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_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:23:16,921 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:23:16,925 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:23:16,940 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:23:16,940 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:23:16,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:23:16,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:23:16,945 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:23:16,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:23:16,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:23:16,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:23:16,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:23:16,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:23:16,951 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:23:16,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:23:16,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:23:16,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:23:16,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:23:16,958 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:23:16,960 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:23:16,961 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:23:16,962 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:23:16,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 20:23:16,981 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 20:23:17,011 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:23:17,012 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:23:17,013 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:23:17,013 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:23:17,013 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:23:17,014 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:23:17,014 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:23:17,014 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:23:17,014 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:23:17,015 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:23:17,015 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:23:17,016 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:23:17,016 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:23:17,016 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:23:17,016 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:23:17,016 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:23:17,017 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:23:17,017 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:23:17,017 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:23:17,017 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:23:17,017 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:23:17,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:23:17,018 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:23:17,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:23:17,018 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:23:17,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:23:17,019 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:23:17,019 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:23:17,019 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:23:17,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:23:17,020 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:23:17,020 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:23:17,020 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:23:17,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:23:17,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:23:17,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:23:17,095 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:23:17,096 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:23:17,097 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53_true-unreach-call_false-termination.c [2018-07-23 20:23:17,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa7d6ce/c3ff1921ddd044a4be548a4f7655147c/FLAG31d7a7f00 [2018-07-23 20:23:17,840 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:23:17,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label53_true-unreach-call_false-termination.c [2018-07-23 20:23:17,875 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa7d6ce/c3ff1921ddd044a4be548a4f7655147c/FLAG31d7a7f00 [2018-07-23 20:23:17,904 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa7d6ce/c3ff1921ddd044a4be548a4f7655147c [2018-07-23 20:23:17,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:23:17,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:23:17,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:17,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:23:17,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:23:17,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:17" (1/1) ... [2018-07-23 20:23:17,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd04cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:17, skipping insertion in model container [2018-07-23 20:23:17,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:17" (1/1) ... [2018-07-23 20:23:18,172 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:23:18,479 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:18,505 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:23:18,666 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:18,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18 WrapperNode [2018-07-23 20:23:18,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:18,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:18,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:23:18,723 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:23:18,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:18,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:23:18,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:23:18,826 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:23:18,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:18,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:19,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:19,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (1/1) ... [2018-07-23 20:23:19,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:23:19,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:23:19,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:23:19,124 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:23:19,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (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 20:23:19,218 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 20:23:19,219 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 20:23:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:23:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:23:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:23:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:23:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:23:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:23:22,764 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:23:22,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:22 BoogieIcfgContainer [2018-07-23 20:23:22,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:23:22,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:23:22,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:23:22,770 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:23:22,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:23:17" (1/3) ... [2018-07-23 20:23:22,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ec8063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:22, skipping insertion in model container [2018-07-23 20:23:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:18" (2/3) ... [2018-07-23 20:23:22,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ec8063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:22, skipping insertion in model container [2018-07-23 20:23:22,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:22" (3/3) ... [2018-07-23 20:23:22,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label53_true-unreach-call_false-termination.c [2018-07-23 20:23:22,801 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:23:22,816 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:23:22,896 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:23:22,897 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:23:22,897 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:23:22,898 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:23:22,898 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:23:22,898 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:23:22,898 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:23:22,899 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:23:22,899 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:23:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:23:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 20:23:22,972 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:22,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:23:22,976 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 20:23:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1411619059, now seen corresponding path program 1 times [2018-07-23 20:23:22,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:23,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:23,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:23,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:23,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:23,759 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:23,914 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 20:23:23,917 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:23,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:23:23,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:23,925 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:23:23,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:23:23,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:23:23,946 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:23:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:25,402 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:23:25,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:23:25,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2018-07-23 20:23:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:25,428 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:23:25,428 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:23:25,435 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 [2018-07-23 20:23:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:23:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:23:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:23:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 571 transitions. [2018-07-23 20:23:25,523 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 571 transitions. Word has length 121 [2018-07-23 20:23:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:25,524 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 571 transitions. [2018-07-23 20:23:25,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:23:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 571 transitions. [2018-07-23 20:23:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 20:23:25,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:25,534 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:23:25,534 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 20:23:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 729811372, now seen corresponding path program 1 times [2018-07-23 20:23:25,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:25,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:25,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:25,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:25,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:25,968 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:25,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:23:25,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:25,971 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:23:25,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:23:25,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:23:25,972 INFO L87 Difference]: Start difference. First operand 340 states and 571 transitions. Second operand 3 states. [2018-07-23 20:23:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:27,095 INFO L93 Difference]: Finished difference Result 946 states and 1655 transitions. [2018-07-23 20:23:27,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:23:27,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-07-23 20:23:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:27,105 INFO L225 Difference]: With dead ends: 946 [2018-07-23 20:23:27,105 INFO L226 Difference]: Without dead ends: 612 [2018-07-23 20:23:27,109 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 20:23:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-07-23 20:23:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2018-07-23 20:23:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2018-07-23 20:23:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 985 transitions. [2018-07-23 20:23:27,168 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 985 transitions. Word has length 139 [2018-07-23 20:23:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:27,169 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 985 transitions. [2018-07-23 20:23:27,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:23:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 985 transitions. [2018-07-23 20:23:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 20:23:27,176 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:27,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:27,177 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 20:23:27,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2000851014, now seen corresponding path program 1 times [2018-07-23 20:23:27,178 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:27,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:27,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:27,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:27,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:27,477 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:27,794 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:27,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:23:27,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:27,795 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:23:27,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:23:27,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:23:27,796 INFO L87 Difference]: Start difference. First operand 612 states and 985 transitions. Second operand 6 states. [2018-07-23 20:23:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:30,098 INFO L93 Difference]: Finished difference Result 1627 states and 2643 transitions. [2018-07-23 20:23:30,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:23:30,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-07-23 20:23:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:30,108 INFO L225 Difference]: With dead ends: 1627 [2018-07-23 20:23:30,109 INFO L226 Difference]: Without dead ends: 1021 [2018-07-23 20:23:30,112 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:23:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2018-07-23 20:23:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1011. [2018-07-23 20:23:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2018-07-23 20:23:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1469 transitions. [2018-07-23 20:23:30,173 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1469 transitions. Word has length 166 [2018-07-23 20:23:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:30,173 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1469 transitions. [2018-07-23 20:23:30,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:23:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1469 transitions. [2018-07-23 20:23:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-23 20:23:30,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:30,181 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:30,181 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 20:23:30,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2069133399, now seen corresponding path program 1 times [2018-07-23 20:23:30,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:30,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:30,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:30,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:30,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:30,430 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 20:23:30,806 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:23:30,806 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:23:30,808 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-07-23 20:23:30,811 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [11], [12], [16], [20], [24], [28], [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], [147], [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], [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], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [603], [605], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:23:30,897 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:23:30,897 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:23:50,268 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:23:50,270 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:23:50,280 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:23:54,342 INFO L232 lantSequenceWeakener]: Weakened 116 states. On average, predicates are now at 79.84% of their original sizes. [2018-07-23 20:23:54,342 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:23:55,635 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:23:55,636 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:23:55,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-07-23 20:23:55,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:55,638 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:23:55,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:23:55,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:23:55,639 INFO L87 Difference]: Start difference. First operand 1011 states and 1469 transitions. Second operand 12 states. [2018-07-23 20:24:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:15,059 INFO L93 Difference]: Finished difference Result 2077 states and 3043 transitions. [2018-07-23 20:24:15,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:24:15,059 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2018-07-23 20:24:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:15,067 INFO L225 Difference]: With dead ends: 2077 [2018-07-23 20:24:15,067 INFO L226 Difference]: Without dead ends: 1072 [2018-07-23 20:24:15,072 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:24:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2018-07-23 20:24:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2018-07-23 20:24:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2018-07-23 20:24:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1538 transitions. [2018-07-23 20:24:15,114 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1538 transitions. Word has length 177 [2018-07-23 20:24:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:15,114 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1538 transitions. [2018-07-23 20:24:15,114 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:24:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1538 transitions. [2018-07-23 20:24:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 20:24:15,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:15,121 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:15,121 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 20:24:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 662492397, now seen corresponding path program 1 times [2018-07-23 20:24:15,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:15,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:15,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:15,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:15,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:24:15,665 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:15,665 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:15,666 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2018-07-23 20:24:15,666 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [16], [20], [24], [28], [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], [147], [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], [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], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [603], [605], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:15,675 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:15,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:25:59,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:25:59,032 INFO L272 AbstractInterpreter]: Visited 108 different actions 173 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:25:59,046 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:26:12,363 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 80.33% of their original sizes. [2018-07-23 20:26:12,364 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:26:15,144 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:26:15,145 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:26:15,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:26:15,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:26:15,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:26:15,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:26:15,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:26:15,147 INFO L87 Difference]: Start difference. First operand 1072 states and 1538 transitions. Second operand 17 states. [2018-07-23 20:26:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:26:51,171 INFO L93 Difference]: Finished difference Result 2261 states and 3313 transitions. [2018-07-23 20:26:51,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:26:51,171 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 178 [2018-07-23 20:26:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:26:51,178 INFO L225 Difference]: With dead ends: 2261 [2018-07-23 20:26:51,178 INFO L226 Difference]: Without dead ends: 1071 [2018-07-23 20:26:51,183 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:26:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2018-07-23 20:26:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2018-07-23 20:26:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2018-07-23 20:26:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1441 transitions. [2018-07-23 20:26:51,219 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1441 transitions. Word has length 178 [2018-07-23 20:26:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:26:51,219 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1441 transitions. [2018-07-23 20:26:51,220 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:26:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1441 transitions. [2018-07-23 20:26:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 20:26:51,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:26:51,226 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:51,226 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 20:26:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash -402358830, now seen corresponding path program 1 times [2018-07-23 20:26:51,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:26:51,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:26:51,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:26:51,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:26:51,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:26:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:26:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 20:26:51,465 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:26:51,465 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:26:51,465 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-07-23 20:26:51,466 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [19], [20], [24], [28], [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], [147], [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], [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], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [603], [605], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:26:51,472 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:26:51,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:27:31,990 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:27:31,992 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:27:31,993 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:27:31,993 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:27:31,993 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 20:27:32,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:27:32,014 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:27:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:27:32,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:27:32,196 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:27:32,397 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:27:32,398 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:27:32,412 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:27:32,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:27:32 BoogieIcfgContainer [2018-07-23 20:27:32,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:27:32,414 INFO L168 Benchmark]: Toolchain (without parser) took 254495.14 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 384.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:32,417 INFO L168 Benchmark]: CDTParser took 0.26 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 20:27:32,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.71 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:32,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.60 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 20:27:32,423 INFO L168 Benchmark]: Boogie Preprocessor took 296.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 722.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -819.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:32,424 INFO L168 Benchmark]: RCFGBuilder took 3642.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 112.8 MB). Peak memory consumption was 112.8 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:32,425 INFO L168 Benchmark]: TraceAbstraction took 249646.14 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -838.4 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:32,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 799.71 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.60 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 296.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 722.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -819.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3642.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 112.8 MB). Peak memory consumption was 112.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249646.14 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -838.4 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 518]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 518). Cancelled while BasicCegarLoop was analyzing trace of length 189 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, 249.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 60.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1054 SDtfs, 2316 SDslu, 918 SDs, 0 SdLazy, 3413 SolverSat, 743 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 395 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1072occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 163.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9952588234907043 AbsIntWeakeningRatio, 0.19830028328611898 AbsIntAvgWeakeningVarsNumRemoved, 1055.0509915014163 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 781 NumberOfCodeBlocks, 781 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 776 ConstructedInterpolants, 0 QuantifiedInterpolants, 310503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 173/181 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_label53_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-27-32-456.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label53_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-27-32-456.csv Completed graceful shutdown