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/Problem17_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:25:11,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:25:11,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:25:11,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:25:11,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:25:11,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:25:11,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:25:11,917 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:25:11,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:25:11,920 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:25:11,921 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:25:11,921 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:25:11,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:25:11,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:25:11,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:25:11,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:25:11,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:25:11,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:25:11,930 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:25:11,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:25:11,933 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:25:11,934 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:25:11,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:25:11,944 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:25:11,944 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:25:11,945 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:25:11,946 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:25:11,946 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 12:25:11,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:25:11,971 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:25:11,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:25:11,972 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:25:11,973 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:25:11,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:25:11,973 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:25:11,973 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:25:11,973 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:25:11,974 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:25:11,974 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:25:11,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:25:11,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:25:11,975 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:25:11,975 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:25:11,975 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:25:11,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:25:11,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:25:11,976 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:25:11,976 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:25:11,976 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:25:11,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:25:11,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:25:11,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:25:11,977 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:25:11,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:25:11,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:25:11,978 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:25:11,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:25:11,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:25:11,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:25:11,979 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:25:11,979 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:25:12,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:25:12,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:25:12,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:25:12,041 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:25:12,041 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:25:12,042 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-07-24 12:25:12,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21d07c8/7761dbab3d4c4ed194b37ba44cf0ab63/FLAG06b20f8b6 [2018-07-24 12:25:12,832 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:25:12,834 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-07-24 12:25:12,863 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21d07c8/7761dbab3d4c4ed194b37ba44cf0ab63/FLAG06b20f8b6 [2018-07-24 12:25:12,880 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21d07c8/7761dbab3d4c4ed194b37ba44cf0ab63 [2018-07-24 12:25:12,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:25:12,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:25:12,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:25:12,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:25:12,908 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:25:12,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:25:12" (1/1) ... [2018-07-24 12:25:12,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3036c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:12, skipping insertion in model container [2018-07-24 12:25:12,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:25:12" (1/1) ... [2018-07-24 12:25:13,204 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:25:14,006 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:25:14,042 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:25:14,519 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:25:14,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14 WrapperNode [2018-07-24 12:25:14,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:25:14,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:25:14,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:25:14,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:25:14,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:14,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:25:15,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:25:15,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:25:15,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:25:15,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (1/1) ... [2018-07-24 12:25:15,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:25:15,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:25:15,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:25:15,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:25:15,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (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 12:25:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:25:16,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:25:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:25:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:25:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:25:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:25:16,061 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 12:25:16,061 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 12:25:16,062 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 12:25:16,062 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 12:25:27,585 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:25:27,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:25:27 BoogieIcfgContainer [2018-07-24 12:25:27,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:25:27,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:25:27,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:25:27,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:25:27,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:25:12" (1/3) ... [2018-07-24 12:25:27,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7a2a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:25:27, skipping insertion in model container [2018-07-24 12:25:27,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:25:14" (2/3) ... [2018-07-24 12:25:27,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7a2a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:25:27, skipping insertion in model container [2018-07-24 12:25:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:25:27" (3/3) ... [2018-07-24 12:25:27,603 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34_false-unreach-call.c [2018-07-24 12:25:27,612 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:25:27,622 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:25:27,681 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:25:27,682 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:25:27,682 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:25:27,682 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:25:27,682 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:25:27,683 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:25:27,683 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:25:27,683 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:25:27,683 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:25:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 12:25:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-24 12:25:27,728 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:25:27,729 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] [2018-07-24 12:25:27,729 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 12:25:27,735 INFO L82 PathProgramCache]: Analyzing trace with hash -704972492, now seen corresponding path program 1 times [2018-07-24 12:25:27,738 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:25:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:27,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:27,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:27,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:25:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:28,205 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 12:25:28,222 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 12:25:28,226 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:25:28,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:25:28,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:25:28,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:25:28,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:25:28,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:25:28,260 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 12:25:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:25:39,578 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-07-24 12:25:39,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:25:39,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-07-24 12:25:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:25:39,610 INFO L225 Difference]: With dead ends: 2118 [2018-07-24 12:25:39,610 INFO L226 Difference]: Without dead ends: 1508 [2018-07-24 12:25:39,624 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:25:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-07-24 12:25:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-07-24 12:25:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-07-24 12:25:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-07-24 12:25:39,781 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 26 [2018-07-24 12:25:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:25:39,782 INFO L471 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-07-24 12:25:39,782 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:25:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-07-24 12:25:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-24 12:25:39,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:25:39,793 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:25:39,794 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 12:25:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash 482053666, now seen corresponding path program 1 times [2018-07-24 12:25:39,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:25:39,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:39,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:39,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:39,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:25:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:25:40,259 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:25:40,259 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 12:25:40,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:40,275 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:25:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:40,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:25:46,877 WARN L169 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-07-24 12:25:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:25:47,050 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:25:48,293 WARN L169 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-07-24 12:25:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:25:48,777 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:25:48,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 12:25:48,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:25:48,779 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:25:48,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:25:48,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:25:48,780 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-07-24 12:26:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:26:30,430 INFO L93 Difference]: Finished difference Result 3453 states and 5550 transitions. [2018-07-24 12:26:30,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:26:30,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-07-24 12:26:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:26:30,450 INFO L225 Difference]: With dead ends: 3453 [2018-07-24 12:26:30,451 INFO L226 Difference]: Without dead ends: 2420 [2018-07-24 12:26:30,458 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:26:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2018-07-24 12:26:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2412. [2018-07-24 12:26:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2018-07-24 12:26:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3754 transitions. [2018-07-24 12:26:30,558 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3754 transitions. Word has length 101 [2018-07-24 12:26:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:26:30,558 INFO L471 AbstractCegarLoop]: Abstraction has 2412 states and 3754 transitions. [2018-07-24 12:26:30,559 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:26:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3754 transitions. [2018-07-24 12:26:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-24 12:26:30,567 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:30,568 INFO L353 BasicCegarLoop]: trace histogram [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 12:26:30,568 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 12:26:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1384510622, now seen corresponding path program 1 times [2018-07-24 12:26:30,568 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:30,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:30,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:30,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:30,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:30,835 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:26:30,835 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 12:26:30,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:30,845 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:26:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:30,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:26:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:31,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:26:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:31,228 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:26:31,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 12:26:31,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:31,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:26:31,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:26:31,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:26:31,230 INFO L87 Difference]: Start difference. First operand 2412 states and 3754 transitions. Second operand 3 states. [2018-07-24 12:26:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:26:38,640 INFO L93 Difference]: Finished difference Result 6995 states and 11104 transitions. [2018-07-24 12:26:38,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:26:38,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-07-24 12:26:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:26:38,672 INFO L225 Difference]: With dead ends: 6995 [2018-07-24 12:26:38,672 INFO L226 Difference]: Without dead ends: 4589 [2018-07-24 12:26:38,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 227 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:26:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-07-24 12:26:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4588. [2018-07-24 12:26:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2018-07-24 12:26:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7097 transitions. [2018-07-24 12:26:38,809 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7097 transitions. Word has length 114 [2018-07-24 12:26:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:26:38,810 INFO L471 AbstractCegarLoop]: Abstraction has 4588 states and 7097 transitions. [2018-07-24 12:26:38,810 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:26:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7097 transitions. [2018-07-24 12:26:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-24 12:26:38,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:38,816 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 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 12:26:38,816 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 12:26:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1303934444, now seen corresponding path program 1 times [2018-07-24 12:26:38,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:38,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:38,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:38,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:38,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:39,147 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:26:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:26:39,580 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:26:39,580 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 12:26:39,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:39,597 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:26:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:39,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:26:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:40,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:26:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:40,602 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:26:40,602 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 12:26:40,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:40,632 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:26:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:40,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:26:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 12:26:41,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:26:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 12:26:41,637 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:26:41,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 12:26:41,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:41,638 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:26:41,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:26:41,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:26:41,641 INFO L87 Difference]: Start difference. First operand 4588 states and 7097 transitions. Second operand 5 states. [2018-07-24 12:26:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:26:52,338 INFO L93 Difference]: Finished difference Result 11431 states and 17850 transitions. [2018-07-24 12:26:52,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:26:52,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2018-07-24 12:26:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:26:52,374 INFO L225 Difference]: With dead ends: 11431 [2018-07-24 12:26:52,374 INFO L226 Difference]: Without dead ends: 6849 [2018-07-24 12:26:52,390 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 754 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:26:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-07-24 12:26:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-07-24 12:26:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-07-24 12:26:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9660 transitions. [2018-07-24 12:26:52,559 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9660 transitions. Word has length 191 [2018-07-24 12:26:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:26:52,561 INFO L471 AbstractCegarLoop]: Abstraction has 6849 states and 9660 transitions. [2018-07-24 12:26:52,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:26:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9660 transitions. [2018-07-24 12:26:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-24 12:26:52,564 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:52,565 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:26:52,565 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 12:26:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2139033387, now seen corresponding path program 1 times [2018-07-24 12:26:52,565 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:52,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:52,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:52,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:52,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:52,978 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:26:52,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:26:52,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:52,979 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:26:52,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:26:52,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:26:52,980 INFO L87 Difference]: Start difference. First operand 6849 states and 9660 transitions. Second operand 5 states. [2018-07-24 12:27:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:07,892 INFO L93 Difference]: Finished difference Result 19568 states and 27838 transitions. [2018-07-24 12:27:07,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:27:07,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-07-24 12:27:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:07,951 INFO L225 Difference]: With dead ends: 19568 [2018-07-24 12:27:07,951 INFO L226 Difference]: Without dead ends: 12725 [2018-07-24 12:27:07,975 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:27:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12725 states. [2018-07-24 12:27:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12725 to 12675. [2018-07-24 12:27:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12675 states. [2018-07-24 12:27:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12675 states to 12675 states and 16704 transitions. [2018-07-24 12:27:08,297 INFO L78 Accepts]: Start accepts. Automaton has 12675 states and 16704 transitions. Word has length 192 [2018-07-24 12:27:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:08,298 INFO L471 AbstractCegarLoop]: Abstraction has 12675 states and 16704 transitions. [2018-07-24 12:27:08,298 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:27:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 12675 states and 16704 transitions. [2018-07-24 12:27:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-24 12:27:08,302 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:08,302 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:27:08,303 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 12:27:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1413380943, now seen corresponding path program 1 times [2018-07-24 12:27:08,303 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:08,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:08,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:08,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:08,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:08,621 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 12:27:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:27:08,645 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:08,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:27:08,645 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:08,646 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:27:08,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:27:08,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:08,646 INFO L87 Difference]: Start difference. First operand 12675 states and 16704 transitions. Second operand 4 states. [2018-07-24 12:27:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:19,292 INFO L93 Difference]: Finished difference Result 38150 states and 54247 transitions. [2018-07-24 12:27:19,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:27:19,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-07-24 12:27:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:19,398 INFO L225 Difference]: With dead ends: 38150 [2018-07-24 12:27:19,398 INFO L226 Difference]: Without dead ends: 25481 [2018-07-24 12:27:19,454 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25481 states. [2018-07-24 12:27:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25481 to 25470. [2018-07-24 12:27:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25470 states. [2018-07-24 12:27:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25470 states to 25470 states and 34857 transitions. [2018-07-24 12:27:20,230 INFO L78 Accepts]: Start accepts. Automaton has 25470 states and 34857 transitions. Word has length 203 [2018-07-24 12:27:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:20,231 INFO L471 AbstractCegarLoop]: Abstraction has 25470 states and 34857 transitions. [2018-07-24 12:27:20,231 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:27:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 25470 states and 34857 transitions. [2018-07-24 12:27:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-24 12:27:20,237 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:20,237 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:27:20,237 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 12:27:20,238 INFO L82 PathProgramCache]: Analyzing trace with hash 662989382, now seen corresponding path program 1 times [2018-07-24 12:27:20,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:20,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:20,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:20,546 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:27:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:20,999 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:21,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:27:21,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:21,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:27:21,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:27:21,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:27:21,001 INFO L87 Difference]: Start difference. First operand 25470 states and 34857 transitions. Second operand 6 states. [2018-07-24 12:27:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:31,795 INFO L93 Difference]: Finished difference Result 52821 states and 72924 transitions. [2018-07-24 12:27:31,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:27:31,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2018-07-24 12:27:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:31,894 INFO L225 Difference]: With dead ends: 52821 [2018-07-24 12:27:31,895 INFO L226 Difference]: Without dead ends: 27357 [2018-07-24 12:27:31,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:27:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27357 states. [2018-07-24 12:27:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27357 to 26868. [2018-07-24 12:27:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26868 states. [2018-07-24 12:27:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26868 states to 26868 states and 32537 transitions. [2018-07-24 12:27:32,452 INFO L78 Accepts]: Start accepts. Automaton has 26868 states and 32537 transitions. Word has length 212 [2018-07-24 12:27:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:32,452 INFO L471 AbstractCegarLoop]: Abstraction has 26868 states and 32537 transitions. [2018-07-24 12:27:32,453 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:27:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 26868 states and 32537 transitions. [2018-07-24 12:27:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-24 12:27:32,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:32,467 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:32,467 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 12:27:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 489033859, now seen corresponding path program 1 times [2018-07-24 12:27:32,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:32,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:32,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:32,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:32,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 12:27:33,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:33,650 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 12:27:33,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:33,658 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:33,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:35,884 WARN L169 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-07-24 12:27:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 12:27:36,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:40,994 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:40,994 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 12:27:41,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:41,009 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:41,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:27:49,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:50,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:27:50,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 7, 8] total 27 [2018-07-24 12:27:50,770 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:27:50,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:27:50,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:27:50,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=571, Unknown=5, NotChecked=0, Total=702 [2018-07-24 12:27:50,775 INFO L87 Difference]: Start difference. First operand 26868 states and 32537 transitions. Second operand 14 states. [2018-07-24 12:29:07,530 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 Received shutdown request... [2018-07-24 12:29:20,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-24 12:29:20,811 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:29:20,817 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:29:20,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:29:20 BoogieIcfgContainer [2018-07-24 12:29:20,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:29:20,818 INFO L168 Benchmark]: Toolchain (without parser) took 247922.84 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 230.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:29:20,819 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:29:20,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1923.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:29:20,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 353.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:29:20,821 INFO L168 Benchmark]: Boogie Preprocessor took 814.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 921.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:29:20,822 INFO L168 Benchmark]: RCFGBuilder took 11597.16 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 502.7 MB). Peak memory consumption was 502.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:29:20,823 INFO L168 Benchmark]: TraceAbstraction took 233227.03 ms. Allocated memory was 2.5 GB in the beginning and 3.4 GB in the end (delta: 949.0 MB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:29:20,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1923.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 353.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 814.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 921.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11597.16 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 502.7 MB). Peak memory consumption was 502.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233227.03 ms. Allocated memory was 2.5 GB in the beginning and 3.4 GB in the end (delta: 949.0 MB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 65). Cancelled while BasicCegarLoop was constructing difference of abstraction (26868states) and interpolant automaton (currently 120 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (77070 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 233.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 198.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3145 SDtfs, 21084 SDslu, 3596 SDs, 0 SdLazy, 53921 SolverSat, 8623 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 176.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2487 GetRequests, 2291 SyntacticMatches, 17 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 31.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26868occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1028 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 2476 NumberOfCodeBlocks, 2476 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3613 ConstructedInterpolants, 271 QuantifiedInterpolants, 5178722 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2239 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 1116/1473 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/Problem17_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-29-20-842.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-29-20-842.csv Completed graceful shutdown