions. [2018-07-24 14:45:53,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 14:45:53,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1251 [2018-07-24 14:45:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:45:53,233 INFO L225 Difference]: With dead ends: 39231 [2018-07-24 14:45:53,234 INFO L226 Difference]: Without dead ends: 26590 [2018-07-24 14:45:53,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5086 GetRequests, 5019 SyntacticMatches, 12 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=651, Invalid=2541, Unknown=0, NotChecked=0, Total=3192 [2018-07-24 14:45:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26590 states. [2018-07-24 14:45:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26590 to 24375. [2018-07-24 14:45:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24375 states. [2018-07-24 14:45:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24375 states to 24375 states and 26220 transitions. [2018-07-24 14:45:53,721 INFO L78 Accepts]: Start accepts. Automaton has 24375 states and 26220 transitions. Word has length 1251 [2018-07-24 14:45:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:45:53,722 INFO L471 AbstractCegarLoop]: Abstraction has 24375 states and 26220 transitions. [2018-07-24 14:45:53,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:45:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24375 states and 26220 transitions. [2018-07-24 14:45:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2018-07-24 14:45:53,776 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:45:53,777 INFO L353 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:45:53,777 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:45:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash 984688235, now seen corresponding path program 1 times [2018-07-24 14:45:53,778 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:45:53,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:53,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:53,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:45:53,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:45:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 872 proven. 392 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2018-07-24 14:45:55,612 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:55,612 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:45:55,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:55,624 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:56,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 2184 proven. 2 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2018-07-24 14:45:56,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:45:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 872 proven. 392 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2018-07-24 14:45:57,540 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:45:57,540 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:45:57,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:45:57,556 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:45:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:45:58,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:45:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 2184 proven. 2 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2018-07-24 14:45:59,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:46:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 872 proven. 392 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2018-07-24 14:46:00,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:46:00,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:46:00,016 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:46:00,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:46:00,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:46:00,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:46:00,019 INFO L87 Difference]: Start difference. First operand 24375 states and 26220 transitions. Second operand 9 states. [2018-07-24 14:46:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:46:04,879 INFO L93 Difference]: Finished difference Result 48289 states and 51863 transitions. [2018-07-24 14:46:04,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:46:04,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1260 [2018-07-24 14:46:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:46:04,938 INFO L225 Difference]: With dead ends: 48289 [2018-07-24 14:46:04,938 INFO L226 Difference]: Without dead ends: 24260 [2018-07-24 14:46:04,986 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5062 GetRequests, 5039 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:46:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24260 states. [2018-07-24 14:46:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24260 to 20611. [2018-07-24 14:46:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20611 states. [2018-07-24 14:46:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 21378 transitions. [2018-07-24 14:46:05,313 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 21378 transitions. Word has length 1260 [2018-07-24 14:46:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:46:05,314 INFO L471 AbstractCegarLoop]: Abstraction has 20611 states and 21378 transitions. [2018-07-24 14:46:05,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:46:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 21378 transitions. [2018-07-24 14:46:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2018-07-24 14:46:05,339 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:46:05,340 INFO L353 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:46:05,340 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:46:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1395646199, now seen corresponding path program 1 times [2018-07-24 14:46:05,341 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:46:05,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:46:05,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:05,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:46:05,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:46:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:06,265 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 14:46:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1043 proven. 218 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2018-07-24 14:46:10,231 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:46:10,231 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:46:10,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:10,239 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:46:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:10,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:46:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1699 proven. 6 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-07-24 14:46:11,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:46:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 346 proven. 1545 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2018-07-24 14:46:15,671 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:46:15,671 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:46:15,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:15,688 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:46:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:16,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:46:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1458 proven. 6 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2018-07-24 14:46:18,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:46:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 348 proven. 1543 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2018-07-24 14:46:24,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:46:24,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 7, 8] total 33 [2018-07-24 14:46:24,822 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:46:24,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 14:46:24,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 14:46:24,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2018-07-24 14:46:24,825 INFO L87 Difference]: Start difference. First operand 20611 states and 21378 transitions. Second operand 18 states. [2018-07-24 14:46:30,844 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-07-24 14:46:34,574 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2018-07-24 14:46:38,095 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-07-24 14:46:40,433 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-07-24 14:46:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:46:40,710 INFO L93 Difference]: Finished difference Result 42523 states and 44126 transitions. [2018-07-24 14:46:40,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 14:46:40,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1260 [2018-07-24 14:46:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:46:40,749 INFO L225 Difference]: With dead ends: 42523 [2018-07-24 14:46:40,749 INFO L226 Difference]: Without dead ends: 22258 [2018-07-24 14:46:40,772 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5115 GetRequests, 5046 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=830, Invalid=3726, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 14:46:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22258 states. [2018-07-24 14:46:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22258 to 19937. [2018-07-24 14:46:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19937 states. [2018-07-24 14:46:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19937 states to 19937 states and 20669 transitions. [2018-07-24 14:46:41,024 INFO L78 Accepts]: Start accepts. Automaton has 19937 states and 20669 transitions. Word has length 1260 [2018-07-24 14:46:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:46:41,024 INFO L471 AbstractCegarLoop]: Abstraction has 19937 states and 20669 transitions. [2018-07-24 14:46:41,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-24 14:46:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19937 states and 20669 transitions. [2018-07-24 14:46:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2018-07-24 14:46:41,046 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:46:41,047 INFO L353 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, 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, 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] [2018-07-24 14:46:41,047 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:46:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash -788490474, now seen corresponding path program 1 times [2018-07-24 14:46:41,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:46:41,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:46:41,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:41,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:46:41,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:46:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4316 backedges. 1170 proven. 182 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2018-07-24 14:46:43,335 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:46:43,335 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:46:43,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:43,342 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:46:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:43,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:46:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4316 backedges. 2888 proven. 6 refuted. 0 times theorem prover too weak. 1422 trivial. 0 not checked. [2018-07-24 14:46:44,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:46:44,991 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 14:46:46,228 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:46:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4316 backedges. 1784 proven. 361 refuted. 0 times theorem prover too weak. 2171 trivial. 0 not checked. [2018-07-24 14:46:48,657 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:46:48,657 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:46:48,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:46:48,674 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:46:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:46:49,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:46:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4316 backedges. 1632 proven. 872 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2018-07-24 14:46:50,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:46:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4316 backedges. 1636 proven. 2 refuted. 0 times theorem prover too weak. 2678 trivial. 0 not checked. [2018-07-24 14:46:55,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:46:55,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 7, 5] total 28 [2018-07-24 14:46:55,261 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:46:55,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:46:55,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:46:55,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2018-07-24 14:46:55,264 INFO L87 Difference]: Start difference. First operand 19937 states and 20669 transitions. Second operand 16 states. [2018-07-24 14:47:23,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:47:23,587 INFO L93 Difference]: Finished difference Result 44762 states and 46371 transitions. [2018-07-24 14:47:23,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-24 14:47:23,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1414 [2018-07-24 14:47:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:47:23,589 INFO L225 Difference]: With dead ends: 44762 [2018-07-24 14:47:23,589 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 14:47:23,638 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5722 GetRequests, 5667 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970 [2018-07-24 14:47:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 14:47:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 14:47:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 14:47:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 14:47:23,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1414 [2018-07-24 14:47:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:47:23,640 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 14:47:23,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:47:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 14:47:23,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 14:47:23,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 14:47:23,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:23,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:23,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,159 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:24,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,601 WARN L169 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 665 DAG size of output: 527 [2018-07-24 14:47:25,648 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:25,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,022 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,884 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:26,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:27,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:47:28,288 WARN L169 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 665 DAG size of output: 527 [2018-07-24 14:47:31,868 WARN L169 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 340 DAG size of output: 84 Received shutdown request... [2018-07-24 14:47:33,735 WARN L177 SmtUtils]: Removed 7 from assertion stack [2018-07-24 14:47:33,736 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 14:47:33,738 INFO L168 Benchmark]: Toolchain (without parser) took 230098.23 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,739 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:47:33,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1292.11 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.75 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,741 INFO L168 Benchmark]: Boogie Preprocessor took 474.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,741 INFO L168 Benchmark]: RCFGBuilder took 6787.58 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 299.3 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,742 INFO L168 Benchmark]: TraceAbstraction took 221353.19 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:47:33,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1292.11 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.75 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 474.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6787.58 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 299.3 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221353.19 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 485. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-47-33-761.csv Completed graceful shutdown