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_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:07:49,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:07:49,706 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:07:49,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:07:49,724 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:07:49,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:07:49,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:07:49,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:07:49,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:07:49,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:07:49,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:07:49,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:07:49,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:07:49,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:07:49,742 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:07:49,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:07:49,744 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:07:49,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:07:49,750 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:07:49,751 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:07:49,754 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:07:49,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:07:49,758 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:07:49,759 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:07:49,759 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:07:49,760 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:07:49,761 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:07:49,762 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:07:49,763 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:07:49,766 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:07:49,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:07:49,767 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:07:49,768 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:07:49,768 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:07:49,769 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:07:49,771 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:07:49,772 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 12:07:49,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:07:49,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:07:49,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:07:49,790 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:07:49,790 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:07:49,790 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:07:49,790 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:07:49,791 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:07:49,791 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:07:49,791 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:07:49,791 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:07:49,792 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:07:49,792 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:07:49,792 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:07:49,792 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:07:49,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:07:49,793 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:07:49,793 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:07:49,793 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:07:49,793 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:07:49,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:07:49,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:07:49,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:07:49,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:07:49,794 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:07:49,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:07:49,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:07:49,795 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:07:49,795 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:07:49,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:07:49,796 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:07:49,796 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:07:49,796 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:07:49,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:07:49,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:07:49,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:07:49,870 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:07:49,871 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:07:49,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-07-24 12:07:50,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b4ad64d/ef509a835caa4fd4994f615faf29e427/FLAGd9deba3e0 [2018-07-24 12:07:50,602 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:07:50,603 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-07-24 12:07:50,633 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b4ad64d/ef509a835caa4fd4994f615faf29e427/FLAGd9deba3e0 [2018-07-24 12:07:50,655 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b4ad64d/ef509a835caa4fd4994f615faf29e427 [2018-07-24 12:07:50,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:07:50,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:07:50,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:50,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:07:50,679 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:07:50,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:50" (1/1) ... [2018-07-24 12:07:50,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dc4ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:50, skipping insertion in model container [2018-07-24 12:07:50,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:50" (1/1) ... [2018-07-24 12:07:50,930 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:07:51,525 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:51,542 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:07:52,228 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:52,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52 WrapperNode [2018-07-24 12:07:52,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:52,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:52,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:07:52,390 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:07:52,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:52,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:52,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:52,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:07:52,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:07:52,650 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:07:53,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (1/1) ... [2018-07-24 12:07:53,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:07:53,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:07:53,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:07:53,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:07:53,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (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 12:07:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:07:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:07:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:07:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:07:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:07:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:07:53,331 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 12:07:53,332 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 12:07:53,332 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 12:07:53,332 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 12:07:59,939 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:07:59,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:07:59 BoogieIcfgContainer [2018-07-24 12:07:59,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:07:59,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:07:59,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:07:59,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:07:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:07:50" (1/3) ... [2018-07-24 12:07:59,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:07:59, skipping insertion in model container [2018-07-24 12:07:59,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:52" (2/3) ... [2018-07-24 12:07:59,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:07:59, skipping insertion in model container [2018-07-24 12:07:59,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:07:59" (3/3) ... [2018-07-24 12:07:59,948 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label03_false-unreach-call.c [2018-07-24 12:07:59,959 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:07:59,967 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:08:00,025 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:08:00,026 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:08:00,026 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:08:00,026 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:08:00,027 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:08:00,027 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:08:00,027 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:08:00,027 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:08:00,027 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:08:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:08:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-24 12:08:00,079 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:00,080 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:00,080 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 12:08:00,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1859376252, now seen corresponding path program 1 times [2018-07-24 12:08:00,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:00,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:00,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:00,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:00,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:00,533 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:08:00,643 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 12:08:00,646 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:00,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:00,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:00,653 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:00,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:00,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:00,673 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-07-24 12:08:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:04,731 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-07-24 12:08:04,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:04,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-07-24 12:08:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:04,761 INFO L225 Difference]: With dead ends: 1198 [2018-07-24 12:08:04,761 INFO L226 Difference]: Without dead ends: 758 [2018-07-24 12:08:04,770 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-07-24 12:08:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-07-24 12:08:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-07-24 12:08:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-07-24 12:08:04,897 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 30 [2018-07-24 12:08:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:04,898 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-07-24 12:08:04,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-07-24 12:08:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 12:08:04,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:04,909 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:04,909 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 12:08:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash -90651264, now seen corresponding path program 1 times [2018-07-24 12:08:04,910 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:04,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:04,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:04,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:04,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:05,495 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:05,496 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:08:05,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:05,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:08:05,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:08:05,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:08:05,500 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 6 states. [2018-07-24 12:08:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:14,561 INFO L93 Difference]: Finished difference Result 2140 states and 3804 transitions. [2018-07-24 12:08:14,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:14,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-07-24 12:08:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:14,580 INFO L225 Difference]: With dead ends: 2140 [2018-07-24 12:08:14,580 INFO L226 Difference]: Without dead ends: 1392 [2018-07-24 12:08:14,586 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:08:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2018-07-24 12:08:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1379. [2018-07-24 12:08:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2018-07-24 12:08:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2168 transitions. [2018-07-24 12:08:14,671 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2168 transitions. Word has length 104 [2018-07-24 12:08:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:14,671 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2168 transitions. [2018-07-24 12:08:14,672 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:08:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2168 transitions. [2018-07-24 12:08:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-24 12:08:14,677 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:14,678 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:14,678 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 12:08:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 540322824, now seen corresponding path program 1 times [2018-07-24 12:08:14,682 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:14,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:14,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:14,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:14,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:15,005 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:08:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:15,392 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:15,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:08:15,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:15,393 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:08:15,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:08:15,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:08:15,395 INFO L87 Difference]: Start difference. First operand 1379 states and 2168 transitions. Second operand 6 states. [2018-07-24 12:08:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:23,913 INFO L93 Difference]: Finished difference Result 3398 states and 5434 transitions. [2018-07-24 12:08:23,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:23,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-07-24 12:08:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:23,930 INFO L225 Difference]: With dead ends: 3398 [2018-07-24 12:08:23,930 INFO L226 Difference]: Without dead ends: 2025 [2018-07-24 12:08:23,938 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:08:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2018-07-24 12:08:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2003. [2018-07-24 12:08:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2018-07-24 12:08:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2887 transitions. [2018-07-24 12:08:23,998 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2887 transitions. Word has length 116 [2018-07-24 12:08:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:23,999 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 2887 transitions. [2018-07-24 12:08:23,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:08:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2887 transitions. [2018-07-24 12:08:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 12:08:24,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:24,002 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:24,003 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 12:08:24,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1165284124, now seen corresponding path program 1 times [2018-07-24 12:08:24,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:24,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:24,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:24,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:24,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:24,217 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:24,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:08:24,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:24,218 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:08:24,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:08:24,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:08:24,219 INFO L87 Difference]: Start difference. First operand 2003 states and 2887 transitions. Second operand 6 states. [2018-07-24 12:08:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:29,539 INFO L93 Difference]: Finished difference Result 4661 states and 6800 transitions. [2018-07-24 12:08:29,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:29,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-24 12:08:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:29,556 INFO L225 Difference]: With dead ends: 4661 [2018-07-24 12:08:29,556 INFO L226 Difference]: Without dead ends: 2664 [2018-07-24 12:08:29,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:08:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2018-07-24 12:08:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2636. [2018-07-24 12:08:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2636 states. [2018-07-24 12:08:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3543 transitions. [2018-07-24 12:08:29,638 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3543 transitions. Word has length 122 [2018-07-24 12:08:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:29,639 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 3543 transitions. [2018-07-24 12:08:29,639 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:08:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3543 transitions. [2018-07-24 12:08:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-24 12:08:29,643 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:29,643 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:29,644 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 12:08:29,644 INFO L82 PathProgramCache]: Analyzing trace with hash -296015609, now seen corresponding path program 1 times [2018-07-24 12:08:29,644 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:29,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:29,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:29,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:29,645 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:29,848 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:29,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:08:29,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:29,849 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:08:29,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:08:29,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:08:29,850 INFO L87 Difference]: Start difference. First operand 2636 states and 3543 transitions. Second operand 6 states. [2018-07-24 12:08:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:39,745 INFO L93 Difference]: Finished difference Result 8424 states and 11627 transitions. [2018-07-24 12:08:39,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:08:39,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-07-24 12:08:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:39,786 INFO L225 Difference]: With dead ends: 8424 [2018-07-24 12:08:39,786 INFO L226 Difference]: Without dead ends: 5794 [2018-07-24 12:08:39,804 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:08:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2018-07-24 12:08:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 5674. [2018-07-24 12:08:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5674 states. [2018-07-24 12:08:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 6911 transitions. [2018-07-24 12:08:39,946 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 6911 transitions. Word has length 154 [2018-07-24 12:08:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:39,947 INFO L471 AbstractCegarLoop]: Abstraction has 5674 states and 6911 transitions. [2018-07-24 12:08:39,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:08:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 6911 transitions. [2018-07-24 12:08:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-24 12:08:39,952 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:39,953 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:08:39,953 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 12:08:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash 364503928, now seen corresponding path program 1 times [2018-07-24 12:08:39,953 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:39,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:39,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:39,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:39,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:40,188 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-07-24 12:08:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:08:40,204 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:40,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:40,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:40,205 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:40,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:40,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:40,206 INFO L87 Difference]: Start difference. First operand 5674 states and 6911 transitions. Second operand 3 states. [2018-07-24 12:08:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:44,918 INFO L93 Difference]: Finished difference Result 16065 states and 20020 transitions. [2018-07-24 12:08:44,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:44,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-07-24 12:08:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:44,962 INFO L225 Difference]: With dead ends: 16065 [2018-07-24 12:08:44,962 INFO L226 Difference]: Without dead ends: 10397 [2018-07-24 12:08:44,987 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10397 states. [2018-07-24 12:08:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10397 to 10370. [2018-07-24 12:08:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10370 states. [2018-07-24 12:08:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10370 states to 10370 states and 12763 transitions. [2018-07-24 12:08:45,200 INFO L78 Accepts]: Start accepts. Automaton has 10370 states and 12763 transitions. Word has length 198 [2018-07-24 12:08:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:45,201 INFO L471 AbstractCegarLoop]: Abstraction has 10370 states and 12763 transitions. [2018-07-24 12:08:45,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10370 states and 12763 transitions. [2018-07-24 12:08:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-24 12:08:45,210 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:45,211 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:08:45,211 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 12:08:45,211 INFO L82 PathProgramCache]: Analyzing trace with hash 750705500, now seen corresponding path program 1 times [2018-07-24 12:08:45,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:45,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:45,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:08:45,625 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:08:45,625 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 12:08:45,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:45,636 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:08:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:45,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:08:47,009 WARN L169 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:08:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:08:47,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:08:47,749 WARN L169 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:08:48,414 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 12:08:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 46 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:08:48,873 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:08:48,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 12:08:48,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:48,876 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:08:48,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:08:48,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:08:48,876 INFO L87 Difference]: Start difference. First operand 10370 states and 12763 transitions. Second operand 5 states. [2018-07-24 12:08:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:59,892 INFO L93 Difference]: Finished difference Result 22160 states and 27239 transitions. [2018-07-24 12:08:59,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:08:59,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-07-24 12:08:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:59,963 INFO L225 Difference]: With dead ends: 22160 [2018-07-24 12:08:59,964 INFO L226 Difference]: Without dead ends: 11796 [2018-07-24 12:09:00,012 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:09:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11796 states. [2018-07-24 12:09:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11796 to 11504. [2018-07-24 12:09:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11504 states. [2018-07-24 12:09:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 14018 transitions. [2018-07-24 12:09:00,266 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 14018 transitions. Word has length 211 [2018-07-24 12:09:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:00,266 INFO L471 AbstractCegarLoop]: Abstraction has 11504 states and 14018 transitions. [2018-07-24 12:09:00,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:09:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 14018 transitions. [2018-07-24 12:09:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-24 12:09:00,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:00,279 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:09:00,279 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 12:09:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1626878960, now seen corresponding path program 1 times [2018-07-24 12:09:00,279 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:00,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:00,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:00,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:00,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 49 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:09:00,988 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:00,988 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 12:09:01,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:01,006 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:01,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 12:09:01,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 12:09:01,994 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:09:01,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-07-24 12:09:01,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:09:01,995 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:09:01,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:09:01,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:09:01,996 INFO L87 Difference]: Start difference. First operand 11504 states and 14018 transitions. Second operand 5 states. [2018-07-24 12:09:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:07,812 INFO L93 Difference]: Finished difference Result 33859 states and 42327 transitions. [2018-07-24 12:09:07,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:09:07,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2018-07-24 12:09:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:07,926 INFO L225 Difference]: With dead ends: 33859 [2018-07-24 12:09:07,927 INFO L226 Difference]: Without dead ends: 22669 [2018-07-24 12:09:08,097 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 497 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:09:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2018-07-24 12:09:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 22188. [2018-07-24 12:09:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22188 states. [2018-07-24 12:09:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 26011 transitions. [2018-07-24 12:09:08,562 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 26011 transitions. Word has length 250 [2018-07-24 12:09:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 22188 states and 26011 transitions. [2018-07-24 12:09:08,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:09:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 26011 transitions. [2018-07-24 12:09:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 12:09:08,579 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:08,579 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:09:08,579 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 12:09:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -274634637, now seen corresponding path program 1 times [2018-07-24 12:09:08,580 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:08,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:08,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:08,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:08,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:09,672 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:09:10,125 WARN L169 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-24 12:09:10,482 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:09:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 81 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:10,828 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:10,828 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 12:09:10,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:10,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:10,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 277 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:09:11,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 79 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:11,834 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:11,834 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:09:11,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:11,851 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:12,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 227 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:09:12,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 79 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:13,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:09:13,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:09:13,451 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:09:13,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:09:13,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:09:13,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:09:13,454 INFO L87 Difference]: Start difference. First operand 22188 states and 26011 transitions. Second operand 14 states. [2018-07-24 12:09:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:47,593 INFO L93 Difference]: Finished difference Result 60795 states and 74718 transitions. [2018-07-24 12:09:47,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 12:09:47,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 307 [2018-07-24 12:09:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:47,712 INFO L225 Difference]: With dead ends: 60795 [2018-07-24 12:09:47,712 INFO L226 Difference]: Without dead ends: 38020 [2018-07-24 12:09:47,785 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1306 GetRequests, 1243 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=802, Invalid=2620, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 12:09:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38020 states. [2018-07-24 12:09:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38020 to 36076. [2018-07-24 12:09:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36076 states. [2018-07-24 12:09:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36076 states to 36076 states and 42825 transitions. [2018-07-24 12:09:48,467 INFO L78 Accepts]: Start accepts. Automaton has 36076 states and 42825 transitions. Word has length 307 [2018-07-24 12:09:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:48,467 INFO L471 AbstractCegarLoop]: Abstraction has 36076 states and 42825 transitions. [2018-07-24 12:09:48,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:09:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 36076 states and 42825 transitions. [2018-07-24 12:09:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-24 12:09:48,503 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:48,503 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:48,504 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 12:09:48,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1079957666, now seen corresponding path program 1 times [2018-07-24 12:09:48,504 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:48,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:48,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:48,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:48,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 81 proven. 245 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:49,479 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:49,479 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 12:09:49,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:49,488 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:49,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 281 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:09:50,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:50,419 WARN L169 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-07-24 12:09:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 79 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:50,986 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:50,986 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 12:09:51,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:51,006 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:51,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 231 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:09:51,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 79 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:09:52,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:09:52,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:09:52,427 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:09:52,428 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:09:52,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:09:52,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:09:52,429 INFO L87 Difference]: Start difference. First operand 36076 states and 42825 transitions. Second operand 14 states. [2018-07-24 12:10:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:10:25,139 INFO L93 Difference]: Finished difference Result 78391 states and 94466 transitions. [2018-07-24 12:10:25,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 12:10:25,140 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 392 [2018-07-24 12:10:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:10:25,253 INFO L225 Difference]: With dead ends: 78391 [2018-07-24 12:10:25,253 INFO L226 Difference]: Without dead ends: 41982 [2018-07-24 12:10:25,337 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 1582 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=889, Invalid=2893, Unknown=0, NotChecked=0, Total=3782 [2018-07-24 12:10:25,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41982 states. [2018-07-24 12:10:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41982 to 39995. [2018-07-24 12:10:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39995 states. [2018-07-24 12:10:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39995 states to 39995 states and 47053 transitions. [2018-07-24 12:10:25,994 INFO L78 Accepts]: Start accepts. Automaton has 39995 states and 47053 transitions. Word has length 392 [2018-07-24 12:10:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:10:25,995 INFO L471 AbstractCegarLoop]: Abstraction has 39995 states and 47053 transitions. [2018-07-24 12:10:25,995 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:10:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 39995 states and 47053 transitions. [2018-07-24 12:10:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-07-24 12:10:26,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:26,023 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:26,024 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 12:10:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash 96876480, now seen corresponding path program 1 times [2018-07-24 12:10:26,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:26,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:26,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:26,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:26,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 80 proven. 169 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 12:10:27,682 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:27,682 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 12:10:27,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:27,699 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:27,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:10:28,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 153 proven. 80 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:10:28,937 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:28,937 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 12:10:28,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:28,955 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:29,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 12:10:29,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:29,818 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:10:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 77 proven. 171 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:10:30,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:10:30,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 18 [2018-07-24 12:10:30,516 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:10:30,517 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:10:30,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:10:30,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:10:30,518 INFO L87 Difference]: Start difference. First operand 39995 states and 47053 transitions. Second operand 11 states. [2018-07-24 12:10:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:10:53,414 INFO L93 Difference]: Finished difference Result 125688 states and 159244 transitions. [2018-07-24 12:10:53,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-24 12:10:53,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 449 [2018-07-24 12:10:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:10:53,738 INFO L225 Difference]: With dead ends: 125688 [2018-07-24 12:10:53,739 INFO L226 Difference]: Without dead ends: 85562 [2018-07-24 12:10:53,895 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1872 GetRequests, 1808 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=727, Invalid=3179, Unknown=0, NotChecked=0, Total=3906 [2018-07-24 12:10:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85562 states. [2018-07-24 12:10:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85562 to 79950. [2018-07-24 12:10:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79950 states. [2018-07-24 12:10:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79950 states to 79950 states and 93865 transitions. [2018-07-24 12:10:55,327 INFO L78 Accepts]: Start accepts. Automaton has 79950 states and 93865 transitions. Word has length 449 [2018-07-24 12:10:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:10:55,327 INFO L471 AbstractCegarLoop]: Abstraction has 79950 states and 93865 transitions. [2018-07-24 12:10:55,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:10:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 79950 states and 93865 transitions. [2018-07-24 12:10:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-07-24 12:10:55,371 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:55,372 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:55,372 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 12:10:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2012509517, now seen corresponding path program 1 times [2018-07-24 12:10:55,373 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:55,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:55,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:55,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:55,824 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:10:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 150 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 12:10:56,267 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:56,267 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 12:10:56,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:56,275 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:56,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:56,891 WARN L169 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-07-24 12:10:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:10:57,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:10:57,292 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:10:57,292 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 12:10:57,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:57,308 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:10:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:57,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:10:57,873 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:10:58,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:10:58,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-07-24 12:10:58,134 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:10:58,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:10:58,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:10:58,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:10:58,137 INFO L87 Difference]: Start difference. First operand 79950 states and 93865 transitions. Second operand 11 states. [2018-07-24 12:11:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:10,278 INFO L93 Difference]: Finished difference Result 165723 states and 197772 transitions. [2018-07-24 12:11:10,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:11:10,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 537 [2018-07-24 12:11:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:10,567 INFO L225 Difference]: With dead ends: 165723 [2018-07-24 12:11:10,567 INFO L226 Difference]: Without dead ends: 85723 [2018-07-24 12:11:10,764 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2187 GetRequests, 2154 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-07-24 12:11:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85723 states. [2018-07-24 12:11:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85723 to 83323. [2018-07-24 12:11:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83323 states. [2018-07-24 12:11:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83323 states to 83323 states and 93528 transitions. [2018-07-24 12:11:12,143 INFO L78 Accepts]: Start accepts. Automaton has 83323 states and 93528 transitions. Word has length 537 [2018-07-24 12:11:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:12,144 INFO L471 AbstractCegarLoop]: Abstraction has 83323 states and 93528 transitions. [2018-07-24 12:11:12,144 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:11:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 83323 states and 93528 transitions. [2018-07-24 12:11:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-07-24 12:11:12,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:12,167 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:12,167 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash 243018464, now seen corresponding path program 1 times [2018-07-24 12:11:12,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:12,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:12,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:12,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:12,169 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 129 proven. 107 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 12:11:13,381 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:13,381 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:13,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:13,390 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:13,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:11:13,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 153 proven. 80 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-07-24 12:11:14,312 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:14,312 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:11:14,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:14,328 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:14,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 284 proven. 75 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 12:11:15,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 153 proven. 80 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-07-24 12:11:15,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:11:15,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 7, 5] total 22 [2018-07-24 12:11:15,436 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:11:15,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:11:15,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:11:15,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:11:15,437 INFO L87 Difference]: Start difference. First operand 83323 states and 93528 transitions. Second operand 15 states. [2018-07-24 12:11:25,105 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2018-07-24 12:11:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:39,395 INFO L93 Difference]: Finished difference Result 179825 states and 208355 transitions. [2018-07-24 12:11:39,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-24 12:11:39,395 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 538 [2018-07-24 12:11:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:39,757 INFO L225 Difference]: With dead ends: 179825 [2018-07-24 12:11:39,757 INFO L226 Difference]: Without dead ends: 98990 [2018-07-24 12:11:39,912 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2269 GetRequests, 2178 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1416, Invalid=6416, Unknown=0, NotChecked=0, Total=7832 [2018-07-24 12:11:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98990 states. [2018-07-24 12:11:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98990 to 97108. [2018-07-24 12:11:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97108 states. [2018-07-24 12:11:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97108 states to 97108 states and 109757 transitions. [2018-07-24 12:11:41,747 INFO L78 Accepts]: Start accepts. Automaton has 97108 states and 109757 transitions. Word has length 538 [2018-07-24 12:11:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:41,748 INFO L471 AbstractCegarLoop]: Abstraction has 97108 states and 109757 transitions. [2018-07-24 12:11:41,748 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:11:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 97108 states and 109757 transitions. [2018-07-24 12:11:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-07-24 12:11:41,802 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:41,803 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:41,803 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1757905913, now seen corresponding path program 1 times [2018-07-24 12:11:41,804 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:41,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:41,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:41,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:41,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-07-24 12:11:42,290 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:42,290 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:42,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:42,301 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:42,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:11:43,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-07-24 12:11:43,412 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:11:43,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-07-24 12:11:43,412 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:43,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:11:43,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:11:43,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:43,415 INFO L87 Difference]: Start difference. First operand 97108 states and 109757 transitions. Second operand 3 states. [2018-07-24 12:11:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:48,826 INFO L93 Difference]: Finished difference Result 177468 states and 201623 transitions. [2018-07-24 12:11:48,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:11:48,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 647 [2018-07-24 12:11:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:49,065 INFO L225 Difference]: With dead ends: 177468 [2018-07-24 12:11:49,065 INFO L226 Difference]: Without dead ends: 97409 [2018-07-24 12:11:49,218 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1294 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 12:11:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97409 states. Received shutdown request... [2018-07-24 12:11:49,353 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:11:49,358 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:11:49,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:11:49 BoogieIcfgContainer [2018-07-24 12:11:49,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:11:49,360 INFO L168 Benchmark]: Toolchain (without parser) took 238691.75 ms. Allocated memory was 1.6 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -266.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:11:49,361 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:11:49,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1717.35 ms. Allocated memory is still 1.6 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 12:11:49,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 259.81 ms. Allocated memory is still 1.6 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 12:11:49,363 INFO L168 Benchmark]: Boogie Preprocessor took 612.56 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 893.4 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 89.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:11:49,364 INFO L168 Benchmark]: RCFGBuilder took 6677.22 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: 322.6 MB). Peak memory consumption was 322.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:11:49,364 INFO L168 Benchmark]: TraceAbstraction took 229417.97 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 295.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:11:49,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1717.35 ms. Allocated memory is still 1.6 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 259.81 ms. Allocated memory is still 1.6 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 612.56 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 893.4 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 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6677.22 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: 322.6 MB). Peak memory consumption was 322.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229417.97 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 295.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 229.3s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 192.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2726 SDtfs, 44496 SDslu, 4980 SDs, 0 SdLazy, 64093 SolverSat, 15317 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11569 GetRequests, 11188 SyntacticMatches, 37 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5760 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97108occurred in iteration=13, 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: 7.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 14812 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 22.3s InterpolantComputationTime, 9609 NumberOfCodeBlocks, 9609 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 15123 ConstructedInterpolants, 2 QuantifiedInterpolants, 25466737 SizeOfPredicates, 38 NumberOfNonLiveVariables, 8378 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 9433/12034 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_label03_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-11-49-389.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label03_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-11-49-389.csv Completed graceful shutdown