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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:20:14,804 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:20:14,806 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:20:14,827 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:20:14,828 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:20:14,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:20:14,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:20:14,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:20:14,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:20:14,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:20:14,850 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:20:14,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:20:14,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:20:14,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:20:14,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:20:14,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:20:14,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:20:14,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:20:14,872 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:20:14,877 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:20:14,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:20:14,883 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:20:14,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 20:20:14,900 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:20:14,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:20:14,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:20:14,925 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:20:14,925 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:20:14,926 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:20:14,926 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:20:14,926 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:20:14,926 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:20:14,927 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:20:14,927 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:20:14,927 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:20:14,928 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:20:14,929 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:20:14,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:20:14,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:20:14,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:20:14,930 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:20:14,931 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:20:14,931 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:20:14,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:20:14,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:20:14,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:20:14,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:20:14,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:20:14,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:20:14,934 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:20:14,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:20:14,934 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:20:14,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:20:14,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:20:14,935 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:20:14,935 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:20:14,935 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:20:15,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:20:15,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:20:15,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:20:15,063 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:20:15,064 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:20:15,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36_true-unreach-call_false-termination.c [2018-07-23 20:20:15,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9153123f1/c892fd07a08a48bda607bfdd660bdb54/FLAG15800948d [2018-07-23 20:20:15,753 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:20:15,754 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36_true-unreach-call_false-termination.c [2018-07-23 20:20:15,774 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9153123f1/c892fd07a08a48bda607bfdd660bdb54/FLAG15800948d [2018-07-23 20:20:15,794 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9153123f1/c892fd07a08a48bda607bfdd660bdb54 [2018-07-23 20:20:15,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:20:15,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:20:15,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:20:15,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:20:15,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:20:15,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:20:15" (1/1) ... [2018-07-23 20:20:15,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d1bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:15, skipping insertion in model container [2018-07-23 20:20:15,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:20:15" (1/1) ... [2018-07-23 20:20:16,034 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:20:16,312 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:20:16,332 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:20:16,524 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:20:16,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16 WrapperNode [2018-07-23 20:20:16,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:20:16,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:20:16,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:20:16,574 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:20:16,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:20:16,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:20:16,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:20:16,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:20:16,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (1/1) ... [2018-07-23 20:20:16,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:20:16,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:20:16,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:20:16,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:20:16,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (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 [2018-07-23 20:20:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:20:17,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:20:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:20:17,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:20:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:20:17,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:20:17,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:20:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:20:20,776 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:20:20,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:20:20 BoogieIcfgContainer [2018-07-23 20:20:20,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:20:20,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:20:20,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:20:20,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:20:20,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:20:15" (1/3) ... [2018-07-23 20:20:20,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6771892e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:20:20, skipping insertion in model container [2018-07-23 20:20:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:20:16" (2/3) ... [2018-07-23 20:20:20,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6771892e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:20:20, skipping insertion in model container [2018-07-23 20:20:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:20:20" (3/3) ... [2018-07-23 20:20:20,797 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label36_true-unreach-call_false-termination.c [2018-07-23 20:20:20,811 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:20:20,827 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:20:20,916 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:20:20,917 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:20:20,918 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:20:20,918 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:20:20,918 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:20:20,919 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:20:20,919 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:20:20,919 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:20:20,920 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:20:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:20:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 20:20:21,014 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:21,018 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:20:21,019 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1785677053, now seen corresponding path program 1 times [2018-07-23 20:20:21,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:21,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:21,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:21,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:21,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:21,773 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:20:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:21,940 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:21,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:20:21,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:21,950 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:20:21,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:20:21,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:21,976 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:20:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:23,488 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:20:23,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:20:23,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2018-07-23 20:20:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:23,511 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:20:23,512 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:20:23,521 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:20:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:20:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:20:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-07-23 20:20:23,615 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 109 [2018-07-23 20:20:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:23,617 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-07-23 20:20:23,617 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:20:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-07-23 20:20:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 20:20:23,625 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:23,625 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:20:23,625 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash -345976890, now seen corresponding path program 1 times [2018-07-23 20:20:23,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:23,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:23,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:23,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:23,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:23,858 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:23,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:20:23,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:23,862 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:20:23,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:20:23,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:20:23,863 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-07-23 20:20:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:26,025 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-07-23 20:20:26,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:20:26,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-07-23 20:20:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:26,038 INFO L225 Difference]: With dead ends: 1075 [2018-07-23 20:20:26,038 INFO L226 Difference]: Without dead ends: 741 [2018-07-23 20:20:26,043 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 [2018-07-23 20:20:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-07-23 20:20:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-07-23 20:20:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-07-23 20:20:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-07-23 20:20:26,107 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 120 [2018-07-23 20:20:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:26,107 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-07-23 20:20:26,108 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:20:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-07-23 20:20:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 20:20:26,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:26,114 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:20:26,114 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1611894384, now seen corresponding path program 1 times [2018-07-23 20:20:26,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:26,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:26,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:26,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:26,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:26,748 WARN L169 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-23 20:20:27,027 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-23 20:20:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:27,155 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:27,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:20:27,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:27,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:20:27,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:20:27,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:20:27,158 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 5 states. [2018-07-23 20:20:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:29,662 INFO L93 Difference]: Finished difference Result 1578 states and 2533 transitions. [2018-07-23 20:20:29,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:20:29,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-07-23 20:20:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:29,670 INFO L225 Difference]: With dead ends: 1578 [2018-07-23 20:20:29,671 INFO L226 Difference]: Without dead ends: 721 [2018-07-23 20:20:29,675 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:20:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-07-23 20:20:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-07-23 20:20:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-07-23 20:20:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1069 transitions. [2018-07-23 20:20:29,737 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1069 transitions. Word has length 121 [2018-07-23 20:20:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:29,738 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1069 transitions. [2018-07-23 20:20:29,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:20:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1069 transitions. [2018-07-23 20:20:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 20:20:29,745 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:29,745 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:20:29,747 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2107359222, now seen corresponding path program 1 times [2018-07-23 20:20:29,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:29,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:29,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:29,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:29,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:30,745 WARN L169 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-07-23 20:20:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:31,216 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:31,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:20:31,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:31,218 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:20:31,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:20:31,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:20:31,219 INFO L87 Difference]: Start difference. First operand 721 states and 1069 transitions. Second operand 5 states. [2018-07-23 20:20:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:32,566 INFO L93 Difference]: Finished difference Result 1572 states and 2365 transitions. [2018-07-23 20:20:32,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:20:32,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-07-23 20:20:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:32,575 INFO L225 Difference]: With dead ends: 1572 [2018-07-23 20:20:32,575 INFO L226 Difference]: Without dead ends: 720 [2018-07-23 20:20:32,580 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:20:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-07-23 20:20:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2018-07-23 20:20:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2018-07-23 20:20:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1062 transitions. [2018-07-23 20:20:32,617 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1062 transitions. Word has length 122 [2018-07-23 20:20:32,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:32,618 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1062 transitions. [2018-07-23 20:20:32,618 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:20:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1062 transitions. [2018-07-23 20:20:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 20:20:32,621 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:32,621 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:20:32,622 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907000, now seen corresponding path program 1 times [2018-07-23 20:20:32,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:32,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:32,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:32,829 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:32,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:20:32,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:32,831 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:20:32,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:20:32,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:32,832 INFO L87 Difference]: Start difference. First operand 720 states and 1062 transitions. Second operand 3 states. [2018-07-23 20:20:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:33,605 INFO L93 Difference]: Finished difference Result 2057 states and 3124 transitions. [2018-07-23 20:20:33,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:20:33,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2018-07-23 20:20:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:33,615 INFO L225 Difference]: With dead ends: 2057 [2018-07-23 20:20:33,616 INFO L226 Difference]: Without dead ends: 1343 [2018-07-23 20:20:33,622 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2018-07-23 20:20:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1342. [2018-07-23 20:20:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2018-07-23 20:20:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1885 transitions. [2018-07-23 20:20:33,671 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1885 transitions. Word has length 125 [2018-07-23 20:20:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:33,672 INFO L471 AbstractCegarLoop]: Abstraction has 1342 states and 1885 transitions. [2018-07-23 20:20:33,672 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:20:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1885 transitions. [2018-07-23 20:20:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-23 20:20:33,680 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:33,680 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 20:20:33,680 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash -31065596, now seen corresponding path program 1 times [2018-07-23 20:20:33,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:33,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:33,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:33,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:33,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:34,006 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:20:34,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:20:34,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:34,007 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:20:34,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:20:34,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:34,008 INFO L87 Difference]: Start difference. First operand 1342 states and 1885 transitions. Second operand 3 states. [2018-07-23 20:20:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:20:35,217 INFO L93 Difference]: Finished difference Result 3918 states and 5652 transitions. [2018-07-23 20:20:35,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:20:35,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2018-07-23 20:20:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:20:35,239 INFO L225 Difference]: With dead ends: 3918 [2018-07-23 20:20:35,239 INFO L226 Difference]: Without dead ends: 2582 [2018-07-23 20:20:35,251 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:20:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2018-07-23 20:20:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2582. [2018-07-23 20:20:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2018-07-23 20:20:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3510 transitions. [2018-07-23 20:20:35,336 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3510 transitions. Word has length 163 [2018-07-23 20:20:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:20:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 2582 states and 3510 transitions. [2018-07-23 20:20:35,338 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:20:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3510 transitions. [2018-07-23 20:20:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 20:20:35,348 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:20:35,348 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:20:35,348 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:20:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash 97239981, now seen corresponding path program 1 times [2018-07-23 20:20:35,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:20:35,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:35,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:20:35,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:20:35,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:20:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:20:35,828 WARN L169 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-07-23 20:20:36,087 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-23 20:20:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:20:36,870 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:20:36,870 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:20:36,872 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-07-23 20:20:36,875 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [259], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [507], [509], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:20:36,954 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:20:36,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:21:01,516 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:21:01,518 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:21:01,530 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:21:07,058 INFO L232 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 79.87% of their original sizes. [2018-07-23 20:21:07,058 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:21:08,503 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:21:08,505 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:21:08,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2018-07-23 20:21:08,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:21:08,506 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:21:08,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:21:08,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:21:08,507 INFO L87 Difference]: Start difference. First operand 2582 states and 3510 transitions. Second operand 12 states. [2018-07-23 20:21:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:21:27,916 INFO L93 Difference]: Finished difference Result 5219 states and 7108 transitions. [2018-07-23 20:21:27,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:21:27,916 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 198 [2018-07-23 20:21:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:21:27,936 INFO L225 Difference]: With dead ends: 5219 [2018-07-23 20:21:27,937 INFO L226 Difference]: Without dead ends: 2643 [2018-07-23 20:21:27,949 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:21:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2018-07-23 20:21:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2643. [2018-07-23 20:21:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2018-07-23 20:21:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3576 transitions. [2018-07-23 20:21:28,039 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3576 transitions. Word has length 198 [2018-07-23 20:21:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:21:28,039 INFO L471 AbstractCegarLoop]: Abstraction has 2643 states and 3576 transitions. [2018-07-23 20:21:28,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:21:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3576 transitions. [2018-07-23 20:21:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-23 20:21:28,051 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:21:28,051 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:21:28,052 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:21:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash -833055730, now seen corresponding path program 1 times [2018-07-23 20:21:28,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:21:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:28,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:21:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:28,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:21:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:21:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 101 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 20:21:28,408 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:21:28,408 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:21:28,408 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-07-23 20:21:28,409 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [259], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [507], [509], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:21:28,416 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:21:28,416 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:23:22,258 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:23:22,258 INFO L272 AbstractInterpreter]: Visited 114 different actions 180 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:23:22,270 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:23:39,241 INFO L232 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 80.35% of their original sizes. [2018-07-23 20:23:39,242 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:23:42,551 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:23:42,551 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:23:42,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-07-23 20:23:42,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:42,552 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 20:23:42,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 20:23:42,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-07-23 20:23:42,553 INFO L87 Difference]: Start difference. First operand 2643 states and 3576 transitions. Second operand 19 states. [2018-07-23 20:24:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:14,106 INFO L93 Difference]: Finished difference Result 5364 states and 7284 transitions. [2018-07-23 20:24:14,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 20:24:14,106 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2018-07-23 20:24:14,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:14,120 INFO L225 Difference]: With dead ends: 5364 [2018-07-23 20:24:14,120 INFO L226 Difference]: Without dead ends: 2788 [2018-07-23 20:24:14,131 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 20:24:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2018-07-23 20:24:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2781. [2018-07-23 20:24:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2018-07-23 20:24:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3718 transitions. [2018-07-23 20:24:14,214 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3718 transitions. Word has length 207 [2018-07-23 20:24:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:14,215 INFO L471 AbstractCegarLoop]: Abstraction has 2781 states and 3718 transitions. [2018-07-23 20:24:14,215 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 20:24:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3718 transitions. [2018-07-23 20:24:14,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 20:24:14,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:14,227 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 20:24:14,227 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:24:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash 203004516, now seen corresponding path program 1 times [2018-07-23 20:24:14,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:14,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:14,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:14,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:14,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 20:24:14,418 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:14,418 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:14,419 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-07-23 20:24:14,419 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [135], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [259], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [507], [509], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:14,424 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:14,425 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:24:26,742 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:24:26,743 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:24:26,745 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:24:26,745 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:26,745 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 [2018-07-23 20:24:26,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:26,757 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:24:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:26,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:24:27,000 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:24:27,201 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:24:27,202 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:24:27,210 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:24:27,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:24:27 BoogieIcfgContainer [2018-07-23 20:24:27,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:24:27,217 INFO L168 Benchmark]: Toolchain (without parser) took 251402.59 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -53.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-23 20:24:27,219 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:24:27,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.53 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:24:27,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.20 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 20:24:27,223 INFO L168 Benchmark]: Boogie Preprocessor took 113.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:24:27,223 INFO L168 Benchmark]: RCFGBuilder took 3975.54 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.0 GB in the end (delta: -705.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-07-23 20:24:27,224 INFO L168 Benchmark]: TraceAbstraction took 246428.55 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 609.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-23 20:24:27,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.53 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 112.20 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3975.54 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.0 GB in the end (delta: -705.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246428.55 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 609.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 482]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 482). Cancelled while BasicCegarLoop was analyzing trace of length 241 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 246.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 60.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1384 SDtfs, 3109 SDslu, 956 SDs, 0 SdLazy, 4743 SolverSat, 868 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 468 GetRequests, 394 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2781occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 150.8s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9955487732828416 AbsIntWeakeningRatio, 0.18858560794044665 AbsIntAvgWeakeningVarsNumRemoved, 1108.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1165 NumberOfCodeBlocks, 1165 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1157 ConstructedInterpolants, 0 QuantifiedInterpolants, 1784355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 221/313 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/Problem01_label36_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-24-27-264.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label36_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-24-27-264.csv Completed graceful shutdown