java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:26:42,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:26:42,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:26:42,397 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:26:42,398 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:26:42,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:26:42,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:26:42,406 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:26:42,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:26:42,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:26:42,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:26:42,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:26:42,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:26:42,418 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:26:42,419 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:26:42,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:26:42,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:26:42,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:26:42,433 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:26:42,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:26:42,438 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:26:42,441 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:26:42,445 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:26:42,445 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:26:42,446 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:26:42,447 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:26:42,448 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:26:42,449 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:26:42,450 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:26:42,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:26:42,451 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:26:42,451 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:26:42,451 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:26:42,452 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:26:42,453 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:26:42,453 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:26:42,453 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:26:42,468 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:26:42,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:26:42,469 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:26:42,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:26:42,470 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:26:42,470 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:26:42,470 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:26:42,470 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:26:42,471 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:26:42,471 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:26:42,471 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:26:42,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:26:42,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:26:42,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:26:42,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:26:42,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:26:42,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:26:42,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:26:42,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:26:42,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:26:42,474 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:26:42,474 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:26:42,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:26:42,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:26:42,475 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:26:42,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:26:42,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:26:42,475 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:26:42,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:26:42,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:26:42,476 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:26:42,476 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:26:42,476 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:26:42,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:26:42,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:26:42,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:26:42,572 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:26:42,572 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:26:42,573 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46_false-unreach-call.c [2018-07-24 12:26:42,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c170d0c5/6c6c98d6a5e34a4bb3249f2c76a1f18d/FLAG57088812d [2018-07-24 12:26:43,309 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:26:43,310 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46_false-unreach-call.c [2018-07-24 12:26:43,343 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c170d0c5/6c6c98d6a5e34a4bb3249f2c76a1f18d/FLAG57088812d [2018-07-24 12:26:43,364 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c170d0c5/6c6c98d6a5e34a4bb3249f2c76a1f18d [2018-07-24 12:26:43,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:26:43,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:26:43,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:26:43,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:26:43,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:26:43,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:26:43" (1/1) ... [2018-07-24 12:26:43,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df7ddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:43, skipping insertion in model container [2018-07-24 12:26:43,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:26:43" (1/1) ... [2018-07-24 12:26:43,741 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:26:44,466 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:26:44,484 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:26:44,938 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:26:45,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45 WrapperNode [2018-07-24 12:26:45,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:26:45,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:26:45,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:26:45,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:26:45,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:45,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:45,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:26:45,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:26:45,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:26:45,421 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:26:46,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... [2018-07-24 12:26:46,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:26:46,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:26:46,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:26:46,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:26:46,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:26:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:26:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:26:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:26:46,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:26:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:26:46,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:26:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:26:46,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:26:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:26:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:26:55,678 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:26:55,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:26:55 BoogieIcfgContainer [2018-07-24 12:26:55,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:26:55,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:26:55,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:26:55,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:26:55,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:26:43" (1/3) ... [2018-07-24 12:26:55,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47666a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:26:55, skipping insertion in model container [2018-07-24 12:26:55,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:45" (2/3) ... [2018-07-24 12:26:55,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47666a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:26:55, skipping insertion in model container [2018-07-24 12:26:55,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:26:55" (3/3) ... [2018-07-24 12:26:55,690 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label46_false-unreach-call.c [2018-07-24 12:26:55,701 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:26:55,717 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:26:55,778 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:26:55,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:26:55,779 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:26:55,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:26:55,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:26:55,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:26:55,780 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:26:55,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:26:55,780 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:26:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 12:26:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-24 12:26:55,824 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:55,826 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:26:55,826 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:26:55,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2034908534, now seen corresponding path program 1 times [2018-07-24 12:26:55,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:55,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:55,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:55,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:55,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:56,278 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:26:56,279 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:26:56,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:56,283 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:26:56,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:26:56,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:26:56,299 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 12:27:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:06,525 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-07-24 12:27:06,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:27:06,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-07-24 12:27:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:06,562 INFO L225 Difference]: With dead ends: 2162 [2018-07-24 12:27:06,562 INFO L226 Difference]: Without dead ends: 1552 [2018-07-24 12:27:06,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-07-24 12:27:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-07-24 12:27:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-07-24 12:27:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-07-24 12:27:06,730 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 17 [2018-07-24 12:27:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:06,730 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-07-24 12:27:06,731 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:27:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-07-24 12:27:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 12:27:06,739 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:06,739 INFO L353 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] [2018-07-24 12:27:06,739 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:27:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 417896273, now seen corresponding path program 1 times [2018-07-24 12:27:06,740 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:06,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:06,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:06,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:06,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:07,128 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:07,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:27:07,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:07,130 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:27:07,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:27:07,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:27:07,132 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-07-24 12:27:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:19,920 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-07-24 12:27:19,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:27:19,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 12:27:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:19,950 INFO L225 Difference]: With dead ends: 4431 [2018-07-24 12:27:19,950 INFO L226 Difference]: Without dead ends: 2912 [2018-07-24 12:27:19,958 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:27:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-07-24 12:27:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-07-24 12:27:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-07-24 12:27:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-07-24 12:27:20,081 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 96 [2018-07-24 12:27:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:20,082 INFO L471 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-07-24 12:27:20,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:27:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-07-24 12:27:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-24 12:27:20,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:20,091 INFO L353 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] [2018-07-24 12:27:20,091 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:27:20,091 INFO L82 PathProgramCache]: Analyzing trace with hash -910113897, now seen corresponding path program 1 times [2018-07-24 12:27:20,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:20,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:20,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:20,352 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:20,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:27:20,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:20,353 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:27:20,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:27:20,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:27:20,354 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-07-24 12:27:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:26,401 INFO L93 Difference]: Finished difference Result 7152 states and 11703 transitions. [2018-07-24 12:27:26,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:27:26,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-07-24 12:27:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:26,433 INFO L225 Difference]: With dead ends: 7152 [2018-07-24 12:27:26,434 INFO L226 Difference]: Without dead ends: 4280 [2018-07-24 12:27:26,448 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:27:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2018-07-24 12:27:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4238. [2018-07-24 12:27:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2018-07-24 12:27:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5870 transitions. [2018-07-24 12:27:26,600 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5870 transitions. Word has length 97 [2018-07-24 12:27:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:26,600 INFO L471 AbstractCegarLoop]: Abstraction has 4238 states and 5870 transitions. [2018-07-24 12:27:26,600 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:27:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5870 transitions. [2018-07-24 12:27:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-24 12:27:26,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:26,609 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:27:26,609 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:27:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1309914496, now seen corresponding path program 1 times [2018-07-24 12:27:26,609 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:26,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:26,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:26,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:26,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:27:26,856 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:26,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:27:26,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:26,857 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:27:26,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:27:26,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:27:26,858 INFO L87 Difference]: Start difference. First operand 4238 states and 5870 transitions. Second operand 3 states. [2018-07-24 12:27:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:32,720 INFO L93 Difference]: Finished difference Result 12466 states and 17703 transitions. [2018-07-24 12:27:32,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:27:32,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2018-07-24 12:27:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:32,765 INFO L225 Difference]: With dead ends: 12466 [2018-07-24 12:27:32,766 INFO L226 Difference]: Without dead ends: 8234 [2018-07-24 12:27:32,799 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:27:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2018-07-24 12:27:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 8232. [2018-07-24 12:27:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8232 states. [2018-07-24 12:27:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 10655 transitions. [2018-07-24 12:27:33,006 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 10655 transitions. Word has length 184 [2018-07-24 12:27:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:33,007 INFO L471 AbstractCegarLoop]: Abstraction has 8232 states and 10655 transitions. [2018-07-24 12:27:33,007 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:27:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 10655 transitions. [2018-07-24 12:27:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-24 12:27:33,015 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:33,016 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:27:33,016 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:27:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2083908615, now seen corresponding path program 1 times [2018-07-24 12:27:33,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:33,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:33,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:33,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:33,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 12:27:33,738 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:33,738 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:27:33,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:33,749 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:33,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:38,526 WARN L169 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-07-24 12:27:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:27:38,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:39,029 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:27:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:40,618 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:40,618 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:27:40,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:40,634 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:41,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:27:43,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:44,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:27:44,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-07-24 12:27:44,105 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:27:44,107 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 12:27:44,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 12:27:44,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=146, Unknown=1, NotChecked=0, Total=210 [2018-07-24 12:27:44,111 INFO L87 Difference]: Start difference. First operand 8232 states and 10655 transitions. Second operand 10 states. [2018-07-24 12:28:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:28:07,969 INFO L93 Difference]: Finished difference Result 41103 states and 60576 transitions. [2018-07-24 12:28:07,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:28:07,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 247 [2018-07-24 12:28:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:28:08,286 INFO L225 Difference]: With dead ends: 41103 [2018-07-24 12:28:08,286 INFO L226 Difference]: Without dead ends: 32877 [2018-07-24 12:28:08,573 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 976 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=212, Invalid=489, Unknown=1, NotChecked=0, Total=702 [2018-07-24 12:28:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32877 states. [2018-07-24 12:28:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32877 to 32376. [2018-07-24 12:28:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32376 states. [2018-07-24 12:28:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32376 states to 32376 states and 41286 transitions. [2018-07-24 12:28:09,881 INFO L78 Accepts]: Start accepts. Automaton has 32376 states and 41286 transitions. Word has length 247 [2018-07-24 12:28:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:28:09,882 INFO L471 AbstractCegarLoop]: Abstraction has 32376 states and 41286 transitions. [2018-07-24 12:28:09,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 12:28:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 32376 states and 41286 transitions. [2018-07-24 12:28:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-24 12:28:09,897 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:28:09,897 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:28:09,897 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:28:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2072959812, now seen corresponding path program 1 times [2018-07-24 12:28:09,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:28:09,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:09,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:09,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:09,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:28:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:28:10,129 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:28:10,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:28:10,129 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:28:10,130 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:28:10,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:28:10,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:28:10,131 INFO L87 Difference]: Start difference. First operand 32376 states and 41286 transitions. Second operand 3 states. [2018-07-24 12:28:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:28:17,643 INFO L93 Difference]: Finished difference Result 77041 states and 102241 transitions. [2018-07-24 12:28:17,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:28:17,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2018-07-24 12:28:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:28:17,835 INFO L225 Difference]: With dead ends: 77041 [2018-07-24 12:28:17,835 INFO L226 Difference]: Without dead ends: 44671 [2018-07-24 12:28:17,990 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:28:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44671 states. [2018-07-24 12:28:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44671 to 44653. [2018-07-24 12:28:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44653 states. [2018-07-24 12:28:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44653 states to 44653 states and 58079 transitions. [2018-07-24 12:28:19,542 INFO L78 Accepts]: Start accepts. Automaton has 44653 states and 58079 transitions. Word has length 252 [2018-07-24 12:28:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:28:19,543 INFO L471 AbstractCegarLoop]: Abstraction has 44653 states and 58079 transitions. [2018-07-24 12:28:19,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:28:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 44653 states and 58079 transitions. [2018-07-24 12:28:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-24 12:28:19,565 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:28:19,566 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:28:19,566 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:28:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1817655508, now seen corresponding path program 1 times [2018-07-24 12:28:19,567 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:28:19,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:19,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:19,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:19,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:28:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:20,197 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-07-24 12:28:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 12:28:20,436 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:28:20,436 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:28:20,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:20,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:28:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:20,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:28:20,738 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:28:20,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:28:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:28:21,447 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:28:21,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-07-24 12:28:21,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:28:21,448 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:28:21,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:28:21,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:28:21,448 INFO L87 Difference]: Start difference. First operand 44653 states and 58079 transitions. Second operand 5 states. [2018-07-24 12:28:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:28:31,976 INFO L93 Difference]: Finished difference Result 102866 states and 132968 transitions. [2018-07-24 12:28:31,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:28:31,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2018-07-24 12:28:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:28:32,208 INFO L225 Difference]: With dead ends: 102866 [2018-07-24 12:28:32,209 INFO L226 Difference]: Without dead ends: 55650 [2018-07-24 12:28:32,348 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 535 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:28:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55650 states. [2018-07-24 12:28:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55650 to 53209. [2018-07-24 12:28:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53209 states. [2018-07-24 12:28:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53209 states to 53209 states and 68344 transitions. [2018-07-24 12:28:33,384 INFO L78 Accepts]: Start accepts. Automaton has 53209 states and 68344 transitions. Word has length 269 [2018-07-24 12:28:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:28:33,384 INFO L471 AbstractCegarLoop]: Abstraction has 53209 states and 68344 transitions. [2018-07-24 12:28:33,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:28:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 53209 states and 68344 transitions. [2018-07-24 12:28:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-24 12:28:33,413 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:28:33,413 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:28:33,413 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:28:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash 937762559, now seen corresponding path program 1 times [2018-07-24 12:28:33,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:28:33,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:33,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:33,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:28:33,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:28:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:33,855 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 12:28:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 48 proven. 168 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:28:34,994 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:28:34,994 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:28:35,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:35,001 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:28:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:35,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:28:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:28:35,469 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:28:35,969 WARN L169 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-07-24 12:28:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 108 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 12:28:36,508 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:28:36,508 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:28:36,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:28:36,525 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:28:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:28:36,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:28:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:28:36,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:28:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 38 proven. 175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 12:28:37,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:28:37,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 20 [2018-07-24 12:28:37,636 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:28:37,637 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:28:37,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:28:37,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:28:37,638 INFO L87 Difference]: Start difference. First operand 53209 states and 68344 transitions. Second operand 15 states. [2018-07-24 12:28:38,361 WARN L169 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-07-24 12:28:39,086 WARN L169 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2018-07-24 12:28:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:28:59,691 INFO L93 Difference]: Finished difference Result 158256 states and 203079 transitions. [2018-07-24 12:28:59,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-24 12:28:59,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 344 [2018-07-24 12:28:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:28:59,818 INFO L225 Difference]: With dead ends: 158256 [2018-07-24 12:28:59,818 INFO L226 Difference]: Without dead ends: 57814 [2018-07-24 12:29:00,122 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1432 GetRequests, 1379 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=543, Invalid=1619, Unknown=0, NotChecked=0, Total=2162 [2018-07-24 12:29:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57814 states. [2018-07-24 12:29:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57814 to 54845. [2018-07-24 12:29:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54845 states. [2018-07-24 12:29:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54845 states to 54845 states and 66740 transitions. [2018-07-24 12:29:00,847 INFO L78 Accepts]: Start accepts. Automaton has 54845 states and 66740 transitions. Word has length 344 [2018-07-24 12:29:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:29:00,847 INFO L471 AbstractCegarLoop]: Abstraction has 54845 states and 66740 transitions. [2018-07-24 12:29:00,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:29:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 54845 states and 66740 transitions. [2018-07-24 12:29:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-24 12:29:00,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:29:00,861 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:29:00,861 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:29:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1338317731, now seen corresponding path program 1 times [2018-07-24 12:29:00,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:29:00,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:29:00,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:29:00,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:29:00,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:29:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:29:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-07-24 12:29:01,632 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:29:01,632 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:29:01,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:29:01,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:29:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:29:01,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:29:03,013 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-07-24 12:29:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 250 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:29:03,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:29:03,376 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-07-24 12:29:03,851 WARN L169 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2018-07-24 12:29:06,050 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:29:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:29:07,555 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:29:07,555 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:29:07,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:29:07,570 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:29:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:29:07,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:29:14,067 WARN L169 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-07-24 12:29:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:29:14,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:29:14,460 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-07-24 12:29:16,847 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:29:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:29:17,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:29:17,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 8, 8] total 33 [2018-07-24 12:29:17,570 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:29:17,571 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:29:17,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:29:17,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=916, Unknown=1, NotChecked=0, Total=1056 [2018-07-24 12:29:17,572 INFO L87 Difference]: Start difference. First operand 54845 states and 66740 transitions. Second operand 16 states. [2018-07-24 12:29:54,250 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 12:30:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:30:01,561 INFO L93 Difference]: Finished difference Result 173791 states and 215476 transitions. [2018-07-24 12:30:01,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-24 12:30:01,561 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 357 [2018-07-24 12:30:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:30:02,517 INFO L225 Difference]: With dead ends: 173791 [2018-07-24 12:30:02,517 INFO L226 Difference]: Without dead ends: 107661 [2018-07-24 12:30:02,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1404 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=2240, Invalid=13509, Unknown=1, NotChecked=0, Total=15750 [2018-07-24 12:30:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107661 states. [2018-07-24 12:30:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107661 to 100109. [2018-07-24 12:30:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100109 states. [2018-07-24 12:30:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100109 states to 100109 states and 122453 transitions. [2018-07-24 12:30:04,148 INFO L78 Accepts]: Start accepts. Automaton has 100109 states and 122453 transitions. Word has length 357 [2018-07-24 12:30:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:30:04,152 INFO L471 AbstractCegarLoop]: Abstraction has 100109 states and 122453 transitions. [2018-07-24 12:30:04,152 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:30:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 100109 states and 122453 transitions. [2018-07-24 12:30:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-24 12:30:04,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:30:04,167 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:30:04,167 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:30:04,167 INFO L82 PathProgramCache]: Analyzing trace with hash -64152656, now seen corresponding path program 1 times [2018-07-24 12:30:04,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:30:04,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:30:04,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:30:04,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:30:04,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:30:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:30:05,170 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:30:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-07-24 12:30:05,691 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:30:05,692 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:30:05,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:30:05,713 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:30:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:30:05,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:30:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:30:06,075 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:30:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:30:07,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:30:07,154 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:30:07,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:30:07,169 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:30:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:30:07,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:30:07,793 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-07-24 12:30:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 261 proven. 87 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:30:08,260 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:30:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 40 proven. 314 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:30:09,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:30:09,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 8, 8] total 26 [2018-07-24 12:30:09,317 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:30:09,319 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 12:30:09,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 12:30:09,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2018-07-24 12:30:09,320 INFO L87 Difference]: Start difference. First operand 100109 states and 122453 transitions. Second operand 12 states. [2018-07-24 12:30:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:30:31,885 INFO L93 Difference]: Finished difference Result 218332 states and 277981 transitions. [2018-07-24 12:30:31,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 12:30:31,886 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 418 [2018-07-24 12:30:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:30:32,370 INFO L225 Difference]: With dead ends: 218332 [2018-07-24 12:30:32,371 INFO L226 Difference]: Without dead ends: 124287 [2018-07-24 12:30:32,555 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1696 GetRequests, 1663 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2018-07-24 12:30:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124287 states. [2018-07-24 12:30:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124287 to 118337. [2018-07-24 12:30:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118337 states. [2018-07-24 12:30:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118337 states to 118337 states and 144108 transitions. [2018-07-24 12:30:35,353 INFO L78 Accepts]: Start accepts. Automaton has 118337 states and 144108 transitions. Word has length 418 [2018-07-24 12:30:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:30:35,354 INFO L471 AbstractCegarLoop]: Abstraction has 118337 states and 144108 transitions. [2018-07-24 12:30:35,354 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 12:30:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 118337 states and 144108 transitions. [2018-07-24 12:30:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-24 12:30:35,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:30:35,367 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:30:35,367 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:30:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1899606534, now seen corresponding path program 1 times [2018-07-24 12:30:35,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:30:35,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:30:35,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:30:35,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:30:35,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:30:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-24 12:30:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 53 proven. 441 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 12:30:37,522 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:30:37,522 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:30:37,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:30:37,529 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:30:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:30:37,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:30:37,714 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:30:37,915 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:30:37,915 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:30:37,920 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:30:37,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:30:37 BoogieIcfgContainer [2018-07-24 12:30:37,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:30:37,922 INFO L168 Benchmark]: Toolchain (without parser) took 234544.13 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -509.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,924 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:30:37,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1744.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 292.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,927 INFO L168 Benchmark]: Boogie Preprocessor took 977.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,928 INFO L168 Benchmark]: RCFGBuilder took 9280.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 492.3 MB). Peak memory consumption was 492.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,929 INFO L168 Benchmark]: TraceAbstraction took 222239.99 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -92.1 MB). Peak memory consumption was 982.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:37,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1744.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 292.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 977.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9280.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 492.3 MB). Peak memory consumption was 492.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222239.99 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -92.1 MB). Peak memory consumption was 982.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 38). Cancelled while BasicCegarLoop was analyzing trace of length 457 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.1s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 169.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3490 SDtfs, 48126 SDslu, 4459 SDs, 0 SdLazy, 54707 SolverSat, 12599 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 134.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6252 GetRequests, 5971 SyntacticMatches, 23 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5860 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118337occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 19536 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 36.1s InterpolantComputationTime, 5282 NumberOfCodeBlocks, 5282 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8255 ConstructedInterpolants, 389 QuantifiedInterpolants, 19076567 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4985 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 4041/6004 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/Problem17_label46_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-30-37-964.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label46_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-30-37-964.csv Completed graceful shutdown