java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:27:19,401 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:27:19,403 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:27:19,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:27:19,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:27:19,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:27:19,418 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:27:19,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:27:19,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:27:19,422 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:27:19,423 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:27:19,423 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:27:19,424 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:27:19,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:27:19,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:27:19,427 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:27:19,428 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:27:19,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:27:19,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:27:19,433 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:27:19,434 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:27:19,435 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:27:19,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:27:19,438 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:27:19,438 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:27:19,439 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:27:19,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:27:19,441 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:27:19,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:27:19,443 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:27:19,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:27:19,444 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:27:19,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:27:19,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:27:19,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:27:19,446 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:27:19,447 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:27:19,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:27:19,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:27:19,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:27:19,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:27:19,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:27:19,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:27:19,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:27:19,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:27:19,467 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:27:19,468 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:27:19,468 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:27:19,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:27:19,469 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:27:19,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:27:19,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:27:19,469 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:27:19,469 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:27:19,470 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:27:19,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:27:19,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:27:19,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:27:19,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:27:19,471 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:27:19,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:27:19,471 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:27:19,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:27:19,471 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:27:19,472 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:27:19,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:27:19,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:27:19,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:27:19,472 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:27:19,473 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:27:19,517 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:27:19,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:27:19,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:27:19,541 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:27:19,541 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:27:19,542 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-09-10 12:27:19,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21275717e/4c2b80a3b2e5419dbf5ed1a0572907c4/FLAG8f2887768 [2018-09-10 12:27:20,419 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:27:20,420 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-09-10 12:27:20,459 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21275717e/4c2b80a3b2e5419dbf5ed1a0572907c4/FLAG8f2887768 [2018-09-10 12:27:20,476 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21275717e/4c2b80a3b2e5419dbf5ed1a0572907c4 [2018-09-10 12:27:20,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:27:20,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:27:20,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:27:20,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:27:20,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:27:20,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:27:20" (1/1) ... [2018-09-10 12:27:20,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd241c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:20, skipping insertion in model container [2018-09-10 12:27:20,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:27:20" (1/1) ... [2018-09-10 12:27:20,799 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:27:21,580 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:27:21,598 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:27:22,016 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:27:22,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22 WrapperNode [2018-09-10 12:27:22,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:27:22,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:27:22,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:27:22,243 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:27:22,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:22,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:22,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:27:22,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:27:22,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:27:22,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:27:23,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... [2018-09-10 12:27:23,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:27:23,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:27:23,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:27:23,395 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:27:23,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:27:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:27:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:27:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:27:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:27:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:27:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:27:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:27:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:27:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:27:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:27:33,323 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:27:33,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:27:33 BoogieIcfgContainer [2018-09-10 12:27:33,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:27:33,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:27:33,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:27:33,328 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:27:33,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:27:20" (1/3) ... [2018-09-10 12:27:33,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b53207b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:27:33, skipping insertion in model container [2018-09-10 12:27:33,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:27:22" (2/3) ... [2018-09-10 12:27:33,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b53207b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:27:33, skipping insertion in model container [2018-09-10 12:27:33,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:27:33" (3/3) ... [2018-09-10 12:27:33,332 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22_true-unreach-call.c [2018-09-10 12:27:33,341 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:27:33,349 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:27:33,406 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:27:33,407 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:27:33,407 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:27:33,408 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:27:33,408 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:27:33,408 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:27:33,408 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:27:33,408 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:27:33,409 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:27:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:27:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-10 12:27:33,463 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:27:33,465 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:27:33,466 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:27:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash -583014284, now seen corresponding path program 1 times [2018-09-10 12:27:33,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:27:33,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:33,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:27:33,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:33,528 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:27:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:27:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:27:33,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:27:33,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:27:33,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:27:33,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:27:33,972 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:27:33,973 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:27:33,975 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:27:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:27:43,729 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-09-10 12:27:43,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:27:43,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-10 12:27:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:27:43,770 INFO L225 Difference]: With dead ends: 2162 [2018-09-10 12:27:43,771 INFO L226 Difference]: Without dead ends: 1552 [2018-09-10 12:27:43,782 INFO L604 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 [2018-09-10 12:27:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-09-10 12:27:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-09-10 12:27:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-09-10 12:27:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-09-10 12:27:43,950 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 58 [2018-09-10 12:27:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:27:43,951 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-09-10 12:27:43,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:27:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-09-10 12:27:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-10 12:27:43,961 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:27:43,962 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:27:43,962 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:27:43,962 INFO L82 PathProgramCache]: Analyzing trace with hash 468896061, now seen corresponding path program 1 times [2018-09-10 12:27:43,962 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:27:43,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:43,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:27:43,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:43,964 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:27:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:27:44,364 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:27:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:27:44,412 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:27:44,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:27:44,413 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:27:44,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:27:44,415 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:27:44,415 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:27:44,416 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-09-10 12:27:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:27:53,103 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-09-10 12:27:53,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:27:53,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-10 12:27:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:27:53,131 INFO L225 Difference]: With dead ends: 4431 [2018-09-10 12:27:53,131 INFO L226 Difference]: Without dead ends: 2912 [2018-09-10 12:27:53,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:27:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-09-10 12:27:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-09-10 12:27:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-09-10 12:27:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-09-10 12:27:53,256 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 137 [2018-09-10 12:27:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:27:53,256 INFO L480 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-09-10 12:27:53,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:27:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-09-10 12:27:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-10 12:27:53,266 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:27:53,266 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:27:53,267 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:27:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash -682514670, now seen corresponding path program 1 times [2018-09-10 12:27:53,267 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:27:53,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:53,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:27:53,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:53,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:27:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:27:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:27:53,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:27:53,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:27:53,509 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:27:53,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:27:53,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:27:53,510 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:27:53,510 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-09-10 12:27:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:27:59,304 INFO L93 Difference]: Finished difference Result 7152 states and 11703 transitions. [2018-09-10 12:27:59,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:27:59,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-09-10 12:27:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:27:59,332 INFO L225 Difference]: With dead ends: 7152 [2018-09-10 12:27:59,332 INFO L226 Difference]: Without dead ends: 4280 [2018-09-10 12:27:59,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:27:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2018-09-10 12:27:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4238. [2018-09-10 12:27:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2018-09-10 12:27:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5870 transitions. [2018-09-10 12:27:59,487 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5870 transitions. Word has length 138 [2018-09-10 12:27:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:27:59,487 INFO L480 AbstractCegarLoop]: Abstraction has 4238 states and 5870 transitions. [2018-09-10 12:27:59,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:27:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5870 transitions. [2018-09-10 12:27:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-09-10 12:27:59,499 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:27:59,499 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:27:59,499 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:27:59,500 INFO L82 PathProgramCache]: Analyzing trace with hash 241635055, now seen corresponding path program 1 times [2018-09-10 12:27:59,500 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:27:59,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:59,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:27:59,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:27:59,502 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:27:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:27:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 12:27:59,833 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:27:59,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:27:59,833 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:27:59,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:27:59,835 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:27:59,835 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:27:59,835 INFO L87 Difference]: Start difference. First operand 4238 states and 5870 transitions. Second operand 3 states. [2018-09-10 12:28:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:28:05,435 INFO L93 Difference]: Finished difference Result 12466 states and 17703 transitions. [2018-09-10 12:28:05,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:28:05,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2018-09-10 12:28:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:28:05,481 INFO L225 Difference]: With dead ends: 12466 [2018-09-10 12:28:05,481 INFO L226 Difference]: Without dead ends: 8234 [2018-09-10 12:28:05,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:28:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2018-09-10 12:28:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 8232. [2018-09-10 12:28:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8232 states. [2018-09-10 12:28:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 10655 transitions. [2018-09-10 12:28:05,724 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 10655 transitions. Word has length 225 [2018-09-10 12:28:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:28:05,725 INFO L480 AbstractCegarLoop]: Abstraction has 8232 states and 10655 transitions. [2018-09-10 12:28:05,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:28:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 10655 transitions. [2018-09-10 12:28:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-10 12:28:05,736 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:28:05,739 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:28:05,740 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:28:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2054407215, now seen corresponding path program 1 times [2018-09-10 12:28:05,740 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:28:05,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:05,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:28:05,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:05,742 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:28:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:28:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 12:28:06,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:28:06,711 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:28:06,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:28:06,730 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:28:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:28:06,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:28:07,391 WARN L175 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-10 12:28:07,753 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-09-10 12:28:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-10 12:28:08,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:28:13,125 WARN L175 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-10 12:28:13,537 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-10 12:28:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:28:14,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:28:14,714 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:28:14,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:28:14,740 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:28:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:28:15,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:28:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:28:15,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:28:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:28:16,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:28:16,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 7, 8] total 27 [2018-09-10 12:28:16,692 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:28:16,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 12:28:16,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 12:28:16,694 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2018-09-10 12:28:16,695 INFO L87 Difference]: Start difference. First operand 8232 states and 10655 transitions. Second operand 14 states. [2018-09-10 12:28:17,708 WARN L175 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-10 12:29:24,482 WARN L175 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-10 12:29:46,042 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-09-10 12:29:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:29:52,181 INFO L93 Difference]: Finished difference Result 78613 states and 133540 transitions. [2018-09-10 12:29:52,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-09-10 12:29:52,182 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 288 [2018-09-10 12:29:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:29:52,926 INFO L225 Difference]: With dead ends: 78613 [2018-09-10 12:29:52,927 INFO L226 Difference]: Without dead ends: 69875 [2018-09-10 12:29:53,417 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1133 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11632 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=4719, Invalid=26081, Unknown=0, NotChecked=0, Total=30800 [2018-09-10 12:29:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69875 states. [2018-09-10 12:29:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69875 to 66519. [2018-09-10 12:29:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66519 states. [2018-09-10 12:29:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66519 states to 66519 states and 89198 transitions. [2018-09-10 12:29:57,250 INFO L78 Accepts]: Start accepts. Automaton has 66519 states and 89198 transitions. Word has length 288 [2018-09-10 12:29:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:29:57,250 INFO L480 AbstractCegarLoop]: Abstraction has 66519 states and 89198 transitions. [2018-09-10 12:29:57,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 12:29:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 66519 states and 89198 transitions. [2018-09-10 12:29:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-10 12:29:57,320 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:29:57,321 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:29:57,321 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:29:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1253185843, now seen corresponding path program 1 times [2018-09-10 12:29:57,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:29:57,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:57,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:57,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:57,323 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:29:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-10 12:29:57,640 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:29:57,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:29:57,641 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:29:57,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:29:57,641 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:29:57,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:29:57,642 INFO L87 Difference]: Start difference. First operand 66519 states and 89198 transitions. Second operand 3 states. [2018-09-10 12:30:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:30:04,638 INFO L93 Difference]: Finished difference Result 159985 states and 226961 transitions. [2018-09-10 12:30:04,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:30:04,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-09-10 12:30:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:30:06,035 INFO L225 Difference]: With dead ends: 159985 [2018-09-10 12:30:06,036 INFO L226 Difference]: Without dead ends: 93481 [2018-09-10 12:30:06,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:30:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93481 states. [2018-09-10 12:30:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93481 to 93453. [2018-09-10 12:30:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93453 states. [2018-09-10 12:30:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93453 states to 93453 states and 125681 transitions. [2018-09-10 12:30:10,222 INFO L78 Accepts]: Start accepts. Automaton has 93453 states and 125681 transitions. Word has length 293 [2018-09-10 12:30:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:30:10,223 INFO L480 AbstractCegarLoop]: Abstraction has 93453 states and 125681 transitions. [2018-09-10 12:30:10,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:30:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 93453 states and 125681 transitions. [2018-09-10 12:30:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-10 12:30:10,359 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:30:10,359 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:30:10,359 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:30:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash -883867454, now seen corresponding path program 1 times [2018-09-10 12:30:10,360 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:30:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:10,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:10,361 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:30:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:11,120 WARN L175 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-09-10 12:30:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 161 proven. 245 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-10 12:30:11,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:30:11,750 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:30:11,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:11,759 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:30:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:11,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:30:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-10 12:30:12,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:30:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 153 proven. 177 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:30:12,536 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:30:12,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-10 12:30:12,536 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:30:12,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:30:12,537 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:30:12,537 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:30:12,538 INFO L87 Difference]: Start difference. First operand 93453 states and 125681 transitions. Second operand 5 states. [2018-09-10 12:30:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:30:26,491 INFO L93 Difference]: Finished difference Result 201976 states and 261195 transitions. [2018-09-10 12:30:26,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:30:26,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2018-09-10 12:30:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:30:26,914 INFO L225 Difference]: With dead ends: 201976 [2018-09-10 12:30:26,914 INFO L226 Difference]: Without dead ends: 108533 [2018-09-10 12:30:27,384 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:30:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108533 states. [2018-09-10 12:30:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108533 to 107750. [2018-09-10 12:30:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107750 states. [2018-09-10 12:30:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107750 states to 107750 states and 131298 transitions. [2018-09-10 12:30:30,744 INFO L78 Accepts]: Start accepts. Automaton has 107750 states and 131298 transitions. Word has length 370 [2018-09-10 12:30:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:30:30,744 INFO L480 AbstractCegarLoop]: Abstraction has 107750 states and 131298 transitions. [2018-09-10 12:30:30,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:30:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 107750 states and 131298 transitions. [2018-09-10 12:30:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-09-10 12:30:30,844 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:30:30,844 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-09-10 12:30:30,845 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:30:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash 915087443, now seen corresponding path program 1 times [2018-09-10 12:30:30,845 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:30:30,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:30,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:30,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:30,847 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:30:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-09-10 12:30:31,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:30:31,399 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:30:31,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:31,417 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:30:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:31,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:30:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-09-10 12:30:31,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:30:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-09-10 12:30:32,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:30:32,080 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:30:32,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:32,096 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:30:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:32,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:30:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 404 proven. 98 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-09-10 12:30:32,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:30:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 498 proven. 4 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-09-10 12:30:32,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:30:32,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 4, 4] total 11 [2018-09-10 12:30:32,892 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:30:32,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:30:32,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:30:32,894 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:30:32,894 INFO L87 Difference]: Start difference. First operand 107750 states and 131298 transitions. Second operand 6 states. [2018-09-10 12:30:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:30:49,523 INFO L93 Difference]: Finished difference Result 253580 states and 322772 transitions. [2018-09-10 12:30:49,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:30:49,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 400 [2018-09-10 12:30:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:30:50,166 INFO L225 Difference]: With dead ends: 253580 [2018-09-10 12:30:50,167 INFO L226 Difference]: Without dead ends: 145836 [2018-09-10 12:30:51,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1613 GetRequests, 1596 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:30:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145836 states. [2018-09-10 12:30:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145836 to 143588. [2018-09-10 12:30:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143588 states. [2018-09-10 12:31:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143588 states to 143588 states and 177197 transitions. [2018-09-10 12:31:01,064 INFO L78 Accepts]: Start accepts. Automaton has 143588 states and 177197 transitions. Word has length 400 [2018-09-10 12:31:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:01,065 INFO L480 AbstractCegarLoop]: Abstraction has 143588 states and 177197 transitions. [2018-09-10 12:31:01,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:31:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 143588 states and 177197 transitions. [2018-09-10 12:31:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-09-10 12:31:01,154 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:01,155 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:31:01,155 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1057986989, now seen corresponding path program 1 times [2018-09-10 12:31:01,156 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:01,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:01,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:01,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:01,157 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 390 proven. 49 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-09-10 12:31:01,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:01,752 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:31:01,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:01,761 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:01,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:31:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 510 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-10 12:31:02,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:31:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 287 proven. 183 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-09-10 12:31:02,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:02,646 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:31:02,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:02,662 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:03,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:31:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-09-10 12:31:03,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:31:04,534 WARN L175 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:31:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 217 proven. 317 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-10 12:31:05,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:31:05,375 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-10 12:31:05,375 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:31:05,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:31:05,376 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:31:05,377 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:31:05,377 INFO L87 Difference]: Start difference. First operand 143588 states and 177197 transitions. Second operand 10 states. Received shutdown request... [2018-09-10 12:31:06,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:31:06,132 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:31:06,138 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:31:06,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:31:06 BoogieIcfgContainer [2018-09-10 12:31:06,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:31:06,141 INFO L168 Benchmark]: Toolchain (without parser) took 225649.62 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:31:06,142 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:31:06,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1744.86 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. [2018-09-10 12:31:06,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.88 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:31:06,143 INFO L168 Benchmark]: Boogie Preprocessor took 836.79 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 926.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:31:06,144 INFO L168 Benchmark]: RCFGBuilder took 9930.07 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 498.1 MB). Peak memory consumption was 498.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:31:06,145 INFO L168 Benchmark]: TraceAbstraction took 212814.66 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.8 GB in the beginning and 3.2 GB in the end (delta: -1.4 GB). Peak memory consumption was 717.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:31:06,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1744.86 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 313.88 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 836.79 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 926.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9930.07 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 498.1 MB). Peak memory consumption was 498.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212814.66 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.8 GB in the beginning and 3.2 GB in the end (delta: -1.4 GB). Peak memory consumption was 717.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 161). Cancelled while BasicCegarLoop was constructing difference of abstraction (143588states) and FLOYD_HOARE automaton (currently 8 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (240 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 212.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 169.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2964 SDtfs, 27792 SDslu, 3757 SDs, 0 SdLazy, 50709 SolverSat, 11344 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 133.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5503 GetRequests, 5254 SyntacticMatches, 11 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11751 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143588occurred in iteration=8, 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: 21.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6520 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 4990 NumberOfCodeBlocks, 4990 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7603 ConstructedInterpolants, 191 QuantifiedInterpolants, 10446873 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4339 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 8059/9446 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_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-31-06-163.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-31-06-163.csv Completed graceful shutdown