java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:58:03,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:58:03,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:58:03,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:58:03,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:58:03,698 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:58:03,699 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:58:03,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:58:03,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:58:03,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:58:03,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:58:03,705 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:58:03,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:58:03,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:58:03,708 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:58:03,708 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:58:03,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:58:03,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:58:03,713 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:58:03,715 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:58:03,716 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:58:03,717 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:58:03,720 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:58:03,720 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:58:03,720 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:58:03,723 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:58:03,724 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:58:03,725 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:58:03,728 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:58:03,731 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:58:03,733 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:58:03,734 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:58:03,734 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:58:03,735 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:58:03,735 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:58:03,736 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:58:03,736 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:58:03,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:58:03,762 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:58:03,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:58:03,763 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:58:03,763 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:58:03,763 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:58:03,763 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:58:03,763 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:58:03,764 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:58:03,764 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:58:03,764 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:58:03,765 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:58:03,765 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:58:03,765 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:58:03,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:58:03,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:58:03,766 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:58:03,766 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:58:03,766 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:58:03,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:58:03,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:58:03,767 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:58:03,767 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:58:03,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:58:03,767 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:58:03,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:58:03,768 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:58:03,768 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:58:03,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:58:03,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:58:03,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:58:03,769 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:58:03,769 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:58:03,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:58:03,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:58:03,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:58:03,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:58:03,831 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:58:03,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-09-10 11:58:04,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d4e270b/b9829983b6d349fa9878a5815160882b/FLAG0936ac713 [2018-09-10 11:58:04,665 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:58:04,667 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-09-10 11:58:04,709 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d4e270b/b9829983b6d349fa9878a5815160882b/FLAG0936ac713 [2018-09-10 11:58:04,731 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d4e270b/b9829983b6d349fa9878a5815160882b [2018-09-10 11:58:04,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:58:04,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:58:04,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:04,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:58:04,757 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:58:04,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:04" (1/1) ... [2018-09-10 11:58:04,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b82260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:04, skipping insertion in model container [2018-09-10 11:58:04,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:04" (1/1) ... [2018-09-10 11:58:05,177 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:58:06,328 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:06,350 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:58:07,178 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:07,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07 WrapperNode [2018-09-10 11:58:07,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:07,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:07,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:58:07,485 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:58:07,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:07,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:07,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:07,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:58:07,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:58:07,779 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:58:08,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... [2018-09-10 11:58:08,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:58:08,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:58:08,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:58:08,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:58:08,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:58:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:58:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:58:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:58:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:58:09,034 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 [2018-09-10 11:58:09,035 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 [2018-09-10 11:58:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:58:09,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:58:09,035 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 [2018-09-10 11:58:09,035 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 [2018-09-10 11:58:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:58:09,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:58:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:58:09,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:58:22,689 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:58:22,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:58:22 BoogieIcfgContainer [2018-09-10 11:58:22,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:58:22,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:58:22,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:58:22,694 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:58:22,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:58:04" (1/3) ... [2018-09-10 11:58:22,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65041e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:58:22, skipping insertion in model container [2018-09-10 11:58:22,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:07" (2/3) ... [2018-09-10 11:58:22,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65041e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:58:22, skipping insertion in model container [2018-09-10 11:58:22,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:58:22" (3/3) ... [2018-09-10 11:58:22,697 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47_true-unreach-call.c [2018-09-10 11:58:22,707 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:58:22,716 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:58:22,777 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:58:22,778 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:58:22,778 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:58:22,778 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:58:22,778 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:58:22,779 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:58:22,779 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:58:22,779 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:58:22,779 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:58:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:58:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-10 11:58:22,832 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:22,833 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:22,834 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1466979756, now seen corresponding path program 1 times [2018-09-10 11:58:22,842 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:22,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:22,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:22,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:22,893 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:23,382 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:58:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:23,489 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:23,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:58:23,489 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:23,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:58:23,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:58:23,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:58:23,513 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:58:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:35,734 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-09-10 11:58:35,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:58:35,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-09-10 11:58:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:35,770 INFO L225 Difference]: With dead ends: 3104 [2018-09-10 11:58:35,771 INFO L226 Difference]: Without dead ends: 1982 [2018-09-10 11:58:35,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:58:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-09-10 11:58:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-09-10 11:58:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-09-10 11:58:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-09-10 11:58:35,971 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 50 [2018-09-10 11:58:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:35,972 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-09-10 11:58:35,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:58:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-09-10 11:58:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-10 11:58:35,985 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:35,989 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:35,990 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2116279952, now seen corresponding path program 1 times [2018-09-10 11:58:35,990 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:35,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:35,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:35,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:35,992 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:36,498 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:36,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:58:36,498 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:36,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:58:36,503 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:58:36,503 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:58:36,504 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 6 states. [2018-09-10 11:58:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:53,850 INFO L93 Difference]: Finished difference Result 7217 states and 13326 transitions. [2018-09-10 11:58:53,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:53,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-09-10 11:58:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:53,881 INFO L225 Difference]: With dead ends: 7217 [2018-09-10 11:58:53,881 INFO L226 Difference]: Without dead ends: 5258 [2018-09-10 11:58:53,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2018-09-10 11:58:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5228. [2018-09-10 11:58:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5228 states. [2018-09-10 11:58:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8304 transitions. [2018-09-10 11:58:54,037 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8304 transitions. Word has length 120 [2018-09-10 11:58:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:54,037 INFO L480 AbstractCegarLoop]: Abstraction has 5228 states and 8304 transitions. [2018-09-10 11:58:54,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:58:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8304 transitions. [2018-09-10 11:58:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-10 11:58:54,043 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:54,044 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:54,044 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1054701768, now seen corresponding path program 1 times [2018-09-10 11:58:54,045 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:54,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:54,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:54,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:54,046 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:54,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:54,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:58:54,741 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:54,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:58:54,742 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:58:54,742 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:58:54,742 INFO L87 Difference]: Start difference. First operand 5228 states and 8304 transitions. Second operand 7 states. [2018-09-10 11:59:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:17,372 INFO L93 Difference]: Finished difference Result 18314 states and 31314 transitions. [2018-09-10 11:59:17,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:59:17,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2018-09-10 11:59:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:17,450 INFO L225 Difference]: With dead ends: 18314 [2018-09-10 11:59:17,450 INFO L226 Difference]: Without dead ends: 13092 [2018-09-10 11:59:17,479 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:59:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2018-09-10 11:59:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 12956. [2018-09-10 11:59:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12956 states. [2018-09-10 11:59:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 19065 transitions. [2018-09-10 11:59:17,871 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 19065 transitions. Word has length 133 [2018-09-10 11:59:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:17,875 INFO L480 AbstractCegarLoop]: Abstraction has 12956 states and 19065 transitions. [2018-09-10 11:59:17,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:59:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 19065 transitions. [2018-09-10 11:59:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-10 11:59:17,886 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:17,888 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:17,888 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash 461643745, now seen corresponding path program 1 times [2018-09-10 11:59:17,889 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:17,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:17,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:17,890 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:18,243 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:18,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:18,556 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:18,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:18,568 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:18,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:18,926 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-09-10 11:59:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:59:18,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:59:19,104 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:59:19,104 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-10 11:59:19,105 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:19,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:59:19,105 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:59:19,106 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:19,106 INFO L87 Difference]: Start difference. First operand 12956 states and 19065 transitions. Second operand 3 states. [2018-09-10 11:59:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:29,894 INFO L93 Difference]: Finished difference Result 37441 states and 58377 transitions. [2018-09-10 11:59:29,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:59:29,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-09-10 11:59:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:30,044 INFO L225 Difference]: With dead ends: 37441 [2018-09-10 11:59:30,044 INFO L226 Difference]: Without dead ends: 24491 [2018-09-10 11:59:30,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24491 states. [2018-09-10 11:59:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24491 to 24440. [2018-09-10 11:59:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24440 states. [2018-09-10 11:59:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 36490 transitions. [2018-09-10 11:59:30,787 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 36490 transitions. Word has length 210 [2018-09-10 11:59:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:30,788 INFO L480 AbstractCegarLoop]: Abstraction has 24440 states and 36490 transitions. [2018-09-10 11:59:30,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:59:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 36490 transitions. [2018-09-10 11:59:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-10 11:59:30,807 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:30,807 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:30,808 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:30,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1502807339, now seen corresponding path program 1 times [2018-09-10 11:59:30,808 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:30,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:30,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:30,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:30,809 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:31,123 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:31,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:31,472 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-10 11:59:31,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:31,487 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:31,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:59:31,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:32,428 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:59:32,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:59:32,428 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:32,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:32,430 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:32,430 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:59:32,430 INFO L87 Difference]: Start difference. First operand 24440 states and 36490 transitions. Second operand 5 states. [2018-09-10 11:59:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:54,994 INFO L93 Difference]: Finished difference Result 65251 states and 106666 transitions. [2018-09-10 11:59:54,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:54,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-09-10 11:59:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:55,196 INFO L225 Difference]: With dead ends: 65251 [2018-09-10 11:59:55,197 INFO L226 Difference]: Without dead ends: 40817 [2018-09-10 11:59:55,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:59:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40817 states. [2018-09-10 11:59:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40817 to 40337. [2018-09-10 11:59:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40337 states. [2018-09-10 11:59:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40337 states to 40337 states and 63211 transitions. [2018-09-10 11:59:56,582 INFO L78 Accepts]: Start accepts. Automaton has 40337 states and 63211 transitions. Word has length 230 [2018-09-10 11:59:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:56,582 INFO L480 AbstractCegarLoop]: Abstraction has 40337 states and 63211 transitions. [2018-09-10 11:59:56,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 40337 states and 63211 transitions. [2018-09-10 11:59:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-10 11:59:56,627 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:56,627 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:56,627 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:56,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1280804818, now seen corresponding path program 1 times [2018-09-10 11:59:56,628 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:56,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:56,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:56,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:56,629 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:57,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:57,004 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:57,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:57,019 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:57,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:59:57,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:58,270 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:59:58,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:59:58,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:58,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:58,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:58,272 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:58,272 INFO L87 Difference]: Start difference. First operand 40337 states and 63211 transitions. Second operand 5 states. [2018-09-10 12:00:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:15,198 INFO L93 Difference]: Finished difference Result 99331 states and 172568 transitions. [2018-09-10 12:00:15,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:15,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2018-09-10 12:00:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:15,487 INFO L225 Difference]: With dead ends: 99331 [2018-09-10 12:00:15,488 INFO L226 Difference]: Without dead ends: 59000 [2018-09-10 12:00:15,619 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:00:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59000 states. [2018-09-10 12:00:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59000 to 58583. [2018-09-10 12:00:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58583 states. [2018-09-10 12:00:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58583 states to 58583 states and 97947 transitions. [2018-09-10 12:00:17,110 INFO L78 Accepts]: Start accepts. Automaton has 58583 states and 97947 transitions. Word has length 259 [2018-09-10 12:00:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:17,113 INFO L480 AbstractCegarLoop]: Abstraction has 58583 states and 97947 transitions. [2018-09-10 12:00:17,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 58583 states and 97947 transitions. [2018-09-10 12:00:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-10 12:00:17,142 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:17,142 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:00:17,142 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:17,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2032230598, now seen corresponding path program 1 times [2018-09-10 12:00:17,143 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:17,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:17,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:17,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:17,145 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:18,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:18,411 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:18,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:18,425 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:18,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-10 12:00:18,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 12:00:18,806 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:00:18,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-10 12:00:18,806 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:18,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:00:18,807 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:00:18,807 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:18,808 INFO L87 Difference]: Start difference. First operand 58583 states and 97947 transitions. Second operand 3 states. [2018-09-10 12:00:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:27,714 INFO L93 Difference]: Finished difference Result 144254 states and 254825 transitions. [2018-09-10 12:00:27,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:00:27,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-09-10 12:00:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:28,125 INFO L225 Difference]: With dead ends: 144254 [2018-09-10 12:00:28,125 INFO L226 Difference]: Without dead ends: 85677 [2018-09-10 12:00:28,920 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85677 states. [2018-09-10 12:00:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85677 to 85634. [2018-09-10 12:00:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85634 states. [2018-09-10 12:00:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85634 states to 85634 states and 138424 transitions. [2018-09-10 12:00:30,580 INFO L78 Accepts]: Start accepts. Automaton has 85634 states and 138424 transitions. Word has length 274 [2018-09-10 12:00:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:30,581 INFO L480 AbstractCegarLoop]: Abstraction has 85634 states and 138424 transitions. [2018-09-10 12:00:30,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:00:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 85634 states and 138424 transitions. [2018-09-10 12:00:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-09-10 12:00:30,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:30,660 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:30,660 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash 400982316, now seen corresponding path program 1 times [2018-09-10 12:00:30,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:30,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:30,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:30,978 WARN L175 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 184 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:00:31,062 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:31,063 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:00:31,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:31,072 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:31,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-10 12:00:31,361 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-10 12:00:32,164 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:00:32,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-10 12:00:32,164 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:32,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:00:32,165 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:00:32,165 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:32,166 INFO L87 Difference]: Start difference. First operand 85634 states and 138424 transitions. Second operand 3 states. [2018-09-10 12:00:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:38,371 INFO L93 Difference]: Finished difference Result 164760 states and 268287 transitions. [2018-09-10 12:00:38,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:00:38,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 376 [2018-09-10 12:00:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:38,690 INFO L225 Difference]: With dead ends: 164760 [2018-09-10 12:00:38,691 INFO L226 Difference]: Without dead ends: 85573 [2018-09-10 12:00:38,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 752 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:38,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85573 states. [2018-09-10 12:00:40,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85573 to 85569. [2018-09-10 12:00:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85569 states. [2018-09-10 12:00:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85569 states to 85569 states and 137889 transitions. [2018-09-10 12:00:41,663 INFO L78 Accepts]: Start accepts. Automaton has 85569 states and 137889 transitions. Word has length 376 [2018-09-10 12:00:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:41,664 INFO L480 AbstractCegarLoop]: Abstraction has 85569 states and 137889 transitions. [2018-09-10 12:00:41,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:00:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 85569 states and 137889 transitions. [2018-09-10 12:00:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-10 12:00:41,717 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:41,717 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:41,718 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:41,718 INFO L82 PathProgramCache]: Analyzing trace with hash -866747744, now seen corresponding path program 1 times [2018-09-10 12:00:41,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:41,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:41,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:41,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:41,720 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:42,064 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 184 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:00:42,599 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:42,599 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:42,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:42,614 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:42,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 12:00:42,873 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 205 proven. 72 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 12:00:43,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:43,072 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:00:43,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:43,089 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:43,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 12:00:43,651 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 137 proven. 179 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 12:00:44,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:00:44,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:00:44,115 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:00:44,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:00:44,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:00:44,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:00:44,117 INFO L87 Difference]: Start difference. First operand 85569 states and 137889 transitions. Second operand 9 states. [2018-09-10 12:01:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:00,651 INFO L93 Difference]: Finished difference Result 218402 states and 399313 transitions. [2018-09-10 12:01:00,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 12:01:00,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 390 [2018-09-10 12:01:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:01,148 INFO L225 Difference]: With dead ends: 218402 [2018-09-10 12:01:01,148 INFO L226 Difference]: Without dead ends: 133643 [2018-09-10 12:01:01,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1559 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:01:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133643 states. [2018-09-10 12:01:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133643 to 133144. [2018-09-10 12:01:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133144 states. [2018-09-10 12:01:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133144 states to 133144 states and 199592 transitions. [2018-09-10 12:01:05,196 INFO L78 Accepts]: Start accepts. Automaton has 133144 states and 199592 transitions. Word has length 390 [2018-09-10 12:01:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:05,196 INFO L480 AbstractCegarLoop]: Abstraction has 133144 states and 199592 transitions. [2018-09-10 12:01:05,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:01:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 133144 states and 199592 transitions. [2018-09-10 12:01:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-09-10 12:01:05,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:05,266 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:05,266 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:05,267 INFO L82 PathProgramCache]: Analyzing trace with hash 445763463, now seen corresponding path program 1 times [2018-09-10 12:01:05,267 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:05,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:05,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:05,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:05,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:01:05,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:05,717 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:01:05,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:05,730 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:05,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:01:06,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:01:06,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:06,301 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:01:06,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:06,318 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:07,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:01:07,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:01:07,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:01:07,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:01:07,868 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:01:07,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:01:07,869 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:01:07,869 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:07,870 INFO L87 Difference]: Start difference. First operand 133144 states and 199592 transitions. Second operand 9 states. [2018-09-10 12:01:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:34,319 INFO L93 Difference]: Finished difference Result 363820 states and 701105 transitions. [2018-09-10 12:01:34,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 12:01:34,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 431 [2018-09-10 12:01:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:35,914 INFO L225 Difference]: With dead ends: 363820 [2018-09-10 12:01:35,915 INFO L226 Difference]: Without dead ends: 231486 [2018-09-10 12:01:36,467 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1720 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:01:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231486 states. [2018-09-10 12:01:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231486 to 230764. [2018-09-10 12:01:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230764 states. [2018-09-10 12:01:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230764 states to 230764 states and 396785 transitions. [2018-09-10 12:01:44,831 INFO L78 Accepts]: Start accepts. Automaton has 230764 states and 396785 transitions. Word has length 431 [2018-09-10 12:01:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:44,831 INFO L480 AbstractCegarLoop]: Abstraction has 230764 states and 396785 transitions. [2018-09-10 12:01:44,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:01:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 230764 states and 396785 transitions. [2018-09-10 12:01:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-09-10 12:01:45,243 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:45,244 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:01:45,244 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2105302635, now seen corresponding path program 1 times [2018-09-10 12:01:45,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:45,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:45,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:45,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:45,246 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:45,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:45,777 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:45,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:45,785 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:45,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:47,712 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:48,050 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:01:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:48,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:48,563 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:01:48,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:48,579 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:49,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:49,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:49,925 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:01:49,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:01:49,926 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:01:49,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:01:49,927 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:01:49,927 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:01:49,927 INFO L87 Difference]: Start difference. First operand 230764 states and 396785 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 12:01:50,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:01:50,053 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:01:50,058 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:01:50,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:01:50 BoogieIcfgContainer [2018-09-10 12:01:50,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:01:50,060 INFO L168 Benchmark]: Toolchain (without parser) took 225315.72 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,061 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. [2018-09-10 12:01:50,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2733.54 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: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,063 INFO L168 Benchmark]: Boogie Preprocessor took 1179.24 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,064 INFO L168 Benchmark]: RCFGBuilder took 13731.79 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 69.7 MB). Peak memory consumption was 753.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,065 INFO L168 Benchmark]: TraceAbstraction took 207368.42 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -321.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:01:50,070 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 2733.54 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: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1179.24 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13731.79 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 69.7 MB). Peak memory consumption was 753.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207368.42 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -321.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (230764states) and FLOYD_HOARE automaton (currently 4 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (23 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 166.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6687 SDtfs, 33457 SDslu, 4839 SDs, 0 SdLazy, 57148 SolverSat, 14395 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 131.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8111 GetRequests, 7983 SyntacticMatches, 30 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230764occurred 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: 20.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2399 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 6979 NumberOfCodeBlocks, 6979 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10947 ConstructedInterpolants, 0 QuantifiedInterpolants, 11432666 SizeOfPredicates, 13 NumberOfNonLiveVariables, 6706 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 7416/8469 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-01-50-084.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-01-50-084.csv Completed graceful shutdown