java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:06:59,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:06:59,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:06:59,873 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:06:59,873 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:06:59,875 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:06:59,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:06:59,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:06:59,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:06:59,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:06:59,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:06:59,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:06:59,884 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:06:59,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:06:59,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:06:59,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:06:59,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:06:59,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:06:59,892 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:06:59,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:06:59,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:06:59,896 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:06:59,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-08-07 11:06:59,904 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:06:59,904 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:06:59,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:06:59,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:06:59,906 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 [2018-08-07 11:06:59,924 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:06:59,924 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:06:59,925 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:06:59,925 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:06:59,926 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:06:59,926 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:06:59,926 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:06:59,926 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:06:59,926 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:06:59,926 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:06:59,927 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:06:59,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:06:59,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:06:59,928 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:06:59,928 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:06:59,928 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:06:59,928 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:06:59,929 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:06:59,929 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:06:59,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:06:59,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:06:59,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:06:59,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:06:59,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:06:59,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:06:59,930 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:06:59,931 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:06:59,932 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:06:59,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:07:00,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:07:00,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:07:00,009 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:07:00,010 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:07:00,011 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53_true-unreach-call.c [2018-08-07 11:07:00,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6749029f9/5cf644ad995a48cb8eadfde591802f55/FLAGc398c6082 [2018-08-07 11:07:00,715 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:07:00,716 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label53_true-unreach-call.c [2018-08-07 11:07:00,750 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6749029f9/5cf644ad995a48cb8eadfde591802f55/FLAGc398c6082 [2018-08-07 11:07:00,773 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6749029f9/5cf644ad995a48cb8eadfde591802f55 [2018-08-07 11:07:00,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:07:00,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:07:00,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:07:00,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:07:00,801 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:07:00,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:07:00" (1/1) ... [2018-08-07 11:07:00,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3adaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:00, skipping insertion in model container [2018-08-07 11:07:00,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:07:00" (1/1) ... [2018-08-07 11:07:01,090 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:07:01,652 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:07:01,670 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:07:01,962 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:07:02,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02 WrapperNode [2018-08-07 11:07:02,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:07:02,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:07:02,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:07:02,032 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:07:02,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:07:02,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:07:02,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:07:02,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:07:02,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (1/1) ... [2018-08-07 11:07:02,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:07:02,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:07:02,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:07:02,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:07:02,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (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 [2018-08-07 11:07:02,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:07:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:07:02,598 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 [2018-08-07 11:07:02,598 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 [2018-08-07 11:07:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:07:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:07:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:07:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:07:07,355 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:07:07,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:07:07 BoogieIcfgContainer [2018-08-07 11:07:07,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:07:07,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:07:07,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:07:07,361 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:07:07,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:07:00" (1/3) ... [2018-08-07 11:07:07,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d5113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:07:07, skipping insertion in model container [2018-08-07 11:07:07,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:07:02" (2/3) ... [2018-08-07 11:07:07,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d5113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:07:07, skipping insertion in model container [2018-08-07 11:07:07,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:07:07" (3/3) ... [2018-08-07 11:07:07,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label53_true-unreach-call.c [2018-08-07 11:07:07,377 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:07:07,391 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:07:07,462 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:07:07,463 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:07:07,463 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:07:07,463 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:07:07,463 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:07:07,463 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:07:07,464 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:07:07,464 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:07:07,464 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:07:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-08-07 11:07:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-08-07 11:07:07,525 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:07,527 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:07,528 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash 390618596, now seen corresponding path program 1 times [2018-08-07 11:07:07,538 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:07,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:07,599 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:08,518 WARN L170 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:07:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:08,745 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:07:08,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:07:08,746 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:08,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:07:08,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:07:08,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:07:08,777 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-08-07 11:07:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:10,800 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-08-07 11:07:10,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:07:10,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-08-07 11:07:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:10,832 INFO L225 Difference]: With dead ends: 848 [2018-08-07 11:07:10,833 INFO L226 Difference]: Without dead ends: 534 [2018-08-07 11:07:10,847 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:07:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-08-07 11:07:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-08-07 11:07:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-08-07 11:07:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-08-07 11:07:10,960 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 201 [2018-08-07 11:07:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:10,962 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-08-07 11:07:10,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:07:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-08-07 11:07:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-08-07 11:07:10,972 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:10,973 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:10,973 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:10,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1229236448, now seen corresponding path program 1 times [2018-08-07 11:07:10,974 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:10,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:10,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:10,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:10,976 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:11,549 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:07:11,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:07:11,550 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:11,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:07:11,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:07:11,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:07:11,553 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-08-07 11:07:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:13,713 INFO L93 Difference]: Finished difference Result 1484 states and 2494 transitions. [2018-08-07 11:07:13,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:07:13,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-08-07 11:07:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:13,724 INFO L225 Difference]: With dead ends: 1484 [2018-08-07 11:07:13,724 INFO L226 Difference]: Without dead ends: 958 [2018-08-07 11:07:13,727 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:07:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-08-07 11:07:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 952. [2018-08-07 11:07:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-08-07 11:07:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1499 transitions. [2018-08-07 11:07:13,783 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1499 transitions. Word has length 214 [2018-08-07 11:07:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:13,784 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1499 transitions. [2018-08-07 11:07:13,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:07:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1499 transitions. [2018-08-07 11:07:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-08-07 11:07:13,796 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:13,797 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:13,797 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1927078695, now seen corresponding path program 1 times [2018-08-07 11:07:13,800 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:13,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:13,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:13,802 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:14,060 WARN L170 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:07:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:14,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:14,113 INFO L194 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 [2018-08-07 11:07:14,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:14,131 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:14,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:14,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:14,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:14,984 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:07:15,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:15,015 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:15,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:15,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:15,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:07:15,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-08-07 11:07:15,858 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:07:15,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-08-07 11:07:15,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-08-07 11:07:15,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-08-07 11:07:15,860 INFO L87 Difference]: Start difference. First operand 952 states and 1499 transitions. Second operand 8 states. [2018-08-07 11:07:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:22,654 INFO L93 Difference]: Finished difference Result 3678 states and 6274 transitions. [2018-08-07 11:07:22,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:07:22,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-08-07 11:07:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:22,683 INFO L225 Difference]: With dead ends: 3678 [2018-08-07 11:07:22,683 INFO L226 Difference]: Without dead ends: 2732 [2018-08-07 11:07:22,693 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 893 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-08-07 11:07:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2018-08-07 11:07:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2664. [2018-08-07 11:07:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2018-08-07 11:07:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3877 transitions. [2018-08-07 11:07:22,821 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3877 transitions. Word has length 225 [2018-08-07 11:07:22,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:22,822 INFO L480 AbstractCegarLoop]: Abstraction has 2664 states and 3877 transitions. [2018-08-07 11:07:22,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-08-07 11:07:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3877 transitions. [2018-08-07 11:07:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-08-07 11:07:22,835 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:22,836 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:22,836 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:22,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1394729075, now seen corresponding path program 1 times [2018-08-07 11:07:22,836 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:22,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:22,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:22,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:22,838 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:23,126 WARN L170 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:07:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:23,545 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:07:23,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 11:07:23,546 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:23,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:07:23,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:07:23,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 11:07:23,547 INFO L87 Difference]: Start difference. First operand 2664 states and 3877 transitions. Second operand 6 states. [2018-08-07 11:07:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:26,632 INFO L93 Difference]: Finished difference Result 8429 states and 13168 transitions. [2018-08-07 11:07:26,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:07:26,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2018-08-07 11:07:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:26,677 INFO L225 Difference]: With dead ends: 8429 [2018-08-07 11:07:26,677 INFO L226 Difference]: Without dead ends: 5771 [2018-08-07 11:07:26,701 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:07:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2018-08-07 11:07:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5698. [2018-08-07 11:07:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5698 states. [2018-08-07 11:07:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 8101 transitions. [2018-08-07 11:07:26,882 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 8101 transitions. Word has length 236 [2018-08-07 11:07:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:26,882 INFO L480 AbstractCegarLoop]: Abstraction has 5698 states and 8101 transitions. [2018-08-07 11:07:26,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:07:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 8101 transitions. [2018-08-07 11:07:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-08-07 11:07:26,907 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:26,907 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:26,907 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 19976442, now seen corresponding path program 1 times [2018-08-07 11:07:26,908 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:26,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:26,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:26,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:26,909 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:27,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:27,190 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:07:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:27,271 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:27,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:27,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:28,117 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:07:28,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 11:07:28,118 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:28,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:07:28,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:07:28,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:07:28,120 INFO L87 Difference]: Start difference. First operand 5698 states and 8101 transitions. Second operand 3 states. [2018-08-07 11:07:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:29,475 INFO L93 Difference]: Finished difference Result 11393 states and 16205 transitions. [2018-08-07 11:07:29,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:07:29,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2018-08-07 11:07:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:29,507 INFO L225 Difference]: With dead ends: 11393 [2018-08-07 11:07:29,507 INFO L226 Difference]: Without dead ends: 5701 [2018-08-07 11:07:29,532 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:07:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2018-08-07 11:07:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 5656. [2018-08-07 11:07:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5656 states. [2018-08-07 11:07:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 7607 transitions. [2018-08-07 11:07:29,686 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 7607 transitions. Word has length 239 [2018-08-07 11:07:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:29,686 INFO L480 AbstractCegarLoop]: Abstraction has 5656 states and 7607 transitions. [2018-08-07 11:07:29,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:07:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 7607 transitions. [2018-08-07 11:07:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-08-07 11:07:29,707 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:29,707 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:29,708 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1808021271, now seen corresponding path program 1 times [2018-08-07 11:07:29,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:29,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:29,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:29,712 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 71 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-08-07 11:07:30,262 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:30,262 INFO L194 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 [2018-08-07 11:07:30,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:30,284 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:30,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:30,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:31,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:31,404 INFO L194 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 [2018-08-07 11:07:31,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:31,434 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:32,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:32,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:33,018 WARN L170 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:07:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:07:33,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:07:33,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-08-07 11:07:33,128 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:07:33,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:07:33,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:07:33,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:07:33,129 INFO L87 Difference]: Start difference. First operand 5656 states and 7607 transitions. Second operand 9 states. [2018-08-07 11:07:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:37,942 INFO L93 Difference]: Finished difference Result 17498 states and 26702 transitions. [2018-08-07 11:07:37,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:07:37,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2018-08-07 11:07:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:38,048 INFO L225 Difference]: With dead ends: 17498 [2018-08-07 11:07:38,049 INFO L226 Difference]: Without dead ends: 11848 [2018-08-07 11:07:38,086 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1063 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2018-08-07 11:07:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2018-08-07 11:07:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 10655. [2018-08-07 11:07:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10655 states. [2018-08-07 11:07:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 13969 transitions. [2018-08-07 11:07:38,496 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 13969 transitions. Word has length 267 [2018-08-07 11:07:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:38,496 INFO L480 AbstractCegarLoop]: Abstraction has 10655 states and 13969 transitions. [2018-08-07 11:07:38,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:07:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 13969 transitions. [2018-08-07 11:07:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-08-07 11:07:38,524 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:38,525 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:07:38,525 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:38,526 INFO L82 PathProgramCache]: Analyzing trace with hash 646437938, now seen corresponding path program 1 times [2018-08-07 11:07:38,526 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:38,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:38,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:38,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:38,527 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:39,383 WARN L170 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 11 [2018-08-07 11:07:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:39,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:39,814 INFO L194 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 [2018-08-07 11:07:39,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:39,927 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:40,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:40,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:40,751 WARN L170 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-08-07 11:07:40,883 WARN L170 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-08-07 11:07:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:41,249 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:07:41,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 14 [2018-08-07 11:07:41,250 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:41,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:07:41,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:07:41,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-08-07 11:07:41,251 INFO L87 Difference]: Start difference. First operand 10655 states and 13969 transitions. Second operand 5 states. [2018-08-07 11:07:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:44,091 INFO L93 Difference]: Finished difference Result 27490 states and 35969 transitions. [2018-08-07 11:07:44,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:07:44,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2018-08-07 11:07:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:44,166 INFO L225 Difference]: With dead ends: 27490 [2018-08-07 11:07:44,167 INFO L226 Difference]: Without dead ends: 16841 [2018-08-07 11:07:44,194 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:07:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16841 states. [2018-08-07 11:07:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16841 to 16683. [2018-08-07 11:07:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16683 states. [2018-08-07 11:07:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16683 states to 16683 states and 21340 transitions. [2018-08-07 11:07:44,613 INFO L78 Accepts]: Start accepts. Automaton has 16683 states and 21340 transitions. Word has length 280 [2018-08-07 11:07:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:44,614 INFO L480 AbstractCegarLoop]: Abstraction has 16683 states and 21340 transitions. [2018-08-07 11:07:44,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:07:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 16683 states and 21340 transitions. [2018-08-07 11:07:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-08-07 11:07:44,664 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:44,665 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:07:44,665 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash 684440725, now seen corresponding path program 1 times [2018-08-07 11:07:44,666 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:44,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:44,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:44,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:44,667 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:07:45,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:45,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:07:45,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:45,280 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:45,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-08-07 11:07:46,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:46,365 WARN L170 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-08-07 11:07:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 98 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:07:46,547 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:07:46,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2018-08-07 11:07:46,548 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:46,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:07:46,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:07:46,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:07:46,549 INFO L87 Difference]: Start difference. First operand 16683 states and 21340 transitions. Second operand 6 states. [2018-08-07 11:07:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:49,264 INFO L93 Difference]: Finished difference Result 33919 states and 44773 transitions. [2018-08-07 11:07:49,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:07:49,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 307 [2018-08-07 11:07:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:49,358 INFO L225 Difference]: With dead ends: 33919 [2018-08-07 11:07:49,358 INFO L226 Difference]: Without dead ends: 17241 [2018-08-07 11:07:49,400 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 606 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:07:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17241 states. [2018-08-07 11:07:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17241 to 16820. [2018-08-07 11:07:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16820 states. [2018-08-07 11:07:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 21415 transitions. [2018-08-07 11:07:49,886 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 21415 transitions. Word has length 307 [2018-08-07 11:07:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:49,886 INFO L480 AbstractCegarLoop]: Abstraction has 16820 states and 21415 transitions. [2018-08-07 11:07:49,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:07:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 21415 transitions. [2018-08-07 11:07:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-08-07 11:07:49,920 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:49,920 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:07:49,920 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:49,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1345899106, now seen corresponding path program 1 times [2018-08-07 11:07:49,921 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:49,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:49,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:49,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:49,922 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:07:50,697 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:50,697 INFO L194 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 [2018-08-07 11:07:50,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:50,712 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:50,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-08-07 11:07:51,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:07:51,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:07:51,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 11:07:51,821 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:51,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:07:51,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:07:51,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:07:51,823 INFO L87 Difference]: Start difference. First operand 16820 states and 21415 transitions. Second operand 5 states. [2018-08-07 11:07:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:54,278 INFO L93 Difference]: Finished difference Result 46856 states and 60856 transitions. [2018-08-07 11:07:54,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:07:54,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2018-08-07 11:07:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:54,395 INFO L225 Difference]: With dead ends: 46856 [2018-08-07 11:07:54,396 INFO L226 Difference]: Without dead ends: 30042 [2018-08-07 11:07:54,439 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 613 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:07:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2018-08-07 11:07:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 28363. [2018-08-07 11:07:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28363 states. [2018-08-07 11:07:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28363 states to 28363 states and 35754 transitions. [2018-08-07 11:07:55,055 INFO L78 Accepts]: Start accepts. Automaton has 28363 states and 35754 transitions. Word has length 309 [2018-08-07 11:07:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:55,055 INFO L480 AbstractCegarLoop]: Abstraction has 28363 states and 35754 transitions. [2018-08-07 11:07:55,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:07:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 28363 states and 35754 transitions. [2018-08-07 11:07:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-08-07 11:07:55,091 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:55,091 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:07:55,092 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2101742122, now seen corresponding path program 1 times [2018-08-07 11:07:55,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:55,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:55,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:55,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:55,093 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:07:55,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:55,413 INFO L194 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 [2018-08-07 11:07:55,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:55,427 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:55,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-08-07 11:07:55,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:07:55,894 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:07:55,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2018-08-07 11:07:55,895 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:07:55,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:07:55,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:07:55,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-08-07 11:07:55,896 INFO L87 Difference]: Start difference. First operand 28363 states and 35754 transitions. Second operand 3 states. [2018-08-07 11:07:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:56,844 INFO L93 Difference]: Finished difference Result 56717 states and 71500 transitions. [2018-08-07 11:07:56,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:07:56,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2018-08-07 11:07:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:56,941 INFO L225 Difference]: With dead ends: 56717 [2018-08-07 11:07:56,941 INFO L226 Difference]: Without dead ends: 28360 [2018-08-07 11:07:56,988 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 679 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-08-07 11:07:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28360 states. [2018-08-07 11:07:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28360 to 28360. [2018-08-07 11:07:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28360 states. [2018-08-07 11:07:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28360 states to 28360 states and 35746 transitions. [2018-08-07 11:07:57,786 INFO L78 Accepts]: Start accepts. Automaton has 28360 states and 35746 transitions. Word has length 341 [2018-08-07 11:07:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:57,786 INFO L480 AbstractCegarLoop]: Abstraction has 28360 states and 35746 transitions. [2018-08-07 11:07:57,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:07:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 28360 states and 35746 transitions. [2018-08-07 11:07:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-08-07 11:07:57,833 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:57,834 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:07:57,834 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:57,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1468846564, now seen corresponding path program 1 times [2018-08-07 11:07:57,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:57,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:57,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:57,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:57,836 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:07:58,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:58,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:07:58,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:58,506 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:58,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:07:58,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:07:59,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:59,104 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:07:59,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:59,119 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:59,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:07:59,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:08:00,101 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:08:00,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 7 [2018-08-07 11:08:00,102 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:08:00,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:08:00,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:08:00,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:08:00,103 INFO L87 Difference]: Start difference. First operand 28360 states and 35746 transitions. Second operand 6 states. [2018-08-07 11:08:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:08:03,972 INFO L93 Difference]: Finished difference Result 65436 states and 85982 transitions. [2018-08-07 11:08:03,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:08:03,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2018-08-07 11:08:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:08:04,123 INFO L225 Difference]: With dead ends: 65436 [2018-08-07 11:08:04,123 INFO L226 Difference]: Without dead ends: 37082 [2018-08-07 11:08:04,194 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1402 GetRequests, 1394 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:08:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37082 states. [2018-08-07 11:08:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37082 to 36329. [2018-08-07 11:08:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36329 states. [2018-08-07 11:08:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36329 states to 36329 states and 44704 transitions. [2018-08-07 11:08:05,018 INFO L78 Accepts]: Start accepts. Automaton has 36329 states and 44704 transitions. Word has length 348 [2018-08-07 11:08:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:08:05,019 INFO L480 AbstractCegarLoop]: Abstraction has 36329 states and 44704 transitions. [2018-08-07 11:08:05,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:08:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36329 states and 44704 transitions. [2018-08-07 11:08:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-08-07 11:08:05,066 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:08:05,067 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:08:05,067 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:08:05,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1242777461, now seen corresponding path program 1 times [2018-08-07 11:08:05,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:08:05,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:05,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:05,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:05,069 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:08:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:08:05,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:05,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:08:05,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:05,575 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:05,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-08-07 11:08:06,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-08-07 11:08:06,232 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:08:06,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-08-07 11:08:06,232 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:08:06,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:08:06,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:08:06,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-08-07 11:08:06,233 INFO L87 Difference]: Start difference. First operand 36329 states and 44704 transitions. Second operand 3 states. [2018-08-07 11:08:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:08:07,919 INFO L93 Difference]: Finished difference Result 69788 states and 86150 transitions. [2018-08-07 11:08:07,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:08:07,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 347 [2018-08-07 11:08:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:08:08,002 INFO L225 Difference]: With dead ends: 69788 [2018-08-07 11:08:08,002 INFO L226 Difference]: Without dead ends: 34076 [2018-08-07 11:08:08,066 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-08-07 11:08:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34076 states. [2018-08-07 11:08:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34076 to 34007. [2018-08-07 11:08:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34007 states. [2018-08-07 11:08:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34007 states to 34007 states and 41209 transitions. [2018-08-07 11:08:09,092 INFO L78 Accepts]: Start accepts. Automaton has 34007 states and 41209 transitions. Word has length 347 [2018-08-07 11:08:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:08:09,093 INFO L480 AbstractCegarLoop]: Abstraction has 34007 states and 41209 transitions. [2018-08-07 11:08:09,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:08:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 34007 states and 41209 transitions. [2018-08-07 11:08:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-08-07 11:08:09,135 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:08:09,136 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:08:09,136 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:08:09,136 INFO L82 PathProgramCache]: Analyzing trace with hash -789499307, now seen corresponding path program 1 times [2018-08-07 11:08:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:08:09,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:09,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:09,138 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:08:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 239 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-08-07 11:08:09,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:09,620 INFO L194 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 [2018-08-07 11:08:09,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:09,629 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:09,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-08-07 11:08:10,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-08-07 11:08:10,295 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:08:10,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-08-07 11:08:10,296 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:08:10,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:08:10,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:08:10,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:08:10,297 INFO L87 Difference]: Start difference. First operand 34007 states and 41209 transitions. Second operand 3 states. [2018-08-07 11:08:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:08:11,825 INFO L93 Difference]: Finished difference Result 66332 states and 80468 transitions. [2018-08-07 11:08:11,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:08:11,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 387 [2018-08-07 11:08:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:08:11,928 INFO L225 Difference]: With dead ends: 66332 [2018-08-07 11:08:11,928 INFO L226 Difference]: Without dead ends: 34010 [2018-08-07 11:08:11,980 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:08:12,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34010 states. [2018-08-07 11:08:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34010 to 33635. [2018-08-07 11:08:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33635 states. [2018-08-07 11:08:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33635 states to 33635 states and 39758 transitions. [2018-08-07 11:08:12,665 INFO L78 Accepts]: Start accepts. Automaton has 33635 states and 39758 transitions. Word has length 387 [2018-08-07 11:08:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:08:12,665 INFO L480 AbstractCegarLoop]: Abstraction has 33635 states and 39758 transitions. [2018-08-07 11:08:12,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:08:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 33635 states and 39758 transitions. [2018-08-07 11:08:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-08-07 11:08:12,719 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:08:12,719 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:08:12,719 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:08:12,720 INFO L82 PathProgramCache]: Analyzing trace with hash 529203655, now seen corresponding path program 1 times [2018-08-07 11:08:12,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:08:12,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:12,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:12,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:12,721 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:08:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 220 proven. 23 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:13,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:13,255 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:08:13,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:13,263 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:14,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:14,400 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 220 proven. 23 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:14,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:14,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:08:14,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:14,548 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:15,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:15,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 220 proven. 23 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:15,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:08:15,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 15 [2018-08-07 11:08:15,639 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:08:15,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:08:15,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:08:15,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:08:15,641 INFO L87 Difference]: Start difference. First operand 33635 states and 39758 transitions. Second operand 7 states. [2018-08-07 11:08:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:08:18,998 INFO L93 Difference]: Finished difference Result 64093 states and 78095 transitions. [2018-08-07 11:08:18,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:08:18,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2018-08-07 11:08:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:08:19,068 INFO L225 Difference]: With dead ends: 64093 [2018-08-07 11:08:19,068 INFO L226 Difference]: Without dead ends: 31922 [2018-08-07 11:08:19,106 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1620 GetRequests, 1603 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:08:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31922 states. [2018-08-07 11:08:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31922 to 30976. [2018-08-07 11:08:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30976 states. [2018-08-07 11:08:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30976 states to 30976 states and 35686 transitions. [2018-08-07 11:08:19,676 INFO L78 Accepts]: Start accepts. Automaton has 30976 states and 35686 transitions. Word has length 403 [2018-08-07 11:08:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:08:19,676 INFO L480 AbstractCegarLoop]: Abstraction has 30976 states and 35686 transitions. [2018-08-07 11:08:19,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:08:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 30976 states and 35686 transitions. [2018-08-07 11:08:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-08-07 11:08:19,722 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:08:19,722 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:08:19,722 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:08:19,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1734578733, now seen corresponding path program 1 times [2018-08-07 11:08:19,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:08:19,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:19,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:19,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:19,724 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:08:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 323 proven. 55 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-08-07 11:08:21,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:21,737 INFO L194 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 [2018-08-07 11:08:21,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:21,760 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:22,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 347 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:08:22,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 347 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:08:22,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:22,549 INFO L194 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 [2018-08-07 11:08:22,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:22,565 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:23,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 347 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:08:23,662 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 347 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:08:23,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:08:23,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 17 [2018-08-07 11:08:23,882 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:08:23,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-08-07 11:08:23,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-08-07 11:08:23,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:08:23,884 INFO L87 Difference]: Start difference. First operand 30976 states and 35686 transitions. Second operand 13 states. [2018-08-07 11:08:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:08:38,172 INFO L93 Difference]: Finished difference Result 279710 states and 397451 transitions. [2018-08-07 11:08:38,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-08-07 11:08:38,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 422 [2018-08-07 11:08:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:08:39,130 INFO L225 Difference]: With dead ends: 279710 [2018-08-07 11:08:39,130 INFO L226 Difference]: Without dead ends: 251623 [2018-08-07 11:08:39,253 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1704 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=829, Invalid=3727, Unknown=0, NotChecked=0, Total=4556 [2018-08-07 11:08:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251623 states. [2018-08-07 11:08:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251623 to 244368. [2018-08-07 11:08:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244368 states. [2018-08-07 11:08:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244368 states to 244368 states and 325672 transitions. [2018-08-07 11:08:47,305 INFO L78 Accepts]: Start accepts. Automaton has 244368 states and 325672 transitions. Word has length 422 [2018-08-07 11:08:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:08:47,305 INFO L480 AbstractCegarLoop]: Abstraction has 244368 states and 325672 transitions. [2018-08-07 11:08:47,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-08-07 11:08:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 244368 states and 325672 transitions. [2018-08-07 11:08:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-08-07 11:08:48,765 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:08:48,766 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:08:48,766 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:08:48,766 INFO L82 PathProgramCache]: Analyzing trace with hash 188946153, now seen corresponding path program 1 times [2018-08-07 11:08:48,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:08:48,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:48,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:48,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:08:48,768 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:08:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 250 proven. 23 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:08:49,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:08:49,443 INFO L194 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 [2018-08-07 11:08:49,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:08:49,458 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:08:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:08:49,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:08:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-08-07 11:08:50,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:08:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 223 proven. 93 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-08-07 11:08:50,655 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:08:50,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 11:08:50,656 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:08:50,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:08:50,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:08:50,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:08:50,657 INFO L87 Difference]: Start difference. First operand 244368 states and 325672 transitions. Second operand 5 states. [2018-08-07 11:09:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:09:12,510 INFO L93 Difference]: Finished difference Result 686512 states and 977646 transitions. [2018-08-07 11:09:12,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:09:12,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 435 [2018-08-07 11:09:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:09:15,247 INFO L225 Difference]: With dead ends: 686512 [2018-08-07 11:09:15,247 INFO L226 Difference]: Without dead ends: 446961 [2018-08-07 11:09:15,883 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:09:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446961 states. [2018-08-07 11:09:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446961 to 427504. [2018-08-07 11:09:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427504 states. [2018-08-07 11:09:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427504 states to 427504 states and 568585 transitions. [2018-08-07 11:09:33,699 INFO L78 Accepts]: Start accepts. Automaton has 427504 states and 568585 transitions. Word has length 435 [2018-08-07 11:09:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:09:33,700 INFO L480 AbstractCegarLoop]: Abstraction has 427504 states and 568585 transitions. [2018-08-07 11:09:33,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:09:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 427504 states and 568585 transitions. [2018-08-07 11:09:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-08-07 11:09:34,069 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:09:34,070 INFO L376 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:09:34,070 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:09:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1870214908, now seen corresponding path program 1 times [2018-08-07 11:09:34,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:09:34,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:09:34,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:09:34,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:09:34,071 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:09:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:09:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 300 proven. 81 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 11:09:35,994 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:09:35,994 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:09:36,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:09:36,002 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:09:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:09:36,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:09:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-08-07 11:09:36,550 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:09:36,856 WARN L170 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-08-07 11:09:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 229 proven. 127 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-08-07 11:09:37,425 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:09:37,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-08-07 11:09:37,425 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:09:37,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:09:37,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:09:37,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:09:37,426 INFO L87 Difference]: Start difference. First operand 427504 states and 568585 transitions. Second operand 5 states. [2018-08-07 11:10:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:10:09,582 INFO L93 Difference]: Finished difference Result 972840 states and 1349964 transitions. [2018-08-07 11:10:09,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:10:09,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2018-08-07 11:10:09,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:10:12,451 INFO L225 Difference]: With dead ends: 972840 [2018-08-07 11:10:12,451 INFO L226 Difference]: Without dead ends: 550073 [2018-08-07 11:10:13,570 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:10:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550073 states. [2018-08-07 11:10:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550073 to 528907. [2018-08-07 11:10:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528907 states. [2018-08-07 11:10:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528907 states to 528907 states and 684999 transitions. [2018-08-07 11:10:35,637 INFO L78 Accepts]: Start accepts. Automaton has 528907 states and 684999 transitions. Word has length 442 [2018-08-07 11:10:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:10:35,637 INFO L480 AbstractCegarLoop]: Abstraction has 528907 states and 684999 transitions. [2018-08-07 11:10:35,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:10:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 528907 states and 684999 transitions. [2018-08-07 11:10:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-08-07 11:10:35,945 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:10:35,945 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:10:35,945 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:10:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1639076033, now seen corresponding path program 1 times [2018-08-07 11:10:35,946 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:10:35,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:35,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:10:35,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:35,947 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:10:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:10:36,292 WARN L170 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-08-07 11:10:36,337 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 11:10:36,341 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 11:10:36,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 11:10:36 BoogieIcfgContainer [2018-08-07 11:10:36,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 11:10:36,342 INFO L168 Benchmark]: Toolchain (without parser) took 215556.36 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 166.1 MB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2018-08-07 11:10:36,343 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-08-07 11:10:36,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1240.76 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. [2018-08-07 11:10:36,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 146.88 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-07 11:10:36,345 INFO L168 Benchmark]: Boogie Preprocessor took 340.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-08-07 11:10:36,346 INFO L168 Benchmark]: RCFGBuilder took 4835.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 281.9 MB). Peak memory consumption was 281.9 MB. Max. memory is 7.1 GB. [2018-08-07 11:10:36,347 INFO L168 Benchmark]: TraceAbstraction took 208984.59 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 712.5 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-08-07 11:10:36,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1240.76 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 146.88 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 340.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4835.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 281.9 MB). Peak memory consumption was 281.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208984.59 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 712.5 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1617]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1617). Cancelled while BasicCegarLoop was analyzing trace of length 455 with TraceHistMax 6, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 208.8s OverallTime, 18 OverallIterations, 6 TraceHistogramMax, 117.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4434 SDtfs, 22366 SDslu, 6954 SDs, 0 SdLazy, 23916 SolverSat, 5160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13062 GetRequests, 12809 SyntacticMatches, 29 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=528907occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 54.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 53666 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 7.5s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 11820 NumberOfCodeBlocks, 11820 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 18182 ConstructedInterpolants, 0 QuantifiedInterpolants, 14552492 SizeOfPredicates, 50 NumberOfNonLiveVariables, 24261 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 55 InterpolantComputations, 16 PerfectInterpolantSequences, 10137/10874 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-10-36-364.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_11-10-36-364.csv Completed graceful shutdown