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/Problem17_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:58:46,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:58:46,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:58:46,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:58:46,783 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:58:46,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:58:46,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:58:46,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:58:46,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:58:46,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:58:46,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:58:46,794 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:58:46,795 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:58:46,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:58:46,800 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:58:46,801 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:58:46,802 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:58:46,806 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:58:46,817 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:58:46,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:58:46,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:58:46,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:58:46,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:58:46,827 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:58:46,827 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:58:46,828 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:58:46,829 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:58:46,830 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:58:46,831 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:58:46,833 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:58:46,834 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:58:46,834 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:58:46,835 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:58:46,835 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:58:46,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:58:46,839 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:58:46,839 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 19:58:46,871 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:58:46,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:58:46,872 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:58:46,873 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:58:46,873 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:58:46,873 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:58:46,874 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:58:46,874 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:58:46,874 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:58:46,874 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:58:46,875 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:58:46,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:58:46,875 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:58:46,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:58:46,876 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:58:46,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:58:46,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:58:46,877 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:58:46,878 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:58:46,878 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:58:46,878 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:58:46,879 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:58:46,879 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:58:46,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:58:46,879 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:58:46,879 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:58:46,880 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:58:46,880 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:58:46,880 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:58:46,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:58:46,881 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:58:46,881 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:58:46,881 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:58:46,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:58:46,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:58:46,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:58:46,972 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:58:46,973 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:58:46,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50_false-unreach-call.c [2018-07-23 19:58:47,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c46f3af/f3c2e7ed0d894ca49106a0c2bc5f3436/FLAG381cba65b [2018-07-23 19:58:47,775 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:58:47,778 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label50_false-unreach-call.c [2018-07-23 19:58:47,812 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c46f3af/f3c2e7ed0d894ca49106a0c2bc5f3436/FLAG381cba65b [2018-07-23 19:58:47,834 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c46f3af/f3c2e7ed0d894ca49106a0c2bc5f3436 [2018-07-23 19:58:47,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:58:47,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:58:47,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:58:47,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:58:47,861 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:58:47,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:58:47" (1/1) ... [2018-07-23 19:58:47,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cca5ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:47, skipping insertion in model container [2018-07-23 19:58:47,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:58:47" (1/1) ... [2018-07-23 19:58:48,204 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:58:48,983 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:58:48,998 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:58:49,469 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:58:49,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49 WrapperNode [2018-07-23 19:58:49,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:58:49,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:58:49,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:58:49,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:58:49,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:49,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:58:50,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:58:50,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:58:50,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:58:50,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (1/1) ... [2018-07-23 19:58:50,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:58:50,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:58:50,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:58:50,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:58:50,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (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 19:58:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:58:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:58:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:58:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:58:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:58:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:58:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:58:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:58:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:58:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:59:02,190 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:59:02,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:59:02 BoogieIcfgContainer [2018-07-23 19:59:02,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:59:02,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:59:02,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:59:02,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:59:02,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:58:47" (1/3) ... [2018-07-23 19:59:02,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10004f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:59:02, skipping insertion in model container [2018-07-23 19:59:02,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:58:49" (2/3) ... [2018-07-23 19:59:02,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10004f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:59:02, skipping insertion in model container [2018-07-23 19:59:02,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:59:02" (3/3) ... [2018-07-23 19:59:02,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label50_false-unreach-call.c [2018-07-23 19:59:02,215 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:59:02,225 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:59:02,290 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:59:02,291 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:59:02,291 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:59:02,291 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:59:02,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:59:02,292 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:59:02,292 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:59:02,292 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:59:02,292 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:59:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-23 19:59:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 19:59:02,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:59:02,335 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:59:02,336 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:59:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash 204189388, now seen corresponding path program 1 times [2018-07-23 19:59:02,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:59:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:02,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:59:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:02,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:59:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:59:02,639 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 19:59:02,642 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:59:02,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:59:02,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:59:02,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:59:02,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:59:02,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:59:02,661 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 3 states. [2018-07-23 19:59:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:59:11,310 INFO L93 Difference]: Finished difference Result 1701 states and 3102 transitions. [2018-07-23 19:59:11,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:59:11,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-07-23 19:59:11,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:59:11,341 INFO L225 Difference]: With dead ends: 1701 [2018-07-23 19:59:11,342 INFO L226 Difference]: Without dead ends: 1095 [2018-07-23 19:59:11,351 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:59:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-07-23 19:59:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1079. [2018-07-23 19:59:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2018-07-23 19:59:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1867 transitions. [2018-07-23 19:59:11,480 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1867 transitions. Word has length 16 [2018-07-23 19:59:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:59:11,481 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1867 transitions. [2018-07-23 19:59:11,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:59:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1867 transitions. [2018-07-23 19:59:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 19:59:11,487 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:59:11,487 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:59:11,487 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:59:11,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1579137982, now seen corresponding path program 1 times [2018-07-23 19:59:11,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:59:11,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:11,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:59:11,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:11,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:59:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:59:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:59:11,747 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:59:11,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:59:11,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:59:11,749 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:59:11,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:59:11,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:59:11,750 INFO L87 Difference]: Start difference. First operand 1079 states and 1867 transitions. Second operand 5 states. [2018-07-23 19:59:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:59:22,812 INFO L93 Difference]: Finished difference Result 3083 states and 5458 transitions. [2018-07-23 19:59:22,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:59:22,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-07-23 19:59:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:59:22,841 INFO L225 Difference]: With dead ends: 3083 [2018-07-23 19:59:22,842 INFO L226 Difference]: Without dead ends: 2010 [2018-07-23 19:59:22,848 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 19:59:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2018-07-23 19:59:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1988. [2018-07-23 19:59:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2018-07-23 19:59:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3238 transitions. [2018-07-23 19:59:22,941 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3238 transitions. Word has length 86 [2018-07-23 19:59:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:59:22,941 INFO L471 AbstractCegarLoop]: Abstraction has 1988 states and 3238 transitions. [2018-07-23 19:59:22,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:59:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3238 transitions. [2018-07-23 19:59:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 19:59:22,946 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:59:22,949 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:59:22,949 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:59:22,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1594338126, now seen corresponding path program 1 times [2018-07-23 19:59:22,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:59:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:22,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:59:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:22,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:59:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:59:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:59:23,312 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:59:23,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:59:23,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:59:23,313 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:59:23,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:59:23,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:59:23,315 INFO L87 Difference]: Start difference. First operand 1988 states and 3238 transitions. Second operand 6 states. [2018-07-23 19:59:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:59:29,910 INFO L93 Difference]: Finished difference Result 4890 states and 7920 transitions. [2018-07-23 19:59:29,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:59:29,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-07-23 19:59:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:59:29,928 INFO L225 Difference]: With dead ends: 4890 [2018-07-23 19:59:29,928 INFO L226 Difference]: Without dead ends: 2908 [2018-07-23 19:59:29,937 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:59:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2018-07-23 19:59:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2898. [2018-07-23 19:59:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2018-07-23 19:59:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3960 transitions. [2018-07-23 19:59:30,028 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3960 transitions. Word has length 92 [2018-07-23 19:59:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:59:30,029 INFO L471 AbstractCegarLoop]: Abstraction has 2898 states and 3960 transitions. [2018-07-23 19:59:30,029 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:59:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3960 transitions. [2018-07-23 19:59:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 19:59:30,035 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:59:30,038 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:59:30,039 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:59:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash 855916295, now seen corresponding path program 1 times [2018-07-23 19:59:30,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:59:30,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:30,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:59:30,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:30,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:59:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:59:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:59:30,211 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:59:30,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:59:30,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:59:30,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:59:30,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:59:30,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:59:30,213 INFO L87 Difference]: Start difference. First operand 2898 states and 3960 transitions. Second operand 4 states. [2018-07-23 19:59:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:59:36,737 INFO L93 Difference]: Finished difference Result 5790 states and 7934 transitions. [2018-07-23 19:59:36,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:59:36,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-07-23 19:59:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:59:36,761 INFO L225 Difference]: With dead ends: 5790 [2018-07-23 19:59:36,761 INFO L226 Difference]: Without dead ends: 2898 [2018-07-23 19:59:36,773 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:59:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2018-07-23 19:59:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2898. [2018-07-23 19:59:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2018-07-23 19:59:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3748 transitions. [2018-07-23 19:59:36,859 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3748 transitions. Word has length 126 [2018-07-23 19:59:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:59:36,860 INFO L471 AbstractCegarLoop]: Abstraction has 2898 states and 3748 transitions. [2018-07-23 19:59:36,860 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:59:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3748 transitions. [2018-07-23 19:59:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 19:59:36,863 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:59:36,863 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:59:36,863 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:59:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash -442194944, now seen corresponding path program 1 times [2018-07-23 19:59:36,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:59:36,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:36,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:59:36,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:59:36,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:59:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:59:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 23 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 19:59:37,270 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:59:37,270 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:59:37,271 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-07-23 19:59:37,273 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [762], [764], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1248], [1251], [1252], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1306], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-23 19:59:37,341 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:59:37,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:00:16,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 20:01:11,843 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:01:11,845 INFO L272 AbstractInterpreter]: Visited 96 different actions 186 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-23 20:01:11,858 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:01:46,250 INFO L232 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 75.06% of their original sizes. [2018-07-23 20:01:46,251 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:01:47,500 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:01:47,502 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:01:47,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-07-23 20:01:47,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:01:47,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 20:01:47,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 20:01:47,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 20:01:47,504 INFO L87 Difference]: Start difference. First operand 2898 states and 3748 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown