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_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:21:48,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:21:48,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:21:48,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:21:48,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:21:48,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:21:48,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:21:48,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:21:48,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:21:48,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:21:48,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:21:48,934 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:21:48,935 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:21:48,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:21:48,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:21:48,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:21:48,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:21:48,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:21:48,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:21:48,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:21:48,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:21:48,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:21:48,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 20:21:48,962 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:21:48,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:21:48,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:21:48,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:21:48,966 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 20:21:48,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:21:48,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:21:48,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:21:48,995 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:21:48,995 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:21:48,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:21:48,996 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:21:48,996 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:21:48,997 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:21:48,997 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:21:48,997 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:21:48,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:21:48,998 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:21:48,998 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:21:48,998 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:21:48,999 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:21:48,999 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:21:48,999 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:21:48,999 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:21:49,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:21:49,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:21:49,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:21:49,001 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:21:49,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:21:49,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:21:49,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:21:49,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:21:49,002 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:21:49,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:21:49,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:21:49,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:21:49,003 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:21:49,003 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:21:49,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:21:49,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:21:49,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:21:49,098 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:21:49,099 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:21:49,099 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46_true-unreach-call_false-termination.c [2018-07-23 20:21:49,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384521e2a/9c3a3958e6e645c5ba6761d84b1ce0d9/FLAG9762d11e0 [2018-07-23 20:21:49,753 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:21:49,754 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46_true-unreach-call_false-termination.c [2018-07-23 20:21:49,782 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384521e2a/9c3a3958e6e645c5ba6761d84b1ce0d9/FLAG9762d11e0 [2018-07-23 20:21:49,800 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384521e2a/9c3a3958e6e645c5ba6761d84b1ce0d9 [2018-07-23 20:21:49,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:21:49,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:21:49,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:21:49,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:21:49,821 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:21:49,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:21:49" (1/1) ... [2018-07-23 20:21:49,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e225eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:49, skipping insertion in model container [2018-07-23 20:21:49,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:21:49" (1/1) ... [2018-07-23 20:21:50,063 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:21:50,362 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:21:50,383 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:21:50,524 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:21:50,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50 WrapperNode [2018-07-23 20:21:50,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:21:50,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:21:50,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:21:50,569 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:21:50,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:21:50,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:21:50,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:21:50,661 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:21:50,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (1/1) ... [2018-07-23 20:21:50,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:21:50,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:21:50,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:21:50,754 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:21:50,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (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 20:21:50,980 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 20:21:50,981 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 20:21:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:21:50,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:21:50,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:21:50,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:21:50,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:21:50,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:21:54,341 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:21:54,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:21:54 BoogieIcfgContainer [2018-07-23 20:21:54,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:21:54,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:21:54,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:21:54,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:21:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:21:49" (1/3) ... [2018-07-23 20:21:54,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ebec9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:21:54, skipping insertion in model container [2018-07-23 20:21:54,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:21:50" (2/3) ... [2018-07-23 20:21:54,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ebec9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:21:54, skipping insertion in model container [2018-07-23 20:21:54,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:21:54" (3/3) ... [2018-07-23 20:21:54,358 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label46_true-unreach-call_false-termination.c [2018-07-23 20:21:54,370 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:21:54,386 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:21:54,460 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:21:54,461 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:21:54,461 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:21:54,461 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:21:54,461 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:21:54,462 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:21:54,462 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:21:54,462 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:21:54,462 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:21:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:21:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 20:21:54,511 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:21:54,513 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] [2018-07-23 20:21:54,513 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 20:21:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1762360651, now seen corresponding path program 1 times [2018-07-23 20:21:54,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:21:54,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:54,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:21:54,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:54,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:21:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:21:55,186 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:21:55,320 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 20:21:55,323 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:21:55,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:21:55,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:21:55,335 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:21:55,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:21:55,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:21:55,357 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:21:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:21:57,204 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:21:57,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:21:57,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2018-07-23 20:21:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:21:57,228 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:21:57,229 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:21:57,235 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 20:21:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:21:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:21:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:21:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:21:57,344 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 119 [2018-07-23 20:21:57,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:21:57,346 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:21:57,346 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:21:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:21:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-23 20:21:57,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:21:57,363 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:21:57,364 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 20:21:57,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1830232884, now seen corresponding path program 1 times [2018-07-23 20:21:57,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:21:57,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:57,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:21:57,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:57,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:21:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:21:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:21:57,538 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:21:57,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:21:57,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:21:57,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:21:57,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:21:57,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:21:57,544 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:21:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:21:59,499 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:21:59,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:21:59,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-07-23 20:21:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:21:59,510 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:21:59,510 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:21:59,516 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:21:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:21:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:21:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:21:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:21:59,571 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 129 [2018-07-23 20:21:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:21:59,572 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:21:59,572 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:21:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:21:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-23 20:21:59,583 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:21:59,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:59,583 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 20:21:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash 902880317, now seen corresponding path program 1 times [2018-07-23 20:21:59,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:21:59,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:59,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:21:59,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:59,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:21:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:21:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:21:59,857 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:21:59,857 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:21:59,858 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-07-23 20:21:59,861 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [63], [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], [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], [587], [589], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:21:59,936 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:21:59,937 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:23:37,080 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:23:37,082 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 20:23:37,097 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:23:49,249 INFO L232 lantSequenceWeakener]: Weakened 138 states. On average, predicates are now at 80.38% of their original sizes. [2018-07-23 20:23:49,249 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:23:52,453 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:23:52,454 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:23:52,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:23:52,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:52,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:23:52,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:23:52,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:23:52,458 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 17 states. [2018-07-23 20:24:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:23,614 INFO L93 Difference]: Finished difference Result 1705 states and 2717 transitions. [2018-07-23 20:24:23,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:24:23,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 155 [2018-07-23 20:24:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:23,620 INFO L225 Difference]: With dead ends: 1705 [2018-07-23 20:24:23,620 INFO L226 Difference]: Without dead ends: 793 [2018-07-23 20:24:23,623 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:24:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-07-23 20:24:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-07-23 20:24:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-07-23 20:24:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1153 transitions. [2018-07-23 20:24:23,658 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1153 transitions. Word has length 155 [2018-07-23 20:24:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:23,658 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1153 transitions. [2018-07-23 20:24:23,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:24:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1153 transitions. [2018-07-23 20:24:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-23 20:24:23,663 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:23,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:23,664 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 20:24:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1515327736, now seen corresponding path program 1 times [2018-07-23 20:24:23,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:23,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:23,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:23,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:23,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 50 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:24:23,910 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:23,910 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:23,911 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-07-23 20:24:23,911 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [19], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [63], [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], [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], [587], [589], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:23,918 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:23,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:26:11,019 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:26:11,020 INFO L272 AbstractInterpreter]: Visited 124 different actions 191 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 20:26:11,026 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown