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/Problem13_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:22:14,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:22:14,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:22:14,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:22:14,501 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:22:14,502 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:22:14,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:22:14,506 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:22:14,508 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:22:14,509 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:22:14,510 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:22:14,510 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:22:14,512 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:22:14,513 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:22:14,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:22:14,516 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:22:14,519 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:22:14,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:22:14,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:22:14,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:22:14,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:22:14,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:22:14,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:22:14,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:22:14,545 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:22:14,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:22:14,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:22:14,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:22:14,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:22:14,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:22:14,551 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:22:14,556 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:22:14,556 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:22:14,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:22:14,558 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:22:14,559 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:22:14,560 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:22:14,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:22:14,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:22:14,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:22:14,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:22:14,590 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:22:14,593 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:22:14,593 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:22:14,593 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:22:14,594 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:22:14,594 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:22:14,594 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:22:14,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:22:14,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:22:14,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:22:14,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:22:14,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:22:14,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:22:14,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:22:14,598 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:22:14,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:22:14,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:22:14,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:22:14,599 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:22:14,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:22:14,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:22:14,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:22:14,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:22:14,600 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:22:14,601 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:22:14,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:22:14,601 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:22:14,601 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:22:14,601 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:22:14,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:22:14,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:22:14,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:22:14,674 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:22:14,675 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:22:14,675 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-07-24 14:22:15,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708fbfba7/4ca575bb4fdc4522b9f631ce3125aba6/FLAG795c0e1ea [2018-07-24 14:22:15,532 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:22:15,533 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-07-24 14:22:15,577 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708fbfba7/4ca575bb4fdc4522b9f631ce3125aba6/FLAG795c0e1ea [2018-07-24 14:22:15,599 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708fbfba7/4ca575bb4fdc4522b9f631ce3125aba6 [2018-07-24 14:22:15,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:22:15,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:22:15,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:15,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:22:15,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:22:15,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:15" (1/1) ... [2018-07-24 14:22:15,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cca5ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:15, skipping insertion in model container [2018-07-24 14:22:15,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:15" (1/1) ... [2018-07-24 14:22:15,997 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:22:17,188 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:17,208 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:22:18,132 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:18,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18 WrapperNode [2018-07-24 14:22:18,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:18,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:22:18,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:22:18,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:22:18,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:18,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:18,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:22:18,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:22:18,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:22:18,824 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:22:19,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:19,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:19,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:19,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:20,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:20,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:20,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... [2018-07-24 14:22:20,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:22:20,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:22:20,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:22:20,450 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:22:20,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:22:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:22:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:22:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:22:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:22:20,532 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_output3 [2018-07-24 14:22:20,532 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_output3 [2018-07-24 14:22:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:22:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:22:20,532 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_output4 [2018-07-24 14:22:20,532 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_output4 [2018-07-24 14:22:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:22:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:22:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:22:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:22:33,914 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:22:33,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:22:33 BoogieIcfgContainer [2018-07-24 14:22:33,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:22:33,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:22:33,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:22:33,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:22:33,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:22:15" (1/3) ... [2018-07-24 14:22:33,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32853883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:22:33, skipping insertion in model container [2018-07-24 14:22:33,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:18" (2/3) ... [2018-07-24 14:22:33,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32853883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:22:33, skipping insertion in model container [2018-07-24 14:22:33,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:22:33" (3/3) ... [2018-07-24 14:22:33,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label46_true-unreach-call.c [2018-07-24 14:22:33,932 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:22:33,941 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:22:34,003 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:22:34,004 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:22:34,005 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:22:34,005 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:22:34,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:22:34,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:22:34,005 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:22:34,005 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:22:34,005 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:22:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:22:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-24 14:22:34,068 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:34,070 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:34,070 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash 894604953, now seen corresponding path program 1 times [2018-07-24 14:22:34,078 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:34,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:34,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:34,597 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:34,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:22:34,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:34,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:22:34,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:22:34,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:22:34,624 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 14:22:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:52,668 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-07-24 14:22:52,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:22:52,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-07-24 14:22:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:52,725 INFO L225 Difference]: With dead ends: 4105 [2018-07-24 14:22:52,725 INFO L226 Difference]: Without dead ends: 2979 [2018-07-24 14:22:52,740 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 14:22:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-07-24 14:22:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-07-24 14:22:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-07-24 14:22:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-07-24 14:22:52,959 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 73 [2018-07-24 14:22:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:52,960 INFO L471 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-07-24 14:22:52,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:22:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-07-24 14:22:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-24 14:22:52,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:52,985 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:52,986 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1495322345, now seen corresponding path program 1 times [2018-07-24 14:22:52,991 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:52,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:52,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:52,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:53,560 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:53,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:22:53,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:53,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:22:53,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:22:53,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:22:53,564 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-07-24 14:23:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:10,991 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-07-24 14:23:10,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:10,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-07-24 14:23:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:11,044 INFO L225 Difference]: With dead ends: 10635 [2018-07-24 14:23:11,044 INFO L226 Difference]: Without dead ends: 7792 [2018-07-24 14:23:11,063 INFO L573 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 [2018-07-24 14:23:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-07-24 14:23:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-07-24 14:23:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-07-24 14:23:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-07-24 14:23:11,284 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 144 [2018-07-24 14:23:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:11,284 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-07-24 14:23:11,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-07-24 14:23:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-24 14:23:11,288 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:11,289 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:11,289 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:11,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1011599580, now seen corresponding path program 1 times [2018-07-24 14:23:11,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:11,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:11,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:11,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:11,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:11,567 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:11,742 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:11,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:11,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:11,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:11,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:11,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:11,744 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-07-24 14:23:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:28,539 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-07-24 14:23:28,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:28,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-07-24 14:23:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:28,638 INFO L225 Difference]: With dead ends: 25316 [2018-07-24 14:23:28,638 INFO L226 Difference]: Without dead ends: 17593 [2018-07-24 14:23:28,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-07-24 14:23:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-07-24 14:23:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-07-24 14:23:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-07-24 14:23:29,175 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 147 [2018-07-24 14:23:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:29,175 INFO L471 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-07-24 14:23:29,175 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-07-24 14:23:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-24 14:23:29,188 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:29,188 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:29,188 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1751133017, now seen corresponding path program 1 times [2018-07-24 14:23:29,189 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:29,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:29,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:29,506 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:29,841 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:29,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:29,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:29,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:29,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:29,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:29,843 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-07-24 14:23:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:42,355 INFO L93 Difference]: Finished difference Result 45753 states and 75639 transitions. [2018-07-24 14:23:42,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:42,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-07-24 14:23:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:42,516 INFO L225 Difference]: With dead ends: 45753 [2018-07-24 14:23:42,516 INFO L226 Difference]: Without dead ends: 28241 [2018-07-24 14:23:42,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28241 states. [2018-07-24 14:23:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28241 to 28077. [2018-07-24 14:23:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28077 states. [2018-07-24 14:23:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28077 states to 28077 states and 42424 transitions. [2018-07-24 14:23:43,296 INFO L78 Accepts]: Start accepts. Automaton has 28077 states and 42424 transitions. Word has length 211 [2018-07-24 14:23:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:43,297 INFO L471 AbstractCegarLoop]: Abstraction has 28077 states and 42424 transitions. [2018-07-24 14:23:43,297 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 28077 states and 42424 transitions. [2018-07-24 14:23:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-24 14:23:43,315 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:43,315 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:43,315 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1366876181, now seen corresponding path program 1 times [2018-07-24 14:23:43,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:43,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:43,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:43,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:43,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 132 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:43,840 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:43,841 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:23:43,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:43,862 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:44,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:23:44,263 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 132 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:45,245 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:23:45,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 14:23:45,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:45,246 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:23:45,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:23:45,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:45,247 INFO L87 Difference]: Start difference. First operand 28077 states and 42424 transitions. Second operand 5 states. [2018-07-24 14:24:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:00,809 INFO L93 Difference]: Finished difference Result 81485 states and 137105 transitions. [2018-07-24 14:24:00,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:24:00,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2018-07-24 14:24:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:01,137 INFO L225 Difference]: With dead ends: 81485 [2018-07-24 14:24:01,137 INFO L226 Difference]: Without dead ends: 53414 [2018-07-24 14:24:01,245 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 468 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:24:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53414 states. [2018-07-24 14:24:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53414 to 53118. [2018-07-24 14:24:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53118 states. [2018-07-24 14:24:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53118 states to 53118 states and 80400 transitions. [2018-07-24 14:24:03,019 INFO L78 Accepts]: Start accepts. Automaton has 53118 states and 80400 transitions. Word has length 235 [2018-07-24 14:24:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:03,019 INFO L471 AbstractCegarLoop]: Abstraction has 53118 states and 80400 transitions. [2018-07-24 14:24:03,019 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:24:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 53118 states and 80400 transitions. [2018-07-24 14:24:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 14:24:03,054 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:03,055 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:03,055 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1520188611, now seen corresponding path program 1 times [2018-07-24 14:24:03,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:03,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:03,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:03,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:03,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:03,419 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:24:03,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:24:03,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:03,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:24:03,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:24:03,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:24:03,420 INFO L87 Difference]: Start difference. First operand 53118 states and 80400 transitions. Second operand 6 states. [2018-07-24 14:24:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:17,812 INFO L93 Difference]: Finished difference Result 133951 states and 218201 transitions. [2018-07-24 14:24:17,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:24:17,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 273 [2018-07-24 14:24:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:18,218 INFO L225 Difference]: With dead ends: 133951 [2018-07-24 14:24:18,218 INFO L226 Difference]: Without dead ends: 80839 [2018-07-24 14:24:18,405 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 14:24:18,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80839 states. [2018-07-24 14:24:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80839 to 80529. [2018-07-24 14:24:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80529 states. [2018-07-24 14:24:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80529 states to 80529 states and 121522 transitions. [2018-07-24 14:24:20,796 INFO L78 Accepts]: Start accepts. Automaton has 80529 states and 121522 transitions. Word has length 273 [2018-07-24 14:24:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:20,796 INFO L471 AbstractCegarLoop]: Abstraction has 80529 states and 121522 transitions. [2018-07-24 14:24:20,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:24:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 80529 states and 121522 transitions. [2018-07-24 14:24:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-24 14:24:20,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:20,820 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:20,821 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:20,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2096366713, now seen corresponding path program 1 times [2018-07-24 14:24:20,821 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:20,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:20,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:20,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:20,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 209 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:21,489 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:21,489 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:21,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:21,499 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:21,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:24:21,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:24:21,902 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:24:21,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-07-24 14:24:21,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:21,903 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:21,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:21,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:24:21,904 INFO L87 Difference]: Start difference. First operand 80529 states and 121522 transitions. Second operand 3 states. [2018-07-24 14:24:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:31,304 INFO L93 Difference]: Finished difference Result 186085 states and 289544 transitions. [2018-07-24 14:24:31,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:24:31,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 284 [2018-07-24 14:24:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:31,734 INFO L225 Difference]: With dead ends: 186085 [2018-07-24 14:24:31,735 INFO L226 Difference]: Without dead ends: 105562 [2018-07-24 14:24:31,884 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:24:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105562 states. [2018-07-24 14:24:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105562 to 104745. [2018-07-24 14:24:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104745 states. [2018-07-24 14:24:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104745 states to 104745 states and 146838 transitions. [2018-07-24 14:24:33,739 INFO L78 Accepts]: Start accepts. Automaton has 104745 states and 146838 transitions. Word has length 284 [2018-07-24 14:24:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:33,740 INFO L471 AbstractCegarLoop]: Abstraction has 104745 states and 146838 transitions. [2018-07-24 14:24:33,740 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:24:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 104745 states and 146838 transitions. [2018-07-24 14:24:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-24 14:24:33,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:33,812 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 14:24:33,812 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash 632416781, now seen corresponding path program 1 times [2018-07-24 14:24:33,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:33,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:33,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:33,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:33,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-07-24 14:24:34,229 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:24:34,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:24:34,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:34,230 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:24:34,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:24:34,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:24:34,230 INFO L87 Difference]: Start difference. First operand 104745 states and 146838 transitions. Second operand 4 states. [2018-07-24 14:24:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:47,285 INFO L93 Difference]: Finished difference Result 232089 states and 335742 transitions. [2018-07-24 14:24:47,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:24:47,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2018-07-24 14:24:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:49,289 INFO L225 Difference]: With dead ends: 232089 [2018-07-24 14:24:49,289 INFO L226 Difference]: Without dead ends: 127350 [2018-07-24 14:24:49,500 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:24:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127350 states. [2018-07-24 14:24:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127350 to 127323. [2018-07-24 14:24:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127323 states. [2018-07-24 14:24:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127323 states to 127323 states and 173522 transitions. [2018-07-24 14:24:51,392 INFO L78 Accepts]: Start accepts. Automaton has 127323 states and 173522 transitions. Word has length 357 [2018-07-24 14:24:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:51,393 INFO L471 AbstractCegarLoop]: Abstraction has 127323 states and 173522 transitions. [2018-07-24 14:24:51,393 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:24:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 127323 states and 173522 transitions. [2018-07-24 14:24:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-24 14:24:51,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:51,490 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-07-24 14:24:51,490 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2141977844, now seen corresponding path program 1 times [2018-07-24 14:24:51,490 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:51,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:51,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:51,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:51,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:24:53,308 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:53,308 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 14:24:53,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:53,315 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:53,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-07-24 14:24:53,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 198 proven. 199 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 14:24:54,368 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:54,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:24:54,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:54,369 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:54,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:54,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:24:54,369 INFO L87 Difference]: Start difference. First operand 127323 states and 173522 transitions. Second operand 5 states. [2018-07-24 14:25:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:18,348 INFO L93 Difference]: Finished difference Result 303973 states and 412509 transitions. [2018-07-24 14:25:18,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:25:18,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2018-07-24 14:25:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:18,779 INFO L225 Difference]: With dead ends: 303973 [2018-07-24 14:25:18,780 INFO L226 Difference]: Without dead ends: 176656 [2018-07-24 14:25:18,986 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:25:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176656 states. [2018-07-24 14:25:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176656 to 176586. [2018-07-24 14:25:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176586 states. [2018-07-24 14:25:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176586 states to 176586 states and 227785 transitions. [2018-07-24 14:25:22,410 INFO L78 Accepts]: Start accepts. Automaton has 176586 states and 227785 transitions. Word has length 442 [2018-07-24 14:25:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:22,410 INFO L471 AbstractCegarLoop]: Abstraction has 176586 states and 227785 transitions. [2018-07-24 14:25:22,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 176586 states and 227785 transitions. [2018-07-24 14:25:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-07-24 14:25:22,522 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:22,523 INFO L353 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:22,523 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:22,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2083575373, now seen corresponding path program 1 times [2018-07-24 14:25:22,523 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:22,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:22,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:22,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:22,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:23,298 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:23,298 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:23,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:23,313 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:23,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:24,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:24,560 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:24,560 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:25:24,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:24,576 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:24,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:25,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:26,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:25:26,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:25:26,084 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:25:26,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:25:26,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:25:26,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:25:26,086 INFO L87 Difference]: Start difference. First operand 176586 states and 227785 transitions. Second operand 9 states. [2018-07-24 14:25:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:48,632 INFO L93 Difference]: Finished difference Result 373598 states and 508938 transitions. [2018-07-24 14:25:48,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 14:25:48,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 475 [2018-07-24 14:25:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:49,865 INFO L225 Difference]: With dead ends: 373598 [2018-07-24 14:25:49,865 INFO L226 Difference]: Without dead ends: 197018 [2018-07-24 14:25:50,113 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1928 GetRequests, 1902 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:25:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197018 states. [2018-07-24 14:25:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197018 to 196779. [2018-07-24 14:25:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196779 states. [2018-07-24 14:25:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196779 states to 196779 states and 257347 transitions. [2018-07-24 14:25:53,459 INFO L78 Accepts]: Start accepts. Automaton has 196779 states and 257347 transitions. Word has length 475 [2018-07-24 14:25:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:53,460 INFO L471 AbstractCegarLoop]: Abstraction has 196779 states and 257347 transitions. [2018-07-24 14:25:53,461 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:25:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 196779 states and 257347 transitions. [2018-07-24 14:25:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-07-24 14:25:53,560 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:53,560 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:53,560 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash 445661166, now seen corresponding path program 1 times [2018-07-24 14:25:53,561 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:53,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:53,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:53,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:53,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:25:54,940 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:54,940 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:54,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:54,948 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:55,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-07-24 14:25:55,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-07-24 14:25:55,673 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:25:55,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 14:25:55,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:55,674 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:25:55,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:25:55,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:25:55,675 INFO L87 Difference]: Start difference. First operand 196779 states and 257347 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 14:25:57,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:57,090 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:25:57,096 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:25:57,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:25:57 BoogieIcfgContainer [2018-07-24 14:25:57,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:25:57,097 INFO L168 Benchmark]: Toolchain (without parser) took 221485.33 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -427.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,099 INFO L168 Benchmark]: CDTParser took 0.25 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 14:25:57,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2894.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,101 INFO L168 Benchmark]: Boogie Preprocessor took 1625.60 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 992.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,102 INFO L168 Benchmark]: RCFGBuilder took 13465.30 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 177.7 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.9 MB). Peak memory consumption was 777.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,103 INFO L168 Benchmark]: TraceAbstraction took 203180.96 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 469.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:57,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2894.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1625.60 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 992.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13465.30 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 177.7 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.9 MB). Peak memory consumption was 777.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203180.96 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 469.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 210]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 210). Cancelled while BasicCegarLoop was constructing difference of abstraction (196779states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (18912 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.1s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 171.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6382 SDtfs, 41147 SDslu, 5001 SDs, 0 SdLazy, 61193 SolverSat, 16198 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 136.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4957 GetRequests, 4855 SyntacticMatches, 12 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196779occurred 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: 16.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 2191 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 5576 NumberOfCodeBlocks, 5576 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7976 ConstructedInterpolants, 0 QuantifiedInterpolants, 8663051 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4020 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 8239/8599 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/Problem13_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-25-57-123.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-25-57-123.csv Completed graceful shutdown