java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:20:45,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:20:45,535 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:20:45,547 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:20:45,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:20:45,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:20:45,549 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:20:45,551 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:20:45,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:20:45,554 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:20:45,555 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:20:45,555 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:20:45,556 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:20:45,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:20:45,558 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:20:45,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:20:45,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:20:45,562 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:20:45,564 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:20:45,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:20:45,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:20:45,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:20:45,571 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:20:45,571 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:20:45,571 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:20:45,572 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:20:45,573 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:20:45,574 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:20:45,575 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:20:45,576 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:20:45,576 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:20:45,577 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:20:45,578 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:20:45,578 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:20:45,579 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:20:45,580 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:20:45,580 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:20:45,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:20:45,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:20:45,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:20:45,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:20:45,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:20:45,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:20:45,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:20:45,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:20:45,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:20:45,615 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:20:45,615 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:20:45,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:20:45,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:20:45,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:20:45,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:20:45,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:20:45,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:20:45,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:20:45,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:20:45,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:20:45,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:20:45,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:20:45,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:20:45,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:20:45,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:20:45,619 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:20:45,621 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:20:45,621 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:20:45,621 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:20:45,621 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:20:45,622 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:20:45,622 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:20:45,622 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:20:45,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:20:45,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:20:45,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:20:45,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:20:45,697 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:20:45,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-07-24 14:20:46,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d771533f/fea60c4cee574aa082f86ea0af33e62c/FLAG228f001f5 [2018-07-24 14:20:46,533 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:20:46,534 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-07-24 14:20:46,576 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d771533f/fea60c4cee574aa082f86ea0af33e62c/FLAG228f001f5 [2018-07-24 14:20:46,599 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d771533f/fea60c4cee574aa082f86ea0af33e62c [2018-07-24 14:20:46,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:20:46,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:20:46,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:20:46,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:20:46,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:20:46,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:20:46" (1/1) ... [2018-07-24 14:20:46,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3fd0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:46, skipping insertion in model container [2018-07-24 14:20:46,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:20:46" (1/1) ... [2018-07-24 14:20:47,023 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:20:48,198 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:20:48,218 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:20:49,169 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:20:49,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49 WrapperNode [2018-07-24 14:20:49,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:20:49,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:20:49,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:20:49,552 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:20:49,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:49,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:49,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:20:49,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:20:49,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:20:49,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:20:50,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:50,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:50,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:50,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:50,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:51,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:51,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... [2018-07-24 14:20:51,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:20:51,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:20:51,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:20:51,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:20:51,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:20:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:20:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:20:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:20:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:20:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:20:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:20:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:20:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:20:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:20:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:20:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:20:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:20:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:20:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:21:03,680 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:21:03,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:21:03 BoogieIcfgContainer [2018-07-24 14:21:03,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:21:03,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:21:03,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:21:03,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:21:03,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:20:46" (1/3) ... [2018-07-24 14:21:03,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4866fc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:21:03, skipping insertion in model container [2018-07-24 14:21:03,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:20:49" (2/3) ... [2018-07-24 14:21:03,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4866fc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:21:03, skipping insertion in model container [2018-07-24 14:21:03,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:21:03" (3/3) ... [2018-07-24 14:21:03,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37_true-unreach-call.c [2018-07-24 14:21:03,698 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:21:03,707 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:21:03,769 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:21:03,770 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:21:03,770 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:21:03,770 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:21:03,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:21:03,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:21:03,770 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:21:03,771 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:21:03,771 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:21:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:21:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-24 14:21:03,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:03,837 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:21:03,838 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2103003689, now seen corresponding path program 1 times [2018-07-24 14:21:03,846 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:03,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:03,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:03,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:03,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:04,321 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:21:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:04,443 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:04,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:21:04,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:04,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:21:04,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:21:04,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:21:04,471 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:21:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:16,520 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-07-24 14:21:16,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:21:16,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-07-24 14:21:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:16,568 INFO L225 Difference]: With dead ends: 3087 [2018-07-24 14:21:16,568 INFO L226 Difference]: Without dead ends: 1965 [2018-07-24 14:21:16,579 INFO L573 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 [2018-07-24 14:21:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-07-24 14:21:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-07-24 14:21:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-07-24 14:21:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-07-24 14:21:16,740 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 61 [2018-07-24 14:21:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:16,741 INFO L471 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-07-24 14:21:16,742 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:21:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-07-24 14:21:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 14:21:16,754 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:16,755 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:21:16,755 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:16,757 INFO L82 PathProgramCache]: Analyzing trace with hash 701242810, now seen corresponding path program 1 times [2018-07-24 14:21:16,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:16,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:16,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:16,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:16,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:17,176 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:17,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:21:17,177 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:17,180 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:21:17,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:21:17,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:21:17,181 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 5 states. [2018-07-24 14:21:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:45,168 INFO L93 Difference]: Finished difference Result 7492 states and 13755 transitions. [2018-07-24 14:21:45,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:21:45,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-07-24 14:21:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:45,206 INFO L225 Difference]: With dead ends: 7492 [2018-07-24 14:21:45,206 INFO L226 Difference]: Without dead ends: 5539 [2018-07-24 14:21:45,219 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:21:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-07-24 14:21:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5411. [2018-07-24 14:21:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5411 states. [2018-07-24 14:21:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 8851 transitions. [2018-07-24 14:21:45,406 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 8851 transitions. Word has length 138 [2018-07-24 14:21:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:45,407 INFO L471 AbstractCegarLoop]: Abstraction has 5411 states and 8851 transitions. [2018-07-24 14:21:45,407 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:21:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 8851 transitions. [2018-07-24 14:21:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-24 14:21:45,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:45,414 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:21:45,415 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:45,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1809957348, now seen corresponding path program 1 times [2018-07-24 14:21:45,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:45,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:45,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:45,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:45,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:45,673 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:45,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:21:45,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:45,674 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:21:45,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:21:45,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:21:45,675 INFO L87 Difference]: Start difference. First operand 5411 states and 8851 transitions. Second operand 6 states. [2018-07-24 14:21:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:58,011 INFO L93 Difference]: Finished difference Result 14276 states and 24291 transitions. [2018-07-24 14:21:58,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:21:58,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-07-24 14:21:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:58,067 INFO L225 Difference]: With dead ends: 14276 [2018-07-24 14:21:58,068 INFO L226 Difference]: Without dead ends: 8871 [2018-07-24 14:21:58,090 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:21:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8871 states. [2018-07-24 14:21:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8871 to 8784. [2018-07-24 14:21:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8784 states. [2018-07-24 14:21:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 13394 transitions. [2018-07-24 14:21:58,335 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 13394 transitions. Word has length 152 [2018-07-24 14:21:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:58,336 INFO L471 AbstractCegarLoop]: Abstraction has 8784 states and 13394 transitions. [2018-07-24 14:21:58,336 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:21:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 13394 transitions. [2018-07-24 14:21:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-24 14:21:58,341 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:58,342 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:21:58,342 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash 953993824, now seen corresponding path program 1 times [2018-07-24 14:21:58,342 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:58,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:58,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:58,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:58,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:58,703 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:21:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:58,833 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:58,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:21:58,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:58,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:21:58,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:21:58,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:21:58,835 INFO L87 Difference]: Start difference. First operand 8784 states and 13394 transitions. Second operand 6 states. [2018-07-24 14:22:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:13,533 INFO L93 Difference]: Finished difference Result 29374 states and 47084 transitions. [2018-07-24 14:22:13,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:22:13,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-07-24 14:22:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:13,636 INFO L225 Difference]: With dead ends: 29374 [2018-07-24 14:22:13,636 INFO L226 Difference]: Without dead ends: 20596 [2018-07-24 14:22:13,688 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:22:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20596 states. [2018-07-24 14:22:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20596 to 20493. [2018-07-24 14:22:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20493 states. [2018-07-24 14:22:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 29415 transitions. [2018-07-24 14:22:14,213 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 29415 transitions. Word has length 157 [2018-07-24 14:22:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:14,214 INFO L471 AbstractCegarLoop]: Abstraction has 20493 states and 29415 transitions. [2018-07-24 14:22:14,214 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:22:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 29415 transitions. [2018-07-24 14:22:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-24 14:22:14,221 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:14,222 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:14,222 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2102818936, now seen corresponding path program 1 times [2018-07-24 14:22:14,223 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:14,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:14,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:14,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:14,529 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:14,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:22:14,529 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:14,530 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:14,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:14,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:22:14,531 INFO L87 Difference]: Start difference. First operand 20493 states and 29415 transitions. Second operand 5 states. [2018-07-24 14:22:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:43,900 INFO L93 Difference]: Finished difference Result 54255 states and 81605 transitions. [2018-07-24 14:22:43,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:22:43,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-07-24 14:22:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:44,033 INFO L225 Difference]: With dead ends: 54255 [2018-07-24 14:22:44,033 INFO L226 Difference]: Without dead ends: 33768 [2018-07-24 14:22:44,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:22:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33768 states. [2018-07-24 14:22:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33768 to 33625. [2018-07-24 14:22:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33625 states. [2018-07-24 14:22:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33625 states to 33625 states and 50296 transitions. [2018-07-24 14:22:44,855 INFO L78 Accepts]: Start accepts. Automaton has 33625 states and 50296 transitions. Word has length 169 [2018-07-24 14:22:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:44,855 INFO L471 AbstractCegarLoop]: Abstraction has 33625 states and 50296 transitions. [2018-07-24 14:22:44,855 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 33625 states and 50296 transitions. [2018-07-24 14:22:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-24 14:22:44,874 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:44,874 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:22:44,874 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:44,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2062396899, now seen corresponding path program 1 times [2018-07-24 14:22:44,875 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:44,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:44,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:44,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:44,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:22:45,361 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:45,361 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:22:45,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:45,378 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:45,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-07-24 14:22:45,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:22:46,093 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:22:46,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 14:22:46,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:46,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:46,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:46,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:22:46,094 INFO L87 Difference]: Start difference. First operand 33625 states and 50296 transitions. Second operand 5 states. [2018-07-24 14:22:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:59,168 INFO L93 Difference]: Finished difference Result 95986 states and 161861 transitions. [2018-07-24 14:22:59,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:22:59,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-07-24 14:22:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:59,537 INFO L225 Difference]: With dead ends: 95986 [2018-07-24 14:22:59,538 INFO L226 Difference]: Without dead ends: 63175 [2018-07-24 14:22:59,683 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:22:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63175 states. [2018-07-24 14:23:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63175 to 62703. [2018-07-24 14:23:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62703 states. [2018-07-24 14:23:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62703 states to 62703 states and 94222 transitions. [2018-07-24 14:23:01,845 INFO L78 Accepts]: Start accepts. Automaton has 62703 states and 94222 transitions. Word has length 224 [2018-07-24 14:23:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:01,846 INFO L471 AbstractCegarLoop]: Abstraction has 62703 states and 94222 transitions. [2018-07-24 14:23:01,846 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 62703 states and 94222 transitions. [2018-07-24 14:23:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 14:23:01,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:01,861 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:01,861 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:01,862 INFO L82 PathProgramCache]: Analyzing trace with hash 335801557, now seen corresponding path program 1 times [2018-07-24 14:23:01,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:01,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:01,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:01,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:01,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:02,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:02,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:23:02,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:02,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:23:02,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:23:02,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:23:02,159 INFO L87 Difference]: Start difference. First operand 62703 states and 94222 transitions. Second operand 5 states. [2018-07-24 14:23:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:24,080 INFO L93 Difference]: Finished difference Result 163405 states and 245279 transitions. [2018-07-24 14:23:24,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:24,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2018-07-24 14:23:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:24,380 INFO L225 Difference]: With dead ends: 163405 [2018-07-24 14:23:24,380 INFO L226 Difference]: Without dead ends: 100708 [2018-07-24 14:23:24,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:23:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100708 states. [2018-07-24 14:23:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100708 to 98948. [2018-07-24 14:23:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98948 states. [2018-07-24 14:23:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98948 states to 98948 states and 137718 transitions. [2018-07-24 14:23:26,971 INFO L78 Accepts]: Start accepts. Automaton has 98948 states and 137718 transitions. Word has length 232 [2018-07-24 14:23:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:26,972 INFO L471 AbstractCegarLoop]: Abstraction has 98948 states and 137718 transitions. [2018-07-24 14:23:26,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 98948 states and 137718 transitions. [2018-07-24 14:23:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-24 14:23:26,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:26,993 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:26,993 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash 422650839, now seen corresponding path program 1 times [2018-07-24 14:23:26,994 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:26,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:26,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:26,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:26,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:27,609 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:27,610 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:23:27,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:27,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:27,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-07-24 14:23:28,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:28,905 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:23:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 113 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:29,583 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:29,584 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:23:29,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:29,612 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:29,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:29,968 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:30,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:23:30,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 21 [2018-07-24 14:23:30,305 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:23:30,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 14:23:30,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 14:23:30,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:23:30,306 INFO L87 Difference]: Start difference. First operand 98948 states and 137718 transitions. Second operand 11 states. [2018-07-24 14:24:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:26,956 INFO L93 Difference]: Finished difference Result 327418 states and 491146 transitions. [2018-07-24 14:24:26,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-24 14:24:26,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2018-07-24 14:24:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:27,692 INFO L225 Difference]: With dead ends: 327418 [2018-07-24 14:24:27,692 INFO L226 Difference]: Without dead ends: 218151 [2018-07-24 14:24:27,953 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1151 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=971, Invalid=4729, Unknown=0, NotChecked=0, Total=5700 [2018-07-24 14:24:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218151 states. [2018-07-24 14:24:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218151 to 217288. [2018-07-24 14:24:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217288 states. [2018-07-24 14:24:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217288 states to 217288 states and 284107 transitions. [2018-07-24 14:24:32,374 INFO L78 Accepts]: Start accepts. Automaton has 217288 states and 284107 transitions. Word has length 285 [2018-07-24 14:24:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:32,375 INFO L471 AbstractCegarLoop]: Abstraction has 217288 states and 284107 transitions. [2018-07-24 14:24:32,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 14:24:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 217288 states and 284107 transitions. [2018-07-24 14:24:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-24 14:24:32,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:32,398 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:32,398 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:32,399 INFO L82 PathProgramCache]: Analyzing trace with hash 871020555, now seen corresponding path program 1 times [2018-07-24 14:24:32,399 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:32,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:32,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:32,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:34,429 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:24:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:24:34,493 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:34,493 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:34,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:34,502 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:34,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:34,767 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:34,925 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:34,925 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:24:34,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:34,945 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:35,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:24:35,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:24:35,505 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:24:35,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 12 [2018-07-24 14:24:35,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:35,506 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:35,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:35,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:24:35,507 INFO L87 Difference]: Start difference. First operand 217288 states and 284107 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 14:24:42,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:24:42,284 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:24:42,291 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:24:42,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:24:42 BoogieIcfgContainer [2018-07-24 14:24:42,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:24:42,292 INFO L168 Benchmark]: Toolchain (without parser) took 235678.61 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -77.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:24:42,294 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:24:42,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2933.40 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:24:42,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 322.55 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:24:42,296 INFO L168 Benchmark]: Boogie Preprocessor took 1284.45 ms. Allocated memory was 1.5 GB in the beginning and 2.6 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. [2018-07-24 14:24:42,302 INFO L168 Benchmark]: RCFGBuilder took 12521.86 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 73.6 MB). Peak memory consumption was 750.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:24:42,304 INFO L168 Benchmark]: TraceAbstraction took 218608.92 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 507.5 MB). Free memory was 2.3 GB in the beginning and 1.5 GB in the end (delta: 795.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:24:42,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2933.40 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 322.55 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1284.45 ms. Allocated memory was 1.5 GB in the beginning and 2.6 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 12521.86 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 73.6 MB). Peak memory consumption was 750.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218608.92 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 507.5 MB). Free memory was 2.3 GB in the beginning and 1.5 GB in the end (delta: 795.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (217288states) and interpolant automaton (currently 6 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (105524 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 218.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 197.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3599 SDtfs, 44756 SDslu, 5825 SDs, 0 SdLazy, 80648 SolverSat, 17465 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 166.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2894 GetRequests, 2753 SyntacticMatches, 14 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217288occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 3562 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 3076 NumberOfCodeBlocks, 3076 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4427 ConstructedInterpolants, 0 QuantifiedInterpolants, 3483913 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2460 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 2722/2975 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_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-24-42-343.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-24-42-343.csv Completed graceful shutdown