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/Problem12_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:07:15,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:07:15,658 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:07:15,670 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:07:15,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:07:15,672 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:07:15,673 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:07:15,675 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:07:15,677 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:07:15,678 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:07:15,679 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:07:15,679 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:07:15,680 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:07:15,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:07:15,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:07:15,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:07:15,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:07:15,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:07:15,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:07:15,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:07:15,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:07:15,693 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:07:15,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:07:15,696 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:07:15,696 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:07:15,697 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:07:15,699 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:07:15,700 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:07:15,700 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:07:15,702 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:07:15,702 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:07:15,703 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:07:15,703 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:07:15,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:07:15,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:07:15,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:07:15,706 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 14:07:15,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:07:15,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:07:15,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:07:15,724 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:07:15,724 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:07:15,724 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:07:15,724 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:07:15,725 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:07:15,725 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:07:15,725 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:07:15,725 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:07:15,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:07:15,726 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:07:15,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:07:15,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:07:15,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:07:15,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:07:15,727 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:07:15,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:07:15,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:07:15,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:07:15,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:07:15,728 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:07:15,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:07:15,729 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:07:15,729 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:07:15,729 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:07:15,729 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:07:15,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:07:15,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:07:15,730 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:07:15,730 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:07:15,730 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:07:15,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:07:15,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:07:15,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:07:15,792 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:07:15,793 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:07:15,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-07-24 14:07:16,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1d09b9/05297b4d0a5f4c019f45a0a7fb256542/FLAG9593723d1 [2018-07-24 14:07:16,600 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:07:16,601 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-07-24 14:07:16,637 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1d09b9/05297b4d0a5f4c019f45a0a7fb256542/FLAG9593723d1 [2018-07-24 14:07:16,653 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1d09b9/05297b4d0a5f4c019f45a0a7fb256542 [2018-07-24 14:07:16,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:07:16,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:07:16,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:07:16,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:07:16,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:07:16,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:07:16" (1/1) ... [2018-07-24 14:07:16,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a23633c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:16, skipping insertion in model container [2018-07-24 14:07:16,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:07:16" (1/1) ... [2018-07-24 14:07:17,002 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:07:18,019 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:07:18,036 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:07:19,183 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:07:19,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19 WrapperNode [2018-07-24 14:07:19,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:07:19,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:07:19,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:07:19,426 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:07:19,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:19,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:19,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:07:19,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:07:19,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:07:19,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:07:20,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (1/1) ... [2018-07-24 14:07:20,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:07:20,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:07:20,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:07:20,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:07:20,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (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 14:07:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:07:20,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:07:20,699 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 14:07:20,700 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 14:07:20,700 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 14:07:20,700 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 14:07:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:07:20,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:07:20,701 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 14:07:20,701 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 14:07:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:07:20,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:07:20,701 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 14:07:20,702 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 14:07:33,733 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:07:33,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:07:33 BoogieIcfgContainer [2018-07-24 14:07:33,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:07:33,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:07:33,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:07:33,744 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:07:33,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:07:16" (1/3) ... [2018-07-24 14:07:33,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b26eb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:07:33, skipping insertion in model container [2018-07-24 14:07:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:07:19" (2/3) ... [2018-07-24 14:07:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b26eb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:07:33, skipping insertion in model container [2018-07-24 14:07:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:07:33" (3/3) ... [2018-07-24 14:07:33,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-07-24 14:07:33,757 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:07:33,767 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:07:33,829 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:07:33,830 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:07:33,831 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:07:33,831 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:07:33,831 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:07:33,831 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:07:33,831 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:07:33,831 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:07:33,831 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:07:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:07:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-24 14:07:33,889 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:33,890 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 14:07:33,891 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 14:07:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1136778087, now seen corresponding path program 1 times [2018-07-24 14:07:33,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:33,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:33,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:33,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:33,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:34,432 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:07:34,634 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 14:07:34,637 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:07:34,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:07:34,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:34,642 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:07:34,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:07:34,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:07:34,658 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:07:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:07:42,940 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:07:42,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:07:42,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-07-24 14:07:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:07:42,975 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:07:42,975 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:07:42,990 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:07:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:07:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:07:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:07:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-24 14:07:43,166 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 73 [2018-07-24 14:07:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:07:43,167 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-24 14:07:43,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:07:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-24 14:07:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-24 14:07:43,177 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:43,177 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 14:07:43,178 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 14:07:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash -33081070, now seen corresponding path program 1 times [2018-07-24 14:07:43,178 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:43,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:43,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:43,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:43,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:43,568 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:07:43,983 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 14:07:43,983 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:07:43,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:07:43,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:43,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:07:43,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:07:43,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:07:43,988 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-07-24 14:08:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:03,572 INFO L93 Difference]: Finished difference Result 6332 states and 11920 transitions. [2018-07-24 14:08:03,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:08:03,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-07-24 14:08:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:03,608 INFO L225 Difference]: With dead ends: 6332 [2018-07-24 14:08:03,609 INFO L226 Difference]: Without dead ends: 4734 [2018-07-24 14:08:03,618 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:08:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2018-07-24 14:08:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4702. [2018-07-24 14:08:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-07-24 14:08:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7575 transitions. [2018-07-24 14:08:03,772 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7575 transitions. Word has length 147 [2018-07-24 14:08:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:03,773 INFO L471 AbstractCegarLoop]: Abstraction has 4702 states and 7575 transitions. [2018-07-24 14:08:03,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:08:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7575 transitions. [2018-07-24 14:08:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-24 14:08:03,779 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:03,779 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] [2018-07-24 14:08:03,779 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 14:08:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1674359434, now seen corresponding path program 1 times [2018-07-24 14:08:03,780 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:03,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:03,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:03,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:03,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:03,964 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 14:08:03,964 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:03,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:08:03,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:03,965 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:08:03,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:08:03,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:08:03,966 INFO L87 Difference]: Start difference. First operand 4702 states and 7575 transitions. Second operand 4 states. [2018-07-24 14:08:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:14,839 INFO L93 Difference]: Finished difference Result 18600 states and 30815 transitions. [2018-07-24 14:08:14,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:08:14,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-07-24 14:08:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:14,926 INFO L225 Difference]: With dead ends: 18600 [2018-07-24 14:08:14,926 INFO L226 Difference]: Without dead ends: 13904 [2018-07-24 14:08:14,955 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:08:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13904 states. [2018-07-24 14:08:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13904 to 13904. [2018-07-24 14:08:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13904 states. [2018-07-24 14:08:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13904 states to 13904 states and 21835 transitions. [2018-07-24 14:08:15,334 INFO L78 Accepts]: Start accepts. Automaton has 13904 states and 21835 transitions. Word has length 149 [2018-07-24 14:08:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:15,334 INFO L471 AbstractCegarLoop]: Abstraction has 13904 states and 21835 transitions. [2018-07-24 14:08:15,334 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:08:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13904 states and 21835 transitions. [2018-07-24 14:08:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-24 14:08:15,348 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:15,349 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] [2018-07-24 14:08:15,349 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 14:08:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1785422050, now seen corresponding path program 1 times [2018-07-24 14:08:15,350 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:15,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:15,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:15,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:15,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:15,733 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:08:16,158 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 14:08:16,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:16,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:08:16,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:16,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:08:16,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:08:16,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:08:16,160 INFO L87 Difference]: Start difference. First operand 13904 states and 21835 transitions. Second operand 6 states. [2018-07-24 14:08:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:27,024 INFO L93 Difference]: Finished difference Result 32821 states and 53735 transitions. [2018-07-24 14:08:27,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:08:27,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-07-24 14:08:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:27,110 INFO L225 Difference]: With dead ends: 32821 [2018-07-24 14:08:27,110 INFO L226 Difference]: Without dead ends: 18923 [2018-07-24 14:08:27,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:08:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18923 states. [2018-07-24 14:08:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18923 to 18819. [2018-07-24 14:08:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18819 states. [2018-07-24 14:08:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18819 states to 18819 states and 28914 transitions. [2018-07-24 14:08:27,569 INFO L78 Accepts]: Start accepts. Automaton has 18819 states and 28914 transitions. Word has length 187 [2018-07-24 14:08:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:27,570 INFO L471 AbstractCegarLoop]: Abstraction has 18819 states and 28914 transitions. [2018-07-24 14:08:27,570 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:08:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18819 states and 28914 transitions. [2018-07-24 14:08:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-24 14:08:27,601 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:27,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:27,602 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 14:08:27,602 INFO L82 PathProgramCache]: Analyzing trace with hash -84335645, now seen corresponding path program 1 times [2018-07-24 14:08:27,602 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:27,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:27,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:27,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:27,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:27,936 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:08:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 133 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 14:08:28,287 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:28,287 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 14:08:28,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:28,299 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:28,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:08:29,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:08:30,163 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:08:30,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 14 [2018-07-24 14:08:30,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:30,164 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:30,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:30,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:08:30,165 INFO L87 Difference]: Start difference. First operand 18819 states and 28914 transitions. Second operand 5 states. [2018-07-24 14:08:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:50,535 INFO L93 Difference]: Finished difference Result 63880 states and 102262 transitions. [2018-07-24 14:08:50,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:08:50,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2018-07-24 14:08:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:50,747 INFO L225 Difference]: With dead ends: 63880 [2018-07-24 14:08:50,748 INFO L226 Difference]: Without dead ends: 45067 [2018-07-24 14:08:50,880 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 588 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:08:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45067 states. [2018-07-24 14:08:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45067 to 44881. [2018-07-24 14:08:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44881 states. [2018-07-24 14:08:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44881 states to 44881 states and 63042 transitions. [2018-07-24 14:08:52,196 INFO L78 Accepts]: Start accepts. Automaton has 44881 states and 63042 transitions. Word has length 297 [2018-07-24 14:08:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:52,197 INFO L471 AbstractCegarLoop]: Abstraction has 44881 states and 63042 transitions. [2018-07-24 14:08:52,197 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:08:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 44881 states and 63042 transitions. [2018-07-24 14:08:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 14:08:52,250 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:52,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:52,250 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 14:08:52,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2037878743, now seen corresponding path program 1 times [2018-07-24 14:08:52,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:52,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:52,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:52,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:52,252 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 132 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:52,671 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:52,671 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 14:08:52,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:52,687 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:52,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:08:53,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:53,466 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:08:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 132 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:54,539 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:08:54,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:08:54,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:54,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:54,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:54,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:08:54,544 INFO L87 Difference]: Start difference. First operand 44881 states and 63042 transitions. Second operand 5 states. [2018-07-24 14:09:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:04,790 INFO L93 Difference]: Finished difference Result 129470 states and 191686 transitions. [2018-07-24 14:09:04,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:09:04,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-07-24 14:09:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:05,135 INFO L225 Difference]: With dead ends: 129470 [2018-07-24 14:09:05,135 INFO L226 Difference]: Without dead ends: 84595 [2018-07-24 14:09:05,250 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:09:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84595 states. [2018-07-24 14:09:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84595 to 84336. [2018-07-24 14:09:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84336 states. [2018-07-24 14:09:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84336 states to 84336 states and 116883 transitions. [2018-07-24 14:09:07,380 INFO L78 Accepts]: Start accepts. Automaton has 84336 states and 116883 transitions. Word has length 307 [2018-07-24 14:09:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:07,381 INFO L471 AbstractCegarLoop]: Abstraction has 84336 states and 116883 transitions. [2018-07-24 14:09:07,381 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 84336 states and 116883 transitions. [2018-07-24 14:09:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-24 14:09:07,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:07,428 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:07,428 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 14:09:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash -141638454, now seen corresponding path program 1 times [2018-07-24 14:09:07,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:07,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:07,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:07,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:08,086 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:08,086 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 14:09:08,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:08,102 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:08,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:08,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:09,248 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:09,248 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:09,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:09,263 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:09,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:09,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:10,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:09:10,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 14:09:10,519 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:09:10,520 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:09:10,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:09:10,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:09:10,521 INFO L87 Difference]: Start difference. First operand 84336 states and 116883 transitions. Second operand 9 states. [2018-07-24 14:09:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:44,876 INFO L93 Difference]: Finished difference Result 204830 states and 336137 transitions. [2018-07-24 14:09:44,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-24 14:09:44,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 336 [2018-07-24 14:09:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:45,538 INFO L225 Difference]: With dead ends: 204830 [2018-07-24 14:09:45,538 INFO L226 Difference]: Without dead ends: 120500 [2018-07-24 14:09:45,881 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1416 GetRequests, 1357 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=636, Invalid=2786, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 14:09:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120500 states. [2018-07-24 14:09:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120500 to 119501. [2018-07-24 14:09:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119501 states. [2018-07-24 14:09:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119501 states to 119501 states and 166369 transitions. [2018-07-24 14:09:49,437 INFO L78 Accepts]: Start accepts. Automaton has 119501 states and 166369 transitions. Word has length 336 [2018-07-24 14:09:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:49,437 INFO L471 AbstractCegarLoop]: Abstraction has 119501 states and 166369 transitions. [2018-07-24 14:09:49,437 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:09:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 119501 states and 166369 transitions. [2018-07-24 14:09:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-24 14:09:49,503 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:49,504 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:09:49,504 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 14:09:49,504 INFO L82 PathProgramCache]: Analyzing trace with hash 692146535, now seen corresponding path program 1 times [2018-07-24 14:09:49,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:49,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:49,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:09:50,027 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:50,027 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:50,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:50,035 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:50,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:09:50,318 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:09:50,544 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:50,544 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:50,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:50,561 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:50,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:09:51,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:09:51,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:09:51,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:09:51,469 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:09:51,470 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:09:51,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:09:51,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:09:51,471 INFO L87 Difference]: Start difference. First operand 119501 states and 166369 transitions. Second operand 9 states. [2018-07-24 14:10:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:11,290 INFO L93 Difference]: Finished difference Result 260116 states and 381445 transitions. [2018-07-24 14:10:11,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:10:11,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 444 [2018-07-24 14:10:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:11,853 INFO L225 Difference]: With dead ends: 260116 [2018-07-24 14:10:11,853 INFO L226 Difference]: Without dead ends: 140621 [2018-07-24 14:10:12,063 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1794 GetRequests, 1772 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:10:12,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140621 states. [2018-07-24 14:10:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140621 to 140093. [2018-07-24 14:10:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140093 states. [2018-07-24 14:10:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140093 states to 140093 states and 189390 transitions. [2018-07-24 14:10:14,974 INFO L78 Accepts]: Start accepts. Automaton has 140093 states and 189390 transitions. Word has length 444 [2018-07-24 14:10:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:14,975 INFO L471 AbstractCegarLoop]: Abstraction has 140093 states and 189390 transitions. [2018-07-24 14:10:14,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:10:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 140093 states and 189390 transitions. [2018-07-24 14:10:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-07-24 14:10:15,062 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:15,063 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:10:15,063 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 14:10:15,063 INFO L82 PathProgramCache]: Analyzing trace with hash 347002442, now seen corresponding path program 1 times [2018-07-24 14:10:15,063 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:15,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:15,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:15,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:15,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-07-24 14:10:15,451 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:15,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:10:15,451 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:15,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:10:15,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:10:15,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:15,453 INFO L87 Difference]: Start difference. First operand 140093 states and 189390 transitions. Second operand 3 states. [2018-07-24 14:10:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:25,198 INFO L93 Difference]: Finished difference Result 301032 states and 415986 transitions. [2018-07-24 14:10:25,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:25,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 496 [2018-07-24 14:10:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:25,757 INFO L225 Difference]: With dead ends: 301032 [2018-07-24 14:10:25,757 INFO L226 Difference]: Without dead ends: 160950 [2018-07-24 14:10:25,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160950 states. [2018-07-24 14:10:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160950 to 154749. [2018-07-24 14:10:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154749 states. [2018-07-24 14:10:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154749 states to 154749 states and 204758 transitions. [2018-07-24 14:10:29,291 INFO L78 Accepts]: Start accepts. Automaton has 154749 states and 204758 transitions. Word has length 496 [2018-07-24 14:10:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:29,291 INFO L471 AbstractCegarLoop]: Abstraction has 154749 states and 204758 transitions. [2018-07-24 14:10:29,291 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:10:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 154749 states and 204758 transitions. [2018-07-24 14:10:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-07-24 14:10:29,453 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:29,453 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:29,453 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 14:10:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1737986760, now seen corresponding path program 1 times [2018-07-24 14:10:29,454 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:29,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:29,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:29,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:29,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:30,390 WARN L169 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2018-07-24 14:10:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 132 proven. 270 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:36,081 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:36,081 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:10:36,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:36,088 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:36,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:10:36,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 132 proven. 270 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:38,872 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:10:38,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-07-24 14:10:38,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:38,874 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:38,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:38,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:10:38,875 INFO L87 Difference]: Start difference. First operand 154749 states and 204758 transitions. Second operand 5 states. [2018-07-24 14:10:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:50,359 INFO L93 Difference]: Finished difference Result 316928 states and 421334 transitions. [2018-07-24 14:10:50,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:10:50,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 826 [2018-07-24 14:10:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:50,926 INFO L225 Difference]: With dead ends: 316928 [2018-07-24 14:10:50,927 INFO L226 Difference]: Without dead ends: 162190 [2018-07-24 14:10:51,563 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1647 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:10:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162190 states. [2018-07-24 14:10:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162190 to 161116. [2018-07-24 14:10:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161116 states. [2018-07-24 14:10:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161116 states to 161116 states and 211189 transitions. [2018-07-24 14:10:54,224 INFO L78 Accepts]: Start accepts. Automaton has 161116 states and 211189 transitions. Word has length 826 [2018-07-24 14:10:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:54,225 INFO L471 AbstractCegarLoop]: Abstraction has 161116 states and 211189 transitions. [2018-07-24 14:10:54,225 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:10:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 161116 states and 211189 transitions. [2018-07-24 14:10:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-07-24 14:10:54,350 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:54,351 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:54,351 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 14:10:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1612785479, now seen corresponding path program 1 times [2018-07-24 14:10:54,352 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:54,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:54,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:54,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:54,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:54,764 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:10:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 198 proven. 271 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:10:55,516 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:55,516 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:10:55,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:55,525 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:56,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:10:57,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 198 proven. 271 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:10:57,720 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:10:57,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:10:57,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:57,722 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:57,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:57,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:10:57,722 INFO L87 Difference]: Start difference. First operand 161116 states and 211189 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 14:10:59,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:10:59,483 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:10:59,490 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:10:59,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:10:59 BoogieIcfgContainer [2018-07-24 14:10:59,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:10:59,491 INFO L168 Benchmark]: Toolchain (without parser) took 222826.07 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,492 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:10:59,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2755.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 266.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,494 INFO L168 Benchmark]: Boogie Preprocessor took 929.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 917.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,495 INFO L168 Benchmark]: RCFGBuilder took 13113.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -108.9 MB). Peak memory consumption was 721.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,496 INFO L168 Benchmark]: TraceAbstraction took 205755.63 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -468.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 14:10:59,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2755.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 266.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 929.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 917.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13113.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -108.9 MB). Peak memory consumption was 721.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205755.63 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -468.3 MB). Peak memory consumption was 1.7 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 (161116states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (16180 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.6s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 162.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3929 SDtfs, 35187 SDslu, 2318 SDs, 0 SdLazy, 68498 SolverSat, 17018 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 128.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7808 GetRequests, 7646 SyntacticMatches, 23 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161116occurred 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: 16.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 9383 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 7916 NumberOfCodeBlocks, 7916 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11711 ConstructedInterpolants, 0 QuantifiedInterpolants, 26094347 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5698 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 7090/8360 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/Problem12_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-10-59-514.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-10-59-514.csv Completed graceful shutdown