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/Problem15_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:12:05,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:12:05,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:12:05,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:12:05,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:12:05,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:12:05,669 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:12:05,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:12:05,674 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:12:05,675 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:12:05,677 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:12:05,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:12:05,679 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:12:05,680 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:12:05,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:12:05,690 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:12:05,694 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:12:05,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:12:05,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:12:05,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:12:05,706 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:12:05,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:12:05,711 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:12:05,715 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:12:05,716 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:12:05,717 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:12:05,718 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:12:05,719 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:12:05,720 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:12:05,724 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:12:05,725 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:12:05,725 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:12:05,726 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:12:05,726 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:12:05,727 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:12:05,728 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:12:05,728 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 12:12:05,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:12:05,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:12:05,745 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:12:05,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:12:05,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:12:05,746 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:12:05,746 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:12:05,747 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:12:05,747 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:12:05,747 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:12:05,747 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:12:05,748 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:12:05,748 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:12:05,748 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:12:05,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:12:05,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:12:05,749 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:12:05,749 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:12:05,749 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:12:05,750 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:12:05,750 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:12:05,750 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:12:05,750 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:12:05,751 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:12:05,751 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:12:05,751 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:12:05,751 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:12:05,752 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:12:05,752 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:12:05,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:12:05,752 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:12:05,752 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:12:05,753 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:12:05,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:12:05,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:12:05,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:12:05,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:12:05,835 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:12:05,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-07-24 12:12:06,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60267e5f8/2e28b27266344e1ebc491d4be0225cb2/FLAGe18e74055 [2018-07-24 12:12:06,514 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:12:06,514 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-07-24 12:12:06,539 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60267e5f8/2e28b27266344e1ebc491d4be0225cb2/FLAGe18e74055 [2018-07-24 12:12:06,559 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60267e5f8/2e28b27266344e1ebc491d4be0225cb2 [2018-07-24 12:12:06,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:12:06,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:12:06,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:12:06,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:12:06,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:12:06,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:12:06" (1/1) ... [2018-07-24 12:12:06,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec00d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:06, skipping insertion in model container [2018-07-24 12:12:06,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:12:06" (1/1) ... [2018-07-24 12:12:06,865 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:12:07,461 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:12:07,477 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:12:07,804 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:12:07,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07 WrapperNode [2018-07-24 12:12:07,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:12:07,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:12:07,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:12:07,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:12:07,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:12:08,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:12:08,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:12:08,170 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:12:08,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... [2018-07-24 12:12:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:12:08,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:12:08,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:12:08,746 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:12:08,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:12:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:12:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:12:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:12:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:12:08,813 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 12:12:08,813 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 12:12:08,813 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 12:12:08,813 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 12:12:14,647 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:12:14,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:12:14 BoogieIcfgContainer [2018-07-24 12:12:14,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:12:14,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:12:14,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:12:14,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:12:14,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:12:06" (1/3) ... [2018-07-24 12:12:14,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50526f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:12:14, skipping insertion in model container [2018-07-24 12:12:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:12:07" (2/3) ... [2018-07-24 12:12:14,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50526f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:12:14, skipping insertion in model container [2018-07-24 12:12:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:12:14" (3/3) ... [2018-07-24 12:12:14,660 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label39_false-unreach-call.c [2018-07-24 12:12:14,669 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:12:14,678 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:12:14,736 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:12:14,737 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:12:14,737 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:12:14,737 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:12:14,737 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:12:14,737 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:12:14,737 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:12:14,738 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:12:14,738 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:12:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:12:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-24 12:12:14,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:14,785 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:12:14,785 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 12:12:14,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2005541268, now seen corresponding path program 1 times [2018-07-24 12:12:14,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:14,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:14,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:14,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:14,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:15,170 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 12:12:15,176 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:12:15,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:12:15,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:12:15,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:12:15,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:12:15,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:12:15,209 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-07-24 12:12:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:23,157 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-07-24 12:12:23,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:12:23,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-07-24 12:12:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:23,186 INFO L225 Difference]: With dead ends: 1501 [2018-07-24 12:12:23,186 INFO L226 Difference]: Without dead ends: 1057 [2018-07-24 12:12:23,196 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 12:12:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-07-24 12:12:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-07-24 12:12:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 12:12:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-07-24 12:12:23,298 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 18 [2018-07-24 12:12:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:23,298 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-07-24 12:12:23,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:12:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-07-24 12:12:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-24 12:12:23,303 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:23,303 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:12:23,304 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 12:12:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash 159714207, now seen corresponding path program 1 times [2018-07-24 12:12:23,304 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:23,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:23,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:23,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:23,655 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:12:23,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:12:23,655 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:12:23,657 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:12:23,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:12:23,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:12:23,658 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 5 states. [2018-07-24 12:12:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:42,486 INFO L93 Difference]: Finished difference Result 2390 states and 3583 transitions. [2018-07-24 12:12:42,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:12:42,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-07-24 12:12:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:42,499 INFO L225 Difference]: With dead ends: 2390 [2018-07-24 12:12:42,499 INFO L226 Difference]: Without dead ends: 1652 [2018-07-24 12:12:42,504 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:12:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2018-07-24 12:12:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1644. [2018-07-24 12:12:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2018-07-24 12:12:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2399 transitions. [2018-07-24 12:12:42,572 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2399 transitions. Word has length 88 [2018-07-24 12:12:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:42,573 INFO L471 AbstractCegarLoop]: Abstraction has 1644 states and 2399 transitions. [2018-07-24 12:12:42,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:12:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2399 transitions. [2018-07-24 12:12:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-24 12:12:42,576 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:42,577 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:12:42,577 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 12:12:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash 25067390, now seen corresponding path program 1 times [2018-07-24 12:12:42,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:42,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:42,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:42,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:43,121 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:12:43,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:12:43,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:12:43,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:12:43,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:12:43,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:12:43,123 INFO L87 Difference]: Start difference. First operand 1644 states and 2399 transitions. Second operand 6 states. [2018-07-24 12:12:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:52,825 INFO L93 Difference]: Finished difference Result 4245 states and 6731 transitions. [2018-07-24 12:12:52,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:12:52,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-07-24 12:12:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:52,848 INFO L225 Difference]: With dead ends: 4245 [2018-07-24 12:12:52,848 INFO L226 Difference]: Without dead ends: 2916 [2018-07-24 12:12:52,856 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 12:12:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2018-07-24 12:12:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2869. [2018-07-24 12:12:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2018-07-24 12:12:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4001 transitions. [2018-07-24 12:12:52,953 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4001 transitions. Word has length 93 [2018-07-24 12:12:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:52,954 INFO L471 AbstractCegarLoop]: Abstraction has 2869 states and 4001 transitions. [2018-07-24 12:12:52,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:12:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4001 transitions. [2018-07-24 12:12:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-24 12:12:52,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:52,960 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:12:52,960 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 12:12:52,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1105259314, now seen corresponding path program 1 times [2018-07-24 12:12:52,960 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:52,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:52,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:52,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:52,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:53,130 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:12:53,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:12:53,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:12:53,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:12:53,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:12:53,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:12:53,132 INFO L87 Difference]: Start difference. First operand 2869 states and 4001 transitions. Second operand 4 states. [2018-07-24 12:12:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:58,326 INFO L93 Difference]: Finished difference Result 7273 states and 10688 transitions. [2018-07-24 12:12:58,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:12:58,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-07-24 12:12:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:58,350 INFO L225 Difference]: With dead ends: 7273 [2018-07-24 12:12:58,351 INFO L226 Difference]: Without dead ends: 4719 [2018-07-24 12:12:58,363 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:12:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2018-07-24 12:12:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4716. [2018-07-24 12:12:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4716 states. [2018-07-24 12:12:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 6411 transitions. [2018-07-24 12:12:58,490 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 6411 transitions. Word has length 99 [2018-07-24 12:12:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:58,491 INFO L471 AbstractCegarLoop]: Abstraction has 4716 states and 6411 transitions. [2018-07-24 12:12:58,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:12:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 6411 transitions. [2018-07-24 12:12:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-24 12:12:58,494 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:58,494 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:12:58,494 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 12:12:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash -879073699, now seen corresponding path program 1 times [2018-07-24 12:12:58,495 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:58,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:58,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:58,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:58,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:59,236 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:59,236 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 12:12:59,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:59,260 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:59,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:03,733 WARN L169 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 37 [2018-07-24 12:13:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:05,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:06,200 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:13:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:06,421 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:13:06,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-07-24 12:13:06,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:06,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:13:06,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:13:06,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-24 12:13:06,422 INFO L87 Difference]: Start difference. First operand 4716 states and 6411 transitions. Second operand 3 states. [2018-07-24 12:13:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:11,782 INFO L93 Difference]: Finished difference Result 11792 states and 16808 transitions. [2018-07-24 12:13:11,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:13:11,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-07-24 12:13:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:11,823 INFO L225 Difference]: With dead ends: 11792 [2018-07-24 12:13:11,823 INFO L226 Difference]: Without dead ends: 7391 [2018-07-24 12:13:11,851 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-24 12:13:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2018-07-24 12:13:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7379. [2018-07-24 12:13:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7379 states. [2018-07-24 12:13:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 9911 transitions. [2018-07-24 12:13:12,024 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 9911 transitions. Word has length 114 [2018-07-24 12:13:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:12,025 INFO L471 AbstractCegarLoop]: Abstraction has 7379 states and 9911 transitions. [2018-07-24 12:13:12,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:13:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 9911 transitions. [2018-07-24 12:13:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 12:13:12,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:12,033 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:13:12,033 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 12:13:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 770697368, now seen corresponding path program 1 times [2018-07-24 12:13:12,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:12,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:12,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:12,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:12,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:12,346 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 12:13:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:13:12,431 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:12,431 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 12:13:12,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:12,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:12,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:12,937 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:13:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 12:13:12,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:13,503 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 12:13:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:13:14,070 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:13:14,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:13:14,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:14,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:13:14,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:13:14,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:13:14,072 INFO L87 Difference]: Start difference. First operand 7379 states and 9911 transitions. Second operand 5 states. [2018-07-24 12:13:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:24,625 INFO L93 Difference]: Finished difference Result 16632 states and 22665 transitions. [2018-07-24 12:13:24,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:13:24,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2018-07-24 12:13:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:24,687 INFO L225 Difference]: With dead ends: 16632 [2018-07-24 12:13:24,687 INFO L226 Difference]: Without dead ends: 9567 [2018-07-24 12:13:24,725 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:13:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9567 states. [2018-07-24 12:13:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9567 to 9478. [2018-07-24 12:13:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9478 states. [2018-07-24 12:13:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 12705 transitions. [2018-07-24 12:13:24,940 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 12705 transitions. Word has length 178 [2018-07-24 12:13:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:24,941 INFO L471 AbstractCegarLoop]: Abstraction has 9478 states and 12705 transitions. [2018-07-24 12:13:24,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:13:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 12705 transitions. [2018-07-24 12:13:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-24 12:13:24,952 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:24,952 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:13:24,952 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 12:13:24,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1558915597, now seen corresponding path program 1 times [2018-07-24 12:13:24,952 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:24,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:24,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:24,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:24,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:13:25,501 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:25,501 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 12:13:25,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:25,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:25,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:13:25,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:13:26,499 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:13:26,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 12:13:26,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:26,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:13:26,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:13:26,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:13:26,501 INFO L87 Difference]: Start difference. First operand 9478 states and 12705 transitions. Second operand 5 states. [2018-07-24 12:13:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:30,935 INFO L93 Difference]: Finished difference Result 21453 states and 29891 transitions. [2018-07-24 12:13:30,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:13:30,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2018-07-24 12:13:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:30,973 INFO L225 Difference]: With dead ends: 21453 [2018-07-24 12:13:30,973 INFO L226 Difference]: Without dead ends: 8476 [2018-07-24 12:13:31,014 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:13:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2018-07-24 12:13:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 7606. [2018-07-24 12:13:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7606 states. [2018-07-24 12:13:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 8890 transitions. [2018-07-24 12:13:31,177 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 8890 transitions. Word has length 193 [2018-07-24 12:13:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:31,178 INFO L471 AbstractCegarLoop]: Abstraction has 7606 states and 8890 transitions. [2018-07-24 12:13:31,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:13:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 8890 transitions. [2018-07-24 12:13:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-24 12:13:31,181 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:31,182 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:13:31,182 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 12:13:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash -373296784, now seen corresponding path program 1 times [2018-07-24 12:13:31,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:31,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:31,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:31,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:31,803 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-07-24 12:13:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:32,219 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:32,219 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 12:13:32,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:32,235 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:32,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:34,670 WARN L169 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 38 [2018-07-24 12:13:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:34,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:38,262 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:13:38,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 12:13:38,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:38,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:13:38,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:13:38,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-07-24 12:13:38,264 INFO L87 Difference]: Start difference. First operand 7606 states and 8890 transitions. Second operand 6 states. [2018-07-24 12:14:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:05,903 INFO L93 Difference]: Finished difference Result 18892 states and 22699 transitions. [2018-07-24 12:14:05,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:14:05,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2018-07-24 12:14:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:05,940 INFO L225 Difference]: With dead ends: 18892 [2018-07-24 12:14:05,940 INFO L226 Difference]: Without dead ends: 11284 [2018-07-24 12:14:05,959 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 507 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-07-24 12:14:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11284 states. [2018-07-24 12:14:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11284 to 10948. [2018-07-24 12:14:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10948 states. [2018-07-24 12:14:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10948 states to 10948 states and 13101 transitions. [2018-07-24 12:14:06,186 INFO L78 Accepts]: Start accepts. Automaton has 10948 states and 13101 transitions. Word has length 256 [2018-07-24 12:14:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:06,186 INFO L471 AbstractCegarLoop]: Abstraction has 10948 states and 13101 transitions. [2018-07-24 12:14:06,187 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:14:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 10948 states and 13101 transitions. [2018-07-24 12:14:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-07-24 12:14:06,199 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:06,199 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:06,199 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 12:14:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2019140450, now seen corresponding path program 1 times [2018-07-24 12:14:06,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:06,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:06,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:06,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:06,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 12:14:06,693 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:06,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:14:06,693 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:06,694 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:14:06,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:14:06,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:06,695 INFO L87 Difference]: Start difference. First operand 10948 states and 13101 transitions. Second operand 3 states. [2018-07-24 12:14:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:10,202 INFO L93 Difference]: Finished difference Result 27838 states and 34227 transitions. [2018-07-24 12:14:10,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:14:10,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 453 [2018-07-24 12:14:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:10,271 INFO L225 Difference]: With dead ends: 27838 [2018-07-24 12:14:10,272 INFO L226 Difference]: Without dead ends: 17204 [2018-07-24 12:14:10,301 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17204 states. [2018-07-24 12:14:10,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17204 to 17027. [2018-07-24 12:14:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17027 states. [2018-07-24 12:14:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17027 states to 17027 states and 20732 transitions. [2018-07-24 12:14:10,629 INFO L78 Accepts]: Start accepts. Automaton has 17027 states and 20732 transitions. Word has length 453 [2018-07-24 12:14:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:10,631 INFO L471 AbstractCegarLoop]: Abstraction has 17027 states and 20732 transitions. [2018-07-24 12:14:10,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:14:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17027 states and 20732 transitions. [2018-07-24 12:14:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-07-24 12:14:10,647 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:10,647 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:10,648 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 12:14:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash 794252150, now seen corresponding path program 1 times [2018-07-24 12:14:10,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:10,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:10,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:10,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:10,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 133 proven. 91 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:14:11,361 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:11,361 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:11,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:11,376 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:11,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 12:14:12,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 133 proven. 91 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:14:12,345 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:12,345 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:14:12,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:12,361 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:12,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 12:14:13,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 133 proven. 91 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:14:13,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:13,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:14:13,446 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:13,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:14:13,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:14:13,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:14:13,448 INFO L87 Difference]: Start difference. First operand 17027 states and 20732 transitions. Second operand 9 states. [2018-07-24 12:14:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:20,161 INFO L93 Difference]: Finished difference Result 38175 states and 50974 transitions. [2018-07-24 12:14:20,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:14:20,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2018-07-24 12:14:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:20,267 INFO L225 Difference]: With dead ends: 38175 [2018-07-24 12:14:20,267 INFO L226 Difference]: Without dead ends: 21462 [2018-07-24 12:14:20,350 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1950 GetRequests, 1930 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:14:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21462 states. [2018-07-24 12:14:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21462 to 21127. [2018-07-24 12:14:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21127 states. [2018-07-24 12:14:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 26772 transitions. [2018-07-24 12:14:20,854 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 26772 transitions. Word has length 482 [2018-07-24 12:14:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:20,855 INFO L471 AbstractCegarLoop]: Abstraction has 21127 states and 26772 transitions. [2018-07-24 12:14:20,855 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:14:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 26772 transitions. [2018-07-24 12:14:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-07-24 12:14:20,871 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:20,872 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:20,872 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 12:14:20,873 INFO L82 PathProgramCache]: Analyzing trace with hash -99807734, now seen corresponding path program 1 times [2018-07-24 12:14:20,873 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:20,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:20,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:20,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:20,874 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:21,560 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:21,560 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:21,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:21,570 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:21,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:22,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:22,352 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:22,352 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:14:22,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:22,368 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:22,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:23,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:23,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:23,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:14:23,376 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:23,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:14:23,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:14:23,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:14:23,379 INFO L87 Difference]: Start difference. First operand 21127 states and 26772 transitions. Second operand 9 states. [2018-07-24 12:14:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:29,718 INFO L93 Difference]: Finished difference Result 39213 states and 48810 transitions. [2018-07-24 12:14:29,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:14:29,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 570 [2018-07-24 12:14:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:29,774 INFO L225 Difference]: With dead ends: 39213 [2018-07-24 12:14:29,774 INFO L226 Difference]: Without dead ends: 18400 [2018-07-24 12:14:29,847 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2302 GetRequests, 2282 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:14:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18400 states. [2018-07-24 12:14:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18400 to 17843. [2018-07-24 12:14:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17843 states. [2018-07-24 12:14:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17843 states to 17843 states and 19935 transitions. [2018-07-24 12:14:30,124 INFO L78 Accepts]: Start accepts. Automaton has 17843 states and 19935 transitions. Word has length 570 [2018-07-24 12:14:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:30,126 INFO L471 AbstractCegarLoop]: Abstraction has 17843 states and 19935 transitions. [2018-07-24 12:14:30,126 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:14:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17843 states and 19935 transitions. [2018-07-24 12:14:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-07-24 12:14:30,143 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:30,143 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:14:30,143 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:14:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1508366290, now seen corresponding path program 1 times [2018-07-24 12:14:30,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:30,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:30,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:30,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:30,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-07-24 12:14:31,227 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:31,228 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:31,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:31,235 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:31,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:58,961 WARN L169 SmtUtils]: Spent 27.39 s on a formula simplification. DAG size of input: 118 DAG size of output: 59 [2018-07-24 12:14:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-07-24 12:14:59,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:59,853 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 18 [2018-07-24 12:15:00,000 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-07-24 12:15:01,050 WARN L169 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 26 [2018-07-24 12:15:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 124 proven. 0 refuted. 196 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:15:07,531 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:15:07,531 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:15:07,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:07,549 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:15:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:08,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:15:12,524 WARN L169 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 118 DAG size of output: 16 [2018-07-24 12:15:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-07-24 12:15:12,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:15:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-07-24 12:15:13,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:15:13,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 5, 5] total 19 [2018-07-24 12:15:13,091 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:15:13,093 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 12:15:13,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 12:15:13,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=267, Unknown=2, NotChecked=0, Total=342 [2018-07-24 12:15:13,093 INFO L87 Difference]: Start difference. First operand 17843 states and 19935 transitions. Second operand 10 states. [2018-07-24 12:15:26,644 WARN L169 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-07-24 12:15:44,072 WARN L169 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 61 Received shutdown request... [2018-07-24 12:16:19,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 12:16:19,430 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:16:19,435 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:16:19,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:16:19 BoogieIcfgContainer [2018-07-24 12:16:19,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:16:19,436 INFO L168 Benchmark]: Toolchain (without parser) took 252864.15 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 439.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,437 INFO L168 Benchmark]: CDTParser took 0.25 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 12:16:19,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1349.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 241.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,440 INFO L168 Benchmark]: Boogie Preprocessor took 576.64 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 892.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,440 INFO L168 Benchmark]: RCFGBuilder took 5902.86 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 310.6 MB). Peak memory consumption was 310.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,441 INFO L168 Benchmark]: TraceAbstraction took 244786.24 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 121.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:16:19,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1349.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 241.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 576.64 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 892.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5902.86 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 310.6 MB). Peak memory consumption was 310.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244786.24 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 121.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (17843states) and interpolant automaton (currently 23 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (32523 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 244.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 173.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2857 SDtfs, 17462 SDslu, 2749 SDs, 0 SdLazy, 31100 SolverSat, 6354 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 141.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8170 GetRequests, 8026 SyntacticMatches, 19 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 71.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21127occurred 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: 2.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 2747 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 64.2s InterpolantComputationTime, 7147 NumberOfCodeBlocks, 7147 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11132 ConstructedInterpolants, 837 QuantifiedInterpolants, 30432452 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5979 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 32 InterpolantComputations, 9 PerfectInterpolantSequences, 5938/6747 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/Problem15_label39_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-16-19-465.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label39_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-16-19-465.csv Completed graceful shutdown