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/Problem16_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:16:14,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:16:14,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:16:14,815 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:16:14,815 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:16:14,816 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:16:14,817 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:16:14,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:16:14,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:16:14,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:16:14,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:16:14,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:16:14,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:16:14,824 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:16:14,825 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:16:14,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:16:14,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:16:14,834 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:16:14,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:16:14,841 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:16:14,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:16:14,846 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:16:14,851 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:16:14,865 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:16:14,865 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:16:14,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:16:14,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:16:14,868 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 12:16:14,900 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:16:14,900 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:16:14,903 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:16:14,903 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:16:14,903 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:16:14,903 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:16:14,903 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:16:14,904 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:16:14,904 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:16:14,904 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:16:14,904 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:16:14,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:16:14,905 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:16:14,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:16:14,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:16:14,906 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:16:14,906 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:16:14,906 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:16:14,907 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:16:14,907 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:16:14,907 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:16:14,907 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:16:14,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:16:14,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:16:14,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:16:14,909 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:16:14,909 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:16:14,909 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:16:14,909 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:16:14,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:16:14,910 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:16:14,910 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:16:14,910 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:16:14,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:16:14,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:16:14,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:16:14,981 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:16:14,981 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:16:14,982 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label08_false-unreach-call.c [2018-07-24 12:16:15,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d83f557/b8f4e88fb94144298d4908cfa8e7caaa/FLAG945b9bd2b [2018-07-24 12:16:15,695 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:16:15,696 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label08_false-unreach-call.c [2018-07-24 12:16:15,721 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d83f557/b8f4e88fb94144298d4908cfa8e7caaa/FLAG945b9bd2b [2018-07-24 12:16:15,742 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d83f557/b8f4e88fb94144298d4908cfa8e7caaa [2018-07-24 12:16:15,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:16:15,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:16:15,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:16:15,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:16:15,765 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:16:15,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:16:15" (1/1) ... [2018-07-24 12:16:15,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a088d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:15, skipping insertion in model container [2018-07-24 12:16:15,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:16:15" (1/1) ... [2018-07-24 12:16:16,027 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:16:16,578 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:16:16,596 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:16:16,881 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:16:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16 WrapperNode [2018-07-24 12:16:16,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:16:16,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:16:16,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:16:16,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:16:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:16:17,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:16:17,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:16:17,143 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:16:17,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (1/1) ... [2018-07-24 12:16:17,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:16:17,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:16:17,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:16:17,620 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:16:17,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (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 12:16:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:16:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:16:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:16:17,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:16:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:16:17,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:16:17,698 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 12:16:17,699 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 12:16:17,699 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 12:16:17,699 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 12:16:23,854 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:16:23,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:16:23 BoogieIcfgContainer [2018-07-24 12:16:23,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:16:23,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:16:23,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:16:23,860 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:16:23,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:16:15" (1/3) ... [2018-07-24 12:16:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0794f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:16:23, skipping insertion in model container [2018-07-24 12:16:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:16:16" (2/3) ... [2018-07-24 12:16:23,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0794f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:16:23, skipping insertion in model container [2018-07-24 12:16:23,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:16:23" (3/3) ... [2018-07-24 12:16:23,864 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label08_false-unreach-call.c [2018-07-24 12:16:23,874 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:16:23,883 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:16:23,941 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:16:23,942 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:16:23,943 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:16:23,943 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:16:23,943 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:16:23,943 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:16:23,943 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:16:23,943 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:16:23,944 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:16:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-24 12:16:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 12:16:23,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:23,985 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] [2018-07-24 12:16:23,985 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 12:16:23,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2138924980, now seen corresponding path program 1 times [2018-07-24 12:16:23,994 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:24,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:24,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:24,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:24,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:24,472 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:16:24,587 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 12:16:24,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:16:24,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:16:24,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:24,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:16:24,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:16:24,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:16:24,617 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-24 12:16:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:30,519 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-24 12:16:30,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:16:30,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-07-24 12:16:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:30,546 INFO L225 Difference]: With dead ends: 1156 [2018-07-24 12:16:30,546 INFO L226 Difference]: Without dead ends: 744 [2018-07-24 12:16:30,555 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 12:16:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-24 12:16:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-24 12:16:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 12:16:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-07-24 12:16:30,666 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 24 [2018-07-24 12:16:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:30,666 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-07-24 12:16:30,666 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:16:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-07-24 12:16:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 12:16:30,672 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:30,673 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:16:30,673 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 12:16:30,673 INFO L82 PathProgramCache]: Analyzing trace with hash -419533258, now seen corresponding path program 1 times [2018-07-24 12:16:30,674 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:30,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:30,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:30,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:30,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:31,007 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:16:31,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:16:31,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:31,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:16:31,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:16:31,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:16:31,010 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-07-24 12:16:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:38,649 INFO L93 Difference]: Finished difference Result 2846 states and 5338 transitions. [2018-07-24 12:16:38,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:16:38,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 12:16:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:38,678 INFO L225 Difference]: With dead ends: 2846 [2018-07-24 12:16:38,679 INFO L226 Difference]: Without dead ends: 2108 [2018-07-24 12:16:38,686 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:16:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-07-24 12:16:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-07-24 12:16:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-07-24 12:16:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3354 transitions. [2018-07-24 12:16:38,798 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3354 transitions. Word has length 96 [2018-07-24 12:16:38,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:38,799 INFO L471 AbstractCegarLoop]: Abstraction has 2090 states and 3354 transitions. [2018-07-24 12:16:38,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:16:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3354 transitions. [2018-07-24 12:16:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-24 12:16:38,803 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:38,803 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:16:38,804 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 12:16:38,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1940540962, now seen corresponding path program 1 times [2018-07-24 12:16:38,804 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:38,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:38,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:38,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:38,806 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:39,087 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:16:39,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:16:39,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:39,088 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:16:39,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:16:39,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:16:39,089 INFO L87 Difference]: Start difference. First operand 2090 states and 3354 transitions. Second operand 6 states. [2018-07-24 12:16:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:44,197 INFO L93 Difference]: Finished difference Result 5573 states and 9324 transitions. [2018-07-24 12:16:44,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:16:44,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-07-24 12:16:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:44,223 INFO L225 Difference]: With dead ends: 5573 [2018-07-24 12:16:44,224 INFO L226 Difference]: Without dead ends: 3489 [2018-07-24 12:16:44,232 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:16:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2018-07-24 12:16:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3479. [2018-07-24 12:16:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3479 states. [2018-07-24 12:16:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5308 transitions. [2018-07-24 12:16:44,322 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5308 transitions. Word has length 108 [2018-07-24 12:16:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:44,323 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5308 transitions. [2018-07-24 12:16:44,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:16:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5308 transitions. [2018-07-24 12:16:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-24 12:16:44,326 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:44,326 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:16:44,326 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 12:16:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash 180350415, now seen corresponding path program 1 times [2018-07-24 12:16:44,327 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:44,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:44,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:44,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:44,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 12:16:44,526 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:44,526 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 12:16:44,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:44,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:44,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:16:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:44,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:16:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:45,066 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:16:45,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 12:16:45,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:45,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:16:45,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:16:45,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:16:45,068 INFO L87 Difference]: Start difference. First operand 3479 states and 5308 transitions. Second operand 3 states. [2018-07-24 12:16:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:49,633 INFO L93 Difference]: Finished difference Result 7637 states and 11678 transitions. [2018-07-24 12:16:49,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:16:49,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2018-07-24 12:16:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:49,656 INFO L225 Difference]: With dead ends: 7637 [2018-07-24 12:16:49,656 INFO L226 Difference]: Without dead ends: 4164 [2018-07-24 12:16:49,674 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:16:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2018-07-24 12:16:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4164. [2018-07-24 12:16:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4164 states. [2018-07-24 12:16:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 6264 transitions. [2018-07-24 12:16:49,775 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 6264 transitions. Word has length 125 [2018-07-24 12:16:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:49,775 INFO L471 AbstractCegarLoop]: Abstraction has 4164 states and 6264 transitions. [2018-07-24 12:16:49,775 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:16:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 6264 transitions. [2018-07-24 12:16:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-24 12:16:49,778 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:49,778 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:16:49,778 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 12:16:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1124285342, now seen corresponding path program 1 times [2018-07-24 12:16:49,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:49,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:49,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:49,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:49,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:50,087 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:16:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:50,342 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:16:50,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:16:50,342 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:50,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:16:50,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:16:50,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:16:50,344 INFO L87 Difference]: Start difference. First operand 4164 states and 6264 transitions. Second operand 6 states. [2018-07-24 12:16:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:53,575 INFO L93 Difference]: Finished difference Result 9036 states and 13589 transitions. [2018-07-24 12:16:53,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:16:53,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-07-24 12:16:53,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:53,610 INFO L225 Difference]: With dead ends: 9036 [2018-07-24 12:16:53,610 INFO L226 Difference]: Without dead ends: 4878 [2018-07-24 12:16:53,625 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 12:16:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2018-07-24 12:16:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4861. [2018-07-24 12:16:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4861 states. [2018-07-24 12:16:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 6627 transitions. [2018-07-24 12:16:53,744 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 6627 transitions. Word has length 140 [2018-07-24 12:16:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:53,744 INFO L471 AbstractCegarLoop]: Abstraction has 4861 states and 6627 transitions. [2018-07-24 12:16:53,744 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:16:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 6627 transitions. [2018-07-24 12:16:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-24 12:16:53,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:53,749 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:16:53,749 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 12:16:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash -598555637, now seen corresponding path program 1 times [2018-07-24 12:16:53,750 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:53,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:53,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:53,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:53,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:16:54,056 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:16:54,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:16:54,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:16:54,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:16:54,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:16:54,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:16:54,058 INFO L87 Difference]: Start difference. First operand 4861 states and 6627 transitions. Second operand 4 states. [2018-07-24 12:16:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:59,998 INFO L93 Difference]: Finished difference Result 12445 states and 17145 transitions. [2018-07-24 12:17:00,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:17:00,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2018-07-24 12:17:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:17:00,037 INFO L225 Difference]: With dead ends: 12445 [2018-07-24 12:17:00,037 INFO L226 Difference]: Without dead ends: 7590 [2018-07-24 12:17:00,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:17:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2018-07-24 12:17:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 7590. [2018-07-24 12:17:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7590 states. [2018-07-24 12:17:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 9788 transitions. [2018-07-24 12:17:00,226 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 9788 transitions. Word has length 207 [2018-07-24 12:17:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:17:00,227 INFO L471 AbstractCegarLoop]: Abstraction has 7590 states and 9788 transitions. [2018-07-24 12:17:00,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:17:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 9788 transitions. [2018-07-24 12:17:00,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-24 12:17:00,237 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:17:00,237 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:17:00,237 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 12:17:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1450541705, now seen corresponding path program 1 times [2018-07-24 12:17:00,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:17:00,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:00,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:00,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:00,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:17:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:00,847 WARN L169 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:17:01,330 WARN L169 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-07-24 12:17:01,683 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-07-24 12:17:02,226 WARN L169 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-07-24 12:17:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 155 proven. 115 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 12:17:02,599 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:02,599 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 12:17:02,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:02,607 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:02,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:17:02,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:17:03,358 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:03,358 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:17:03,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:03,375 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:03,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:17:04,068 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 12:17:04,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:17:04,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 20 [2018-07-24 12:17:04,540 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:17:04,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:17:04,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:17:04,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:17:04,544 INFO L87 Difference]: Start difference. First operand 7590 states and 9788 transitions. Second operand 13 states. [2018-07-24 12:17:06,349 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-07-24 12:17:12,890 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-07-24 12:17:17,694 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-07-24 12:17:17,925 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-07-24 12:17:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:17:19,346 INFO L93 Difference]: Finished difference Result 19997 states and 26319 transitions. [2018-07-24 12:17:19,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-24 12:17:19,347 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 371 [2018-07-24 12:17:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:17:19,398 INFO L225 Difference]: With dead ends: 19997 [2018-07-24 12:17:19,399 INFO L226 Difference]: Without dead ends: 12413 [2018-07-24 12:17:19,435 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1501 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=597, Invalid=1953, Unknown=0, NotChecked=0, Total=2550 [2018-07-24 12:17:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12413 states. [2018-07-24 12:17:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12413 to 11671. [2018-07-24 12:17:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11671 states. [2018-07-24 12:17:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11671 states to 11671 states and 14545 transitions. [2018-07-24 12:17:19,684 INFO L78 Accepts]: Start accepts. Automaton has 11671 states and 14545 transitions. Word has length 371 [2018-07-24 12:17:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:17:19,684 INFO L471 AbstractCegarLoop]: Abstraction has 11671 states and 14545 transitions. [2018-07-24 12:17:19,684 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:17:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11671 states and 14545 transitions. [2018-07-24 12:17:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-24 12:17:19,701 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:17:19,701 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:17:19,702 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 12:17:19,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1693560466, now seen corresponding path program 1 times [2018-07-24 12:17:19,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:17:19,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:19,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:19,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:19,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:17:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:17:20,294 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:20,294 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:17:20,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:20,302 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:20,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:20,616 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:17:20,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:17:20,957 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:20,957 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:17:20,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:20,973 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:21,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:17:21,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:17:21,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:17:21,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:17:21,698 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:17:21,700 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:17:21,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:17:21,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:17:21,701 INFO L87 Difference]: Start difference. First operand 11671 states and 14545 transitions. Second operand 9 states. [2018-07-24 12:17:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:17:29,824 INFO L93 Difference]: Finished difference Result 25642 states and 32496 transitions. [2018-07-24 12:17:29,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:17:29,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 460 [2018-07-24 12:17:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:17:29,875 INFO L225 Difference]: With dead ends: 25642 [2018-07-24 12:17:29,875 INFO L226 Difference]: Without dead ends: 14027 [2018-07-24 12:17:29,903 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1856 GetRequests, 1837 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:17:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14027 states. [2018-07-24 12:17:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14027 to 14009. [2018-07-24 12:17:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14009 states. [2018-07-24 12:17:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 17114 transitions. [2018-07-24 12:17:30,156 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 17114 transitions. Word has length 460 [2018-07-24 12:17:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:17:30,158 INFO L471 AbstractCegarLoop]: Abstraction has 14009 states and 17114 transitions. [2018-07-24 12:17:30,159 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:17:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 17114 transitions. [2018-07-24 12:17:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-07-24 12:17:30,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:17:30,178 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:17:30,178 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 12:17:30,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2059936297, now seen corresponding path program 1 times [2018-07-24 12:17:30,179 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:17:30,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:30,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:30,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:30,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:17:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:30,563 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:17:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 49 proven. 191 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 12:17:31,440 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:31,440 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:17:31,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:31,448 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:31,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:31,917 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:32,653 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:17:32,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 12:17:32,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:17:32,654 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:17:32,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:17:32,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:17:32,654 INFO L87 Difference]: Start difference. First operand 14009 states and 17114 transitions. Second operand 3 states. [2018-07-24 12:17:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:17:34,741 INFO L93 Difference]: Finished difference Result 27962 states and 34160 transitions. [2018-07-24 12:17:34,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:17:34,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 461 [2018-07-24 12:17:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:17:34,794 INFO L225 Difference]: With dead ends: 27962 [2018-07-24 12:17:34,794 INFO L226 Difference]: Without dead ends: 14009 [2018-07-24 12:17:34,826 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 922 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:17:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2018-07-24 12:17:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 14003. [2018-07-24 12:17:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14003 states. [2018-07-24 12:17:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14003 states to 14003 states and 16413 transitions. [2018-07-24 12:17:35,071 INFO L78 Accepts]: Start accepts. Automaton has 14003 states and 16413 transitions. Word has length 461 [2018-07-24 12:17:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:17:35,072 INFO L471 AbstractCegarLoop]: Abstraction has 14003 states and 16413 transitions. [2018-07-24 12:17:35,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:17:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14003 states and 16413 transitions. [2018-07-24 12:17:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-07-24 12:17:35,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:17:35,105 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:35,106 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 12:17:35,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1079484985, now seen corresponding path program 1 times [2018-07-24 12:17:35,106 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:17:35,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:35,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:35,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:35,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:17:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:35,734 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:35,734 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 12:17:35,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:35,741 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:35,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:36,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:36,681 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:36,682 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 12:17:36,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:36,699 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:37,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:37,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:17:37,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:17:37,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 12:17:37,735 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:17:37,736 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:17:37,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:17:37,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:17:37,737 INFO L87 Difference]: Start difference. First operand 14003 states and 16413 transitions. Second operand 9 states. [2018-07-24 12:17:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:17:53,982 INFO L93 Difference]: Finished difference Result 34646 states and 43877 transitions. [2018-07-24 12:17:53,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-24 12:17:53,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 569 [2018-07-24 12:17:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:17:54,060 INFO L225 Difference]: With dead ends: 34646 [2018-07-24 12:17:54,060 INFO L226 Difference]: Without dead ends: 16174 [2018-07-24 12:17:54,335 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2352 GetRequests, 2296 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=2578, Unknown=0, NotChecked=0, Total=3192 [2018-07-24 12:17:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16174 states. [2018-07-24 12:17:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16174 to 15585. [2018-07-24 12:17:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15585 states. [2018-07-24 12:17:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15585 states to 15585 states and 16803 transitions. [2018-07-24 12:17:54,720 INFO L78 Accepts]: Start accepts. Automaton has 15585 states and 16803 transitions. Word has length 569 [2018-07-24 12:17:54,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:17:54,722 INFO L471 AbstractCegarLoop]: Abstraction has 15585 states and 16803 transitions. [2018-07-24 12:17:54,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:17:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 15585 states and 16803 transitions. [2018-07-24 12:17:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-07-24 12:17:54,770 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:17:54,771 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:17:54,772 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 12:17:54,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1238719471, now seen corresponding path program 1 times [2018-07-24 12:17:54,772 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:17:54,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:54,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:54,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:17:54,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:17:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:17:55,664 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:55,664 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 12:17:55,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:55,672 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:55,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:17:56,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:17:56,829 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:17:56,829 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 12:17:56,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:17:56,847 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:17:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:17:57,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:17:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:17:57,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:17:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:17:58,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:17:58,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:17:58,218 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:17:58,219 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:17:58,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:17:58,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:17:58,220 INFO L87 Difference]: Start difference. First operand 15585 states and 16803 transitions. Second operand 9 states. [2018-07-24 12:18:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:18:07,660 INFO L93 Difference]: Finished difference Result 29183 states and 31860 transitions. [2018-07-24 12:18:07,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 12:18:07,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 843 [2018-07-24 12:18:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:18:07,696 INFO L225 Difference]: With dead ends: 29183 [2018-07-24 12:18:07,696 INFO L226 Difference]: Without dead ends: 11182 [2018-07-24 12:18:07,730 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3433 GetRequests, 3387 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=452, Invalid=1618, Unknown=0, NotChecked=0, Total=2070 [2018-07-24 12:18:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2018-07-24 12:18:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 10276. [2018-07-24 12:18:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10276 states. [2018-07-24 12:18:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 10645 transitions. [2018-07-24 12:18:07,932 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 10645 transitions. Word has length 843 [2018-07-24 12:18:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:18:07,934 INFO L471 AbstractCegarLoop]: Abstraction has 10276 states and 10645 transitions. [2018-07-24 12:18:07,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:18:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 10645 transitions. [2018-07-24 12:18:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2018-07-24 12:18:07,970 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:18:07,971 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:18:07,971 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 12:18:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 577972533, now seen corresponding path program 1 times [2018-07-24 12:18:07,972 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:18:07,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:07,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:07,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:07,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:18:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2343 backedges. 573 proven. 486 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2018-07-24 12:18:11,510 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:18:11,510 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 12:18:11,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:11,518 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:18:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:11,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:18:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2343 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-07-24 12:18:13,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:18:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2343 backedges. 102 proven. 878 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-07-24 12:18:15,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:18:15,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 5] total 18 [2018-07-24 12:18:15,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:18:15,088 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:18:15,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:18:15,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:18:15,089 INFO L87 Difference]: Start difference. First operand 10276 states and 10645 transitions. Second operand 5 states. [2018-07-24 12:18:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:18:18,406 INFO L93 Difference]: Finished difference Result 22491 states and 23265 transitions. [2018-07-24 12:18:18,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:18:18,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1257 [2018-07-24 12:18:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:18:18,435 INFO L225 Difference]: With dead ends: 22491 [2018-07-24 12:18:18,436 INFO L226 Difference]: Without dead ends: 12226 [2018-07-24 12:18:18,449 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2529 GetRequests, 2510 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:18:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12226 states. [2018-07-24 12:18:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12226 to 10668. [2018-07-24 12:18:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10668 states. [2018-07-24 12:18:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 11032 transitions. [2018-07-24 12:18:18,612 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 11032 transitions. Word has length 1257 [2018-07-24 12:18:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:18:18,612 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 11032 transitions. [2018-07-24 12:18:18,613 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:18:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 11032 transitions. [2018-07-24 12:18:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1506 [2018-07-24 12:18:18,657 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:18:18,658 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:18,658 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 12:18:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -964521237, now seen corresponding path program 1 times [2018-07-24 12:18:18,659 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:18:18,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:18,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:18,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:18,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:18:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 851 proven. 486 refuted. 0 times theorem prover too weak. 2170 trivial. 0 not checked. [2018-07-24 12:18:23,885 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:18:23,885 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:18:23,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:23,893 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:18:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:24,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:18:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 2073 proven. 6 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-07-24 12:18:26,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:18:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 145 proven. 1999 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-07-24 12:18:30,919 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:18:30,919 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:18:30,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:30,934 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:18:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:31,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:18:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 1832 proven. 6 refuted. 0 times theorem prover too weak. 1669 trivial. 0 not checked. [2018-07-24 12:18:34,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:18:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 147 proven. 1997 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-07-24 12:18:41,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:18:41,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8, 7, 8] total 34 [2018-07-24 12:18:41,969 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:18:41,970 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 12:18:41,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 12:18:41,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2018-07-24 12:18:41,971 INFO L87 Difference]: Start difference. First operand 10668 states and 11032 transitions. Second operand 19 states. [2018-07-24 12:18:44,446 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-07-24 12:18:44,616 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-07-24 12:18:46,756 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-07-24 12:18:49,465 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-07-24 12:18:50,786 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-07-24 12:18:52,177 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-07-24 12:18:53,380 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-24 12:18:54,644 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-07-24 12:18:55,572 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-07-24 12:18:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:18:55,859 INFO L93 Difference]: Finished difference Result 22793 states and 23557 transitions. [2018-07-24 12:18:55,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 12:18:55,860 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1505 [2018-07-24 12:18:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:18:55,891 INFO L225 Difference]: With dead ends: 22793 [2018-07-24 12:18:55,892 INFO L226 Difference]: Without dead ends: 12809 [2018-07-24 12:18:55,907 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6090 GetRequests, 6021 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=771, Invalid=3651, Unknown=0, NotChecked=0, Total=4422 [2018-07-24 12:18:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12809 states. [2018-07-24 12:18:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12809 to 11072. [2018-07-24 12:18:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11072 states. [2018-07-24 12:18:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 11426 transitions. [2018-07-24 12:18:56,079 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 11426 transitions. Word has length 1505 [2018-07-24 12:18:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:18:56,080 INFO L471 AbstractCegarLoop]: Abstraction has 11072 states and 11426 transitions. [2018-07-24 12:18:56,080 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-24 12:18:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 11426 transitions. [2018-07-24 12:18:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1549 [2018-07-24 12:18:56,122 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:18:56,123 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-07-24 12:18:56,124 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 12:18:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 760231918, now seen corresponding path program 1 times [2018-07-24 12:18:56,125 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:18:56,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:56,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:56,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:18:56,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:18:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4726 backedges. 1182 proven. 215 refuted. 0 times theorem prover too weak. 3329 trivial. 0 not checked. [2018-07-24 12:18:59,150 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:18:59,151 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:18:59,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:18:59,159 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:18:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:18:59,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:19:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4726 backedges. 2168 proven. 2 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2018-07-24 12:19:01,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:19:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4726 backedges. 189 proven. 2072 refuted. 0 times theorem prover too weak. 2465 trivial. 0 not checked. [2018-07-24 12:19:04,014 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:19:04,015 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:19:04,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:04,036 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:19:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:19:05,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:19:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4726 backedges. 2347 proven. 26 refuted. 0 times theorem prover too weak. 2353 trivial. 0 not checked. [2018-07-24 12:19:06,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:19:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4726 backedges. 1182 proven. 215 refuted. 0 times theorem prover too weak. 3329 trivial. 0 not checked. [2018-07-24 12:19:09,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:19:09,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 6, 5] total 23 [2018-07-24 12:19:09,190 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:19:09,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:19:09,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:19:09,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:19:09,193 INFO L87 Difference]: Start difference. First operand 11072 states and 11426 transitions. Second operand 14 states. [2018-07-24 12:19:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:19:23,698 INFO L93 Difference]: Finished difference Result 22325 states and 23051 transitions. [2018-07-24 12:19:23,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 12:19:23,699 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1548 [2018-07-24 12:19:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:19:23,721 INFO L225 Difference]: With dead ends: 22325 [2018-07-24 12:19:23,721 INFO L226 Difference]: Without dead ends: 12277 [2018-07-24 12:19:23,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6258 GetRequests, 6202 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=485, Invalid=2377, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 12:19:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12277 states. [2018-07-24 12:19:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12277 to 11061. [2018-07-24 12:19:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11061 states. [2018-07-24 12:19:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11061 states to 11061 states and 11383 transitions. [2018-07-24 12:19:23,914 INFO L78 Accepts]: Start accepts. Automaton has 11061 states and 11383 transitions. Word has length 1548 [2018-07-24 12:19:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:19:23,914 INFO L471 AbstractCegarLoop]: Abstraction has 11061 states and 11383 transitions. [2018-07-24 12:19:23,915 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:19:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 11061 states and 11383 transitions. [2018-07-24 12:19:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2032 [2018-07-24 12:19:23,971 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:19:23,972 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 12:19:23,972 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:19:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1300743839, now seen corresponding path program 1 times [2018-07-24 12:19:23,973 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:19:23,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:23,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:23,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:23,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:19:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:19:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7011 backedges. 1030 proven. 901 refuted. 0 times theorem prover too weak. 5080 trivial. 0 not checked. [2018-07-24 12:19:28,225 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:19:28,226 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:19:28,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:28,237 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:19:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:19:28,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:19:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7011 backedges. 4755 proven. 2 refuted. 0 times theorem prover too weak. 2254 trivial. 0 not checked. [2018-07-24 12:19:30,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:19:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7011 backedges. 1030 proven. 901 refuted. 0 times theorem prover too weak. 5080 trivial. 0 not checked. [2018-07-24 12:19:35,547 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:19:35,547 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:19:35,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:35,570 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:19:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:19:37,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:19:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7011 backedges. 4753 proven. 30 refuted. 0 times theorem prover too weak. 2228 trivial. 0 not checked. [2018-07-24 12:19:38,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:19:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7011 backedges. 1030 proven. 901 refuted. 0 times theorem prover too weak. 5080 trivial. 0 not checked. [2018-07-24 12:19:44,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:19:44,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 7, 5] total 18 [2018-07-24 12:19:44,642 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:19:44,644 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:19:44,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:19:44,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:19:44,645 INFO L87 Difference]: Start difference. First operand 11061 states and 11383 transitions. Second operand 11 states. [2018-07-24 12:19:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:19:53,034 INFO L93 Difference]: Finished difference Result 21405 states and 22100 transitions. [2018-07-24 12:19:53,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-24 12:19:53,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2031 [2018-07-24 12:19:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:19:53,053 INFO L225 Difference]: With dead ends: 21405 [2018-07-24 12:19:53,053 INFO L226 Difference]: Without dead ends: 11368 [2018-07-24 12:19:53,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8165 GetRequests, 8128 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2018-07-24 12:19:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11368 states. [2018-07-24 12:19:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11368 to 11059. [2018-07-24 12:19:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11059 states. [2018-07-24 12:19:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 11374 transitions. [2018-07-24 12:19:53,247 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 11374 transitions. Word has length 2031 [2018-07-24 12:19:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:19:53,249 INFO L471 AbstractCegarLoop]: Abstraction has 11059 states and 11374 transitions. [2018-07-24 12:19:53,249 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:19:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 11374 transitions. [2018-07-24 12:19:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2018-07-24 12:19:53,309 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:19:53,310 INFO L353 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:19:53,310 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:19:53,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1645242929, now seen corresponding path program 1 times [2018-07-24 12:19:53,311 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:19:53,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:53,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:53,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:53,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:19:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8757 backedges. 2571 proven. 2234 refuted. 0 times theorem prover too weak. 3952 trivial. 0 not checked. [2018-07-24 12:20:00,564 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:00,564 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:20:00,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:00,572 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:01,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8757 backedges. 5390 proven. 2 refuted. 0 times theorem prover too weak. 3365 trivial. 0 not checked. [2018-07-24 12:20:02,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8757 backedges. 1533 proven. 630 refuted. 0 times theorem prover too weak. 6594 trivial. 0 not checked. [2018-07-24 12:20:06,412 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:06,413 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:20:06,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:06,429 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:07,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8757 backedges. 4941 proven. 2 refuted. 0 times theorem prover too weak. 3814 trivial. 0 not checked. [2018-07-24 12:20:10,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-07-24 12:20:10,327 WARN L177 SmtUtils]: Removed 1 from assertion stack [2018-07-24 12:20:10,328 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:20:10,530 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:20:10,530 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:20:10,535 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:20:10,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:20:10 BoogieIcfgContainer [2018-07-24 12:20:10,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:20:10,536 INFO L168 Benchmark]: Toolchain (without parser) took 234781.94 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,537 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 12:20:10,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1227.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,539 INFO L168 Benchmark]: Boogie Preprocessor took 476.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -977.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,540 INFO L168 Benchmark]: RCFGBuilder took 6235.17 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: 271.3 MB). Peak memory consumption was 271.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,540 INFO L168 Benchmark]: TraceAbstraction took 226679.64 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -519.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 12:20:10,545 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 1227.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 476.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -977.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6235.17 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: 271.3 MB). Peak memory consumption was 271.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226679.64 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -519.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was analyzing trace of length 2212 with TraceHistMax 12, while TraceCheckSpWp was constructing backward predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 226.6s OverallTime, 16 OverallIterations, 12 TraceHistogramMax, 124.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2556 SDtfs, 36715 SDslu, 3400 SDs, 0 SdLazy, 71289 SolverSat, 10448 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 97.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33464 GetRequests, 33064 SyntacticMatches, 34 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3896 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15585occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 7126 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 8.0s SatisfiabilityAnalysisTime, 60.2s InterpolantComputationTime, 26242 NumberOfCodeBlocks, 26242 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 42690 ConstructedInterpolants, 0 QuantifiedInterpolants, 252900374 SizeOfPredicates, 23 NumberOfNonLiveVariables, 22009 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 49 InterpolantComputations, 10 PerfectInterpolantSequences, 85135/96615 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/Problem16_label08_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-20-10-556.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label08_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-20-10-556.csv Completed graceful shutdown