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_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:02:17,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:02:17,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:02:17,650 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:02:17,650 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:02:17,651 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:02:17,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:02:17,657 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:02:17,659 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:02:17,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:02:17,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:02:17,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:02:17,662 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:02:17,663 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:02:17,664 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:02:17,664 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:02:17,665 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:02:17,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:02:17,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:02:17,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:02:17,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:02:17,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:02:17,676 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 23:02:17,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 23:02:17,686 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 23:02:17,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 23:02:17,690 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 23:02:17,690 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 23:02:17,720 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:02:17,721 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:02:17,721 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:02:17,722 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 23:02:17,722 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 23:02:17,722 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 23:02:17,723 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 23:02:17,723 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 23:02:17,723 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 23:02:17,724 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 23:02:17,724 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 23:02:17,725 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:02:17,725 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:02:17,726 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:02:17,726 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:02:17,726 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:02:17,726 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:02:17,726 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:02:17,727 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:02:17,727 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:02:17,727 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:02:17,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:02:17,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:02:17,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:02:17,729 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:02:17,730 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:02:17,731 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:02:17,731 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 23:02:17,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:02:17,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:02:17,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:02:17,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:02:17,820 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:02:17,821 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-07-23 23:02:18,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6849223d4/d5bb38cc6b7a481c9c007adeda76d79a/FLAGe836c9471 [2018-07-23 23:02:18,563 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:02:18,564 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-07-23 23:02:18,589 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6849223d4/d5bb38cc6b7a481c9c007adeda76d79a/FLAGe836c9471 [2018-07-23 23:02:18,610 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6849223d4/d5bb38cc6b7a481c9c007adeda76d79a [2018-07-23 23:02:18,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:02:18,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:02:18,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:02:18,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:02:18,634 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:02:18,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:02:18" (1/1) ... [2018-07-23 23:02:18,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212fe84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:18, skipping insertion in model container [2018-07-23 23:02:18,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:02:18" (1/1) ... [2018-07-23 23:02:18,900 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:02:19,615 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:02:19,632 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:02:20,081 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:02:20,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20 WrapperNode [2018-07-23 23:02:20,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:02:20,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:02:20,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:02:20,282 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:02:20,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:20,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:20,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:02:20,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:02:20,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:02:20,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:02:21,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (1/1) ... [2018-07-23 23:02:21,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:02:21,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:02:21,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:02:21,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:02:21,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (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 23:02:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 23:02:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 23:02:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 23:02:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 23:02:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:02:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:02:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 23:02:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 23:02:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-23 23:02:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-23 23:02:32,680 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:02:32,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:02:32 BoogieIcfgContainer [2018-07-23 23:02:32,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:02:32,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:02:32,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:02:32,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:02:32,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:02:18" (1/3) ... [2018-07-23 23:02:32,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:02:32, skipping insertion in model container [2018-07-23 23:02:32,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:02:20" (2/3) ... [2018-07-23 23:02:32,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:02:32, skipping insertion in model container [2018-07-23 23:02:32,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:02:32" (3/3) ... [2018-07-23 23:02:32,690 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label42_true-unreach-call.c [2018-07-23 23:02:32,699 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:02:32,708 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:02:32,768 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:02:32,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:02:32,769 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:02:32,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:02:32,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:02:32,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:02:32,770 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:02:32,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:02:32,770 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:02:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-23 23:02:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-23 23:02:32,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:02:32,819 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] [2018-07-23 23:02:32,819 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:02:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash -148669743, now seen corresponding path program 1 times [2018-07-23 23:02:32,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:02:32,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:32,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:02:32,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:32,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:02:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:02:33,381 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 23:02:33,384 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:02:33,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:02:33,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:02:33,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:02:33,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:02:33,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:02:33,410 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-23 23:02:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:02:44,461 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-07-23 23:02:44,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:02:44,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-07-23 23:02:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:02:44,493 INFO L225 Difference]: With dead ends: 2125 [2018-07-23 23:02:44,493 INFO L226 Difference]: Without dead ends: 1515 [2018-07-23 23:02:44,504 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:02:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-07-23 23:02:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-07-23 23:02:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-07-23 23:02:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-07-23 23:02:44,667 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 47 [2018-07-23 23:02:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:02:44,668 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-07-23 23:02:44,668 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:02:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-07-23 23:02:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 23:02:44,679 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:02:44,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:44,681 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:02:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash -788659486, now seen corresponding path program 1 times [2018-07-23 23:02:44,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:02:44,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:44,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:02:44,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:44,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:02:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:02:45,080 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 23:02:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:02:45,167 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:02:45,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 23:02:45,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:02:45,170 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 23:02:45,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 23:02:45,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 23:02:45,171 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-07-23 23:02:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:02:56,485 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-07-23 23:02:56,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:02:56,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-07-23 23:02:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:02:56,507 INFO L225 Difference]: With dead ends: 3017 [2018-07-23 23:02:56,507 INFO L226 Difference]: Without dead ends: 1980 [2018-07-23 23:02:56,512 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 23:02:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-07-23 23:02:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-07-23 23:02:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-07-23 23:02:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-07-23 23:02:56,582 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 119 [2018-07-23 23:02:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:02:56,583 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-07-23 23:02:56,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 23:02:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-07-23 23:02:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 23:02:56,593 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:02:56,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:56,597 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:02:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash 175900161, now seen corresponding path program 1 times [2018-07-23 23:02:56,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:02:56,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:56,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:02:56,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:02:56,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:02:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:02:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:02:57,087 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:02:57,088 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 23:02:57,088 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 123 with the following transitions: [2018-07-23 23:02:57,091 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [1570], [1574], [1578], [1584], [1588], [1590], [2306], [2307], [2308], [2310], [2311] [2018-07-23 23:02:57,168 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 23:02:57,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 23:03:27,523 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 23:04:05,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 23:04:05,156 INFO L272 AbstractInterpreter]: Visited 82 different actions 233 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-23 23:04:05,175 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 23:04:07,404 INFO L232 lantSequenceWeakener]: Weakened 120 states. On average, predicates are now at 76.08% of their original sizes. [2018-07-23 23:04:07,404 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 23:04:09,577 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 23:04:09,579 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:04:09,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-07-23 23:04:09,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:04:09,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:04:09,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:04:09,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:04:09,582 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown