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_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:56:22,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:56:22,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:56:22,611 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:56:22,611 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:56:22,612 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:56:22,613 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:56:22,615 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:56:22,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:56:22,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:56:22,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:56:22,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:56:22,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:56:22,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:56:22,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:56:22,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:56:22,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:56:22,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:56:22,627 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:56:22,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:56:22,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:56:22,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:56:22,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:56:22,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:56:22,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:56:22,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:56:22,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:56:22,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:56:22,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:56:22,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:56:22,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:56:22,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:56:22,640 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:56:22,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:56:22,641 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:56:22,644 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:56:22,644 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 11:56:22,668 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:56:22,668 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:56:22,669 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:56:22,669 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:56:22,670 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:56:22,670 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:56:22,671 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:56:22,671 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:56:22,671 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:56:22,671 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:56:22,671 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:56:22,672 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:56:22,672 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:56:22,673 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:56:22,673 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:56:22,673 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:56:22,673 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:56:22,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:56:22,674 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:56:22,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:56:22,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:56:22,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:56:22,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:56:22,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:56:22,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:56:22,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:56:22,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:56:22,677 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:56:22,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:56:22,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:56:22,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:56:22,678 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:56:22,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:56:22,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:56:22,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:56:22,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:56:22,751 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:56:22,752 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:56:22,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-07-24 11:56:23,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaddf0f4f/bde206898d234e6ea704c13db71a3ec7/FLAG0df9c9022 [2018-07-24 11:56:23,608 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:56:23,609 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-07-24 11:56:23,653 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaddf0f4f/bde206898d234e6ea704c13db71a3ec7/FLAG0df9c9022 [2018-07-24 11:56:23,669 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaddf0f4f/bde206898d234e6ea704c13db71a3ec7 [2018-07-24 11:56:23,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:56:23,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:56:23,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:56:23,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:56:23,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:56:23,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:56:23" (1/1) ... [2018-07-24 11:56:23,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4032e5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:23, skipping insertion in model container [2018-07-24 11:56:23,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:56:23" (1/1) ... [2018-07-24 11:56:24,077 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:56:25,203 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:56:25,221 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:56:26,333 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:56:26,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26 WrapperNode [2018-07-24 11:56:26,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:56:26,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:56:26,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:56:26,760 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:56:26,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:26,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:27,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:56:27,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:56:27,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:56:27,072 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:56:27,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:27,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:27,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:27,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:28,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:28,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:28,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (1/1) ... [2018-07-24 11:56:28,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:56:28,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:56:28,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:56:28,261 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:56:28,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (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 11:56:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:56:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:56:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:56:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:56:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:56:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:56:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:56:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:56:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:56:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:56:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:56:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:56:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:56:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:56:43,737 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:56:43,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:43 BoogieIcfgContainer [2018-07-24 11:56:43,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:56:43,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:56:43,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:56:43,743 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:56:43,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:56:23" (1/3) ... [2018-07-24 11:56:43,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc91377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:43, skipping insertion in model container [2018-07-24 11:56:43,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:56:26" (2/3) ... [2018-07-24 11:56:43,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc91377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:43, skipping insertion in model container [2018-07-24 11:56:43,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:43" (3/3) ... [2018-07-24 11:56:43,746 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24_false-unreach-call.c [2018-07-24 11:56:43,756 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:56:43,767 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:56:43,832 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:56:43,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:56:43,833 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:56:43,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:56:43,834 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:56:43,834 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:56:43,834 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:56:43,834 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:56:43,834 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:56:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 11:56:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-24 11:56:43,887 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:43,889 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] [2018-07-24 11:56:43,889 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:43,894 INFO L82 PathProgramCache]: Analyzing trace with hash -33847492, now seen corresponding path program 1 times [2018-07-24 11:56:43,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:43,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:43,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:43,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:43,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:44,390 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 11:56:44,393 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:44,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:56:44,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:44,399 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:56:44,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:56:44,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:44,416 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 11:56:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:58,980 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-07-24 11:56:58,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:56:58,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-07-24 11:56:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:59,041 INFO L225 Difference]: With dead ends: 3968 [2018-07-24 11:56:59,041 INFO L226 Difference]: Without dead ends: 2842 [2018-07-24 11:56:59,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-07-24 11:56:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-07-24 11:56:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-07-24 11:56:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-07-24 11:56:59,246 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 36 [2018-07-24 11:56:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:59,248 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-07-24 11:56:59,248 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:56:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-07-24 11:56:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-24 11:56:59,258 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:59,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:59,261 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash -26204168, now seen corresponding path program 1 times [2018-07-24 11:56:59,262 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:59,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:59,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:59,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:59,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:59,599 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:59,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:56:59,600 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:59,601 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:59,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:59,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:56:59,602 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-07-24 11:57:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:12,543 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-07-24 11:57:12,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:57:12,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-07-24 11:57:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:12,576 INFO L225 Difference]: With dead ends: 5673 [2018-07-24 11:57:12,577 INFO L226 Difference]: Without dead ends: 3698 [2018-07-24 11:57:12,584 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-07-24 11:57:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-07-24 11:57:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-07-24 11:57:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-07-24 11:57:12,706 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 106 [2018-07-24 11:57:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:12,707 INFO L471 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-07-24 11:57:12,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-07-24 11:57:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-24 11:57:12,711 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:12,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:12,711 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:12,716 INFO L82 PathProgramCache]: Analyzing trace with hash -973155180, now seen corresponding path program 1 times [2018-07-24 11:57:12,716 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:12,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:12,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:12,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:12,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:12,963 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:12,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:57:12,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:12,964 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:57:12,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:57:12,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:57:12,965 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-07-24 11:57:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:33,043 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-07-24 11:57:33,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:57:33,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-07-24 11:57:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:33,084 INFO L225 Difference]: With dead ends: 10963 [2018-07-24 11:57:33,085 INFO L226 Difference]: Without dead ends: 7282 [2018-07-24 11:57:33,099 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-07-24 11:57:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-07-24 11:57:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-07-24 11:57:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-07-24 11:57:33,276 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 108 [2018-07-24 11:57:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:33,277 INFO L471 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-07-24 11:57:33,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-07-24 11:57:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-24 11:57:33,281 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:33,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:33,282 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1289118692, now seen corresponding path program 1 times [2018-07-24 11:57:33,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:33,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:33,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:33,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:33,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:33,441 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:33,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:57:33,441 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:33,442 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:57:33,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:57:33,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:57:33,442 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-07-24 11:57:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:40,571 INFO L93 Difference]: Finished difference Result 21003 states and 32063 transitions. [2018-07-24 11:57:40,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:57:40,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2018-07-24 11:57:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:40,648 INFO L225 Difference]: With dead ends: 21003 [2018-07-24 11:57:40,648 INFO L226 Difference]: Without dead ends: 13834 [2018-07-24 11:57:40,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:57:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2018-07-24 11:57:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 13825. [2018-07-24 11:57:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2018-07-24 11:57:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19394 transitions. [2018-07-24 11:57:41,018 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19394 transitions. Word has length 152 [2018-07-24 11:57:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:41,019 INFO L471 AbstractCegarLoop]: Abstraction has 13825 states and 19394 transitions. [2018-07-24 11:57:41,019 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:57:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19394 transitions. [2018-07-24 11:57:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-24 11:57:41,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:41,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:41,026 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash -665078284, now seen corresponding path program 1 times [2018-07-24 11:57:41,027 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:41,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:41,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:41,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:41,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:41,264 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:41,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:57:41,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:41,265 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:57:41,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:57:41,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:57:41,265 INFO L87 Difference]: Start difference. First operand 13825 states and 19394 transitions. Second operand 4 states. [2018-07-24 11:57:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:51,632 INFO L93 Difference]: Finished difference Result 31681 states and 44253 transitions. [2018-07-24 11:57:51,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:57:51,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-07-24 11:57:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:51,690 INFO L225 Difference]: With dead ends: 31681 [2018-07-24 11:57:51,691 INFO L226 Difference]: Without dead ends: 17862 [2018-07-24 11:57:51,737 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:57:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17862 states. [2018-07-24 11:57:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17862 to 17861. [2018-07-24 11:57:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17861 states. [2018-07-24 11:57:52,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17861 states to 17861 states and 22138 transitions. [2018-07-24 11:57:52,049 INFO L78 Accepts]: Start accepts. Automaton has 17861 states and 22138 transitions. Word has length 157 [2018-07-24 11:57:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:52,050 INFO L471 AbstractCegarLoop]: Abstraction has 17861 states and 22138 transitions. [2018-07-24 11:57:52,050 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:57:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 17861 states and 22138 transitions. [2018-07-24 11:57:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-24 11:57:52,056 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:52,057 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:57:52,057 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1419811154, now seen corresponding path program 1 times [2018-07-24 11:57:52,057 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:52,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:52,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:52,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:52,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:52,357 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:57:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:52,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:52,652 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 11:57:52,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:52,668 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:52,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 11:57:53,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:57:53,290 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:57:53,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-07-24 11:57:53,290 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:53,291 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:57:53,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:57:53,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:53,292 INFO L87 Difference]: Start difference. First operand 17861 states and 22138 transitions. Second operand 3 states. [2018-07-24 11:58:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:07,385 INFO L93 Difference]: Finished difference Result 43070 states and 53960 transitions. [2018-07-24 11:58:07,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:58:07,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-07-24 11:58:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:07,498 INFO L225 Difference]: With dead ends: 43070 [2018-07-24 11:58:07,499 INFO L226 Difference]: Without dead ends: 25215 [2018-07-24 11:58:07,531 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:58:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25215 states. [2018-07-24 11:58:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25215 to 25215. [2018-07-24 11:58:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25215 states. [2018-07-24 11:58:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25215 states to 25215 states and 30414 transitions. [2018-07-24 11:58:08,074 INFO L78 Accepts]: Start accepts. Automaton has 25215 states and 30414 transitions. Word has length 227 [2018-07-24 11:58:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:08,075 INFO L471 AbstractCegarLoop]: Abstraction has 25215 states and 30414 transitions. [2018-07-24 11:58:08,075 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:58:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 25215 states and 30414 transitions. [2018-07-24 11:58:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-24 11:58:08,082 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:08,083 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:58:08,083 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2006027042, now seen corresponding path program 1 times [2018-07-24 11:58:08,084 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:08,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:08,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:08,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:08,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:08,445 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:58:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:08,877 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:08,877 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 11:58:08,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:08,894 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:09,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:58:09,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:10,331 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:58:10,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:58:10,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:10,332 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:58:10,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:58:10,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:58:10,333 INFO L87 Difference]: Start difference. First operand 25215 states and 30414 transitions. Second operand 5 states. [2018-07-24 11:58:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:29,196 INFO L93 Difference]: Finished difference Result 72574 states and 92484 transitions. [2018-07-24 11:58:29,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:58:29,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2018-07-24 11:58:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:29,376 INFO L225 Difference]: With dead ends: 72574 [2018-07-24 11:58:29,377 INFO L226 Difference]: Without dead ends: 47365 [2018-07-24 11:58:29,432 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:58:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47365 states. [2018-07-24 11:58:30,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47365 to 45459. [2018-07-24 11:58:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45459 states. [2018-07-24 11:58:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45459 states to 45459 states and 56577 transitions. [2018-07-24 11:58:30,541 INFO L78 Accepts]: Start accepts. Automaton has 45459 states and 56577 transitions. Word has length 242 [2018-07-24 11:58:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:30,542 INFO L471 AbstractCegarLoop]: Abstraction has 45459 states and 56577 transitions. [2018-07-24 11:58:30,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:58:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 45459 states and 56577 transitions. [2018-07-24 11:58:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-24 11:58:30,555 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:30,556 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:58:30,556 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 329275324, now seen corresponding path program 1 times [2018-07-24 11:58:30,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:30,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:30,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:30,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:30,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:30,845 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:58:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 11:58:31,284 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:31,285 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:58:31,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:31,299 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:31,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-07-24 11:58:31,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 11:58:32,995 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:58:32,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 11:58:32,995 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:32,996 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:58:32,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:58:32,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:58:32,996 INFO L87 Difference]: Start difference. First operand 45459 states and 56577 transitions. Second operand 5 states. [2018-07-24 11:58:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:49,690 INFO L93 Difference]: Finished difference Result 128430 states and 167634 transitions. [2018-07-24 11:58:49,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:58:49,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2018-07-24 11:58:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:49,992 INFO L225 Difference]: With dead ends: 128430 [2018-07-24 11:58:49,992 INFO L226 Difference]: Without dead ends: 82977 [2018-07-24 11:58:50,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:58:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82977 states. [2018-07-24 11:58:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82977 to 81819. [2018-07-24 11:58:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81819 states. [2018-07-24 11:58:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81819 states to 81819 states and 99507 transitions. [2018-07-24 11:58:51,401 INFO L78 Accepts]: Start accepts. Automaton has 81819 states and 99507 transitions. Word has length 256 [2018-07-24 11:58:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:51,401 INFO L471 AbstractCegarLoop]: Abstraction has 81819 states and 99507 transitions. [2018-07-24 11:58:51,401 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:58:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 81819 states and 99507 transitions. [2018-07-24 11:58:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-24 11:58:51,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:51,421 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:51,421 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:51,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1815323802, now seen corresponding path program 1 times [2018-07-24 11:58:51,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:51,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:51,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:51,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:51,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 169 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:58:52,541 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:52,541 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 11:58:52,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:52,550 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:52,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:58:52,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 169 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:58:53,026 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:53,027 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 11:58:53,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:53,044 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:53,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:58:53,430 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 169 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:58:54,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:58:54,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:58:54,134 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:58:54,135 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:58:54,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:58:54,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:58:54,136 INFO L87 Difference]: Start difference. First operand 81819 states and 99507 transitions. Second operand 9 states. [2018-07-24 11:59:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:59:18,212 INFO L93 Difference]: Finished difference Result 220938 states and 306719 transitions. [2018-07-24 11:59:18,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 11:59:18,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 306 [2018-07-24 11:59:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:59:18,734 INFO L225 Difference]: With dead ends: 220938 [2018-07-24 11:59:18,735 INFO L226 Difference]: Without dead ends: 136461 [2018-07-24 11:59:18,973 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1224 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 11:59:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136461 states. [2018-07-24 11:59:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136461 to 134405. [2018-07-24 11:59:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134405 states. [2018-07-24 11:59:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134405 states to 134405 states and 172402 transitions. [2018-07-24 11:59:21,602 INFO L78 Accepts]: Start accepts. Automaton has 134405 states and 172402 transitions. Word has length 306 [2018-07-24 11:59:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:59:21,603 INFO L471 AbstractCegarLoop]: Abstraction has 134405 states and 172402 transitions. [2018-07-24 11:59:21,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:59:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 134405 states and 172402 transitions. [2018-07-24 11:59:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-24 11:59:21,633 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:21,634 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:59:21,634 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1617786300, now seen corresponding path program 1 times [2018-07-24 11:59:21,634 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:21,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:21,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:21,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-07-24 11:59:21,947 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:59:21,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:59:21,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:59:21,948 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:59:21,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:59:21,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:59:21,948 INFO L87 Difference]: Start difference. First operand 134405 states and 172402 transitions. Second operand 4 states. [2018-07-24 11:59:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:59:36,495 INFO L93 Difference]: Finished difference Result 299369 states and 402453 transitions. [2018-07-24 11:59:36,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:59:36,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2018-07-24 11:59:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:59:36,917 INFO L225 Difference]: With dead ends: 299369 [2018-07-24 11:59:36,917 INFO L226 Difference]: Without dead ends: 161271 [2018-07-24 11:59:37,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:59:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161271 states. [2018-07-24 11:59:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161271 to 161237. [2018-07-24 11:59:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161237 states. [2018-07-24 11:59:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161237 states to 161237 states and 200820 transitions. [2018-07-24 11:59:39,453 INFO L78 Accepts]: Start accepts. Automaton has 161237 states and 200820 transitions. Word has length 317 [2018-07-24 11:59:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:59:39,454 INFO L471 AbstractCegarLoop]: Abstraction has 161237 states and 200820 transitions. [2018-07-24 11:59:39,454 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:59:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 161237 states and 200820 transitions. [2018-07-24 11:59:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-07-24 11:59:40,718 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:40,719 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:40,719 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1681039251, now seen corresponding path program 1 times [2018-07-24 11:59:40,719 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:40,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:40,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:40,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:40,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:59:41,156 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:41,157 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:59:41,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:41,165 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:41,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:59:41,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:59:41,732 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:41,732 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 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 [2018-07-24 11:59:41,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:41,750 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:42,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:59:42,306 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:59:43,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:59:43,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:59:43,483 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:59:43,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:59:43,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:59:43,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:59:43,485 INFO L87 Difference]: Start difference. First operand 161237 states and 200820 transitions. Second operand 9 states. [2018-07-24 12:00:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:10,759 INFO L93 Difference]: Finished difference Result 327211 states and 407855 transitions. [2018-07-24 12:00:10,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 12:00:10,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 441 [2018-07-24 12:00:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:11,273 INFO L225 Difference]: With dead ends: 327211 [2018-07-24 12:00:11,273 INFO L226 Difference]: Without dead ends: 162539 [2018-07-24 12:00:11,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1782 GetRequests, 1762 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:00:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162539 states. Received shutdown request... [2018-07-24 12:00:12,558 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:00:12,563 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:00:12,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:00:12 BoogieIcfgContainer [2018-07-24 12:00:12,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:00:12,567 INFO L168 Benchmark]: Toolchain (without parser) took 228883.94 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 673.9 MB in the end (delta: 730.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 12:00:12,568 INFO L168 Benchmark]: CDTParser took 0.20 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 12:00:12,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3072.71 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: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:00:12,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.06 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. [2018-07-24 12:00:12,570 INFO L168 Benchmark]: Boogie Preprocessor took 1189.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 990.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:00:12,572 INFO L168 Benchmark]: RCFGBuilder took 15477.26 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 96.2 MB). Peak memory consumption was 748.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:00:12,573 INFO L168 Benchmark]: TraceAbstraction took 208824.88 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 646.4 MB). Free memory was 2.2 GB in the beginning and 680.6 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:00:12,586 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3072.71 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: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 312.06 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 1189.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 990.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15477.26 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 96.2 MB). Peak memory consumption was 748.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208824.88 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 646.4 MB). Free memory was 2.2 GB in the beginning and 680.6 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 184.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9027 SDtfs, 33395 SDslu, 6566 SDs, 0 SdLazy, 74904 SolverSat, 14818 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 149.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4537 GetRequests, 4442 SyntacticMatches, 12 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161237occurred 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: 9.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 6143 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 4567 NumberOfCodeBlocks, 4567 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6761 ConstructedInterpolants, 0 QuantifiedInterpolants, 5337037 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3974 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 25 InterpolantComputations, 9 PerfectInterpolantSequences, 5209/5828 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_label24_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-00-12-605.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label24_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-00-12-605.csv Completed graceful shutdown