java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:34:51,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:34:51,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:34:51,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:34:51,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:34:51,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:34:51,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:34:51,782 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:34:51,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:34:51,786 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:34:51,787 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:34:51,787 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:34:51,788 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:34:51,789 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:34:51,790 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:34:51,791 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:34:51,792 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:34:51,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:34:51,796 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:34:51,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:34:51,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:34:51,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:34:51,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:34:51,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:34:51,812 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:34:51,813 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:34:51,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:34:51,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:34:51,818 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:34:51,819 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:34:51,819 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:34:51,821 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:34:51,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:34:51,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:34:51,824 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:34:51,825 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:34:51,826 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:34:51,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:34:51,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:34:51,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:34:51,855 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:34:51,855 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:34:51,855 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:34:51,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:34:51,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:34:51,856 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:34:51,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:34:51,856 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:34:51,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:34:51,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:34:51,857 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:34:51,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:34:51,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:34:51,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:34:51,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:34:51,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:34:51,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:34:51,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:34:51,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:34:51,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:34:51,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:34:51,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:34:51,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:34:51,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:34:51,860 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:34:51,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:34:51,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:34:51,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:34:51,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:34:51,861 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:34:51,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:34:51,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:34:51,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:34:51,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:34:51,927 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:34:51,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-09-10 11:34:52,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aa7ae16/c5cf2d5e344c458d9f5fa45fa44fa315/FLAG147c77cc0 [2018-09-10 11:34:52,616 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:34:52,617 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-09-10 11:34:52,633 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aa7ae16/c5cf2d5e344c458d9f5fa45fa44fa315/FLAG147c77cc0 [2018-09-10 11:34:52,650 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aa7ae16/c5cf2d5e344c458d9f5fa45fa44fa315 [2018-09-10 11:34:52,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:34:52,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:34:52,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:34:52,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:34:52,673 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:34:52,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:34:52" (1/1) ... [2018-09-10 11:34:52,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280b0a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:52, skipping insertion in model container [2018-09-10 11:34:52,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:34:52" (1/1) ... [2018-09-10 11:34:52,915 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:34:53,400 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:34:53,418 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:34:53,576 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:34:53,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53 WrapperNode [2018-09-10 11:34:53,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:34:53,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:34:53,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:34:53,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:34:53,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:53,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:53,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:34:53,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:34:53,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:34:53,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:34:54,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (1/1) ... [2018-09-10 11:34:54,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:34:54,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:34:54,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:34:54,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:34:54,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (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 [2018-09-10 11:34:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:34:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:34:54,369 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 [2018-09-10 11:34:54,369 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 [2018-09-10 11:34:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:34:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:34:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:34:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:35:00,643 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:35:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:35:00 BoogieIcfgContainer [2018-09-10 11:35:00,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:35:00,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:35:00,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:35:00,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:35:00,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:34:52" (1/3) ... [2018-09-10 11:35:00,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c926dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:35:00, skipping insertion in model container [2018-09-10 11:35:00,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:53" (2/3) ... [2018-09-10 11:35:00,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c926dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:35:00, skipping insertion in model container [2018-09-10 11:35:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:35:00" (3/3) ... [2018-09-10 11:35:00,654 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19_true-unreach-call.c [2018-09-10 11:35:00,664 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:35:00,673 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:35:00,738 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:35:00,739 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:35:00,740 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:35:00,740 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:35:00,740 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:35:00,740 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:35:00,740 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:35:00,740 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:35:00,741 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:35:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:35:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-10 11:35:00,800 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:00,801 INFO L376 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] [2018-09-10 11:35:00,802 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1747963281, now seen corresponding path program 1 times [2018-09-10 11:35:00,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:00,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:00,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:00,862 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:01,340 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-10 11:35:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:01,365 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:35:01,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:35:01,366 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:35:01,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:35:01,393 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:35:01,394 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:35:01,396 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-10 11:35:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:05,399 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-09-10 11:35:05,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:35:05,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-09-10 11:35:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:05,424 INFO L225 Difference]: With dead ends: 982 [2018-09-10 11:35:05,424 INFO L226 Difference]: Without dead ends: 683 [2018-09-10 11:35:05,435 INFO L604 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 [2018-09-10 11:35:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-09-10 11:35:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-09-10 11:35:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-09-10 11:35:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-09-10 11:35:05,534 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 63 [2018-09-10 11:35:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:05,535 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-09-10 11:35:05,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:35:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-09-10 11:35:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-10 11:35:05,544 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:05,544 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:35:05,544 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1450662836, now seen corresponding path program 1 times [2018-09-10 11:35:05,545 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:05,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:05,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:05,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:05,547 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:06,064 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:35:06,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:35:06,064 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:35:06,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:35:06,067 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:35:06,067 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:35:06,067 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-09-10 11:35:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:15,375 INFO L93 Difference]: Finished difference Result 1980 states and 3018 transitions. [2018-09-10 11:35:15,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:35:15,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2018-09-10 11:35:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:15,391 INFO L225 Difference]: With dead ends: 1980 [2018-09-10 11:35:15,391 INFO L226 Difference]: Without dead ends: 1303 [2018-09-10 11:35:15,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:35:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2018-09-10 11:35:15,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1246. [2018-09-10 11:35:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2018-09-10 11:35:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1784 transitions. [2018-09-10 11:35:15,506 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1784 transitions. Word has length 137 [2018-09-10 11:35:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:15,506 INFO L480 AbstractCegarLoop]: Abstraction has 1246 states and 1784 transitions. [2018-09-10 11:35:15,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:35:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1784 transitions. [2018-09-10 11:35:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-10 11:35:15,518 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:15,519 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:35:15,519 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:15,519 INFO L82 PathProgramCache]: Analyzing trace with hash 507062389, now seen corresponding path program 1 times [2018-09-10 11:35:15,519 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:15,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:15,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:15,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:15,521 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:15,810 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:35:15,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:35:15,810 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:35:15,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:35:15,815 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:35:15,816 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:35:15,816 INFO L87 Difference]: Start difference. First operand 1246 states and 1784 transitions. Second operand 4 states. [2018-09-10 11:35:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:19,422 INFO L93 Difference]: Finished difference Result 4504 states and 6780 transitions. [2018-09-10 11:35:19,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:35:19,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-09-10 11:35:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:19,452 INFO L225 Difference]: With dead ends: 4504 [2018-09-10 11:35:19,452 INFO L226 Difference]: Without dead ends: 3264 [2018-09-10 11:35:19,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:35:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-09-10 11:35:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3234. [2018-09-10 11:35:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2018-09-10 11:35:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4526 transitions. [2018-09-10 11:35:19,572 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4526 transitions. Word has length 195 [2018-09-10 11:35:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:19,574 INFO L480 AbstractCegarLoop]: Abstraction has 3234 states and 4526 transitions. [2018-09-10 11:35:19,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:35:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4526 transitions. [2018-09-10 11:35:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-10 11:35:19,584 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:19,584 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:35:19,584 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1163566050, now seen corresponding path program 1 times [2018-09-10 11:35:19,585 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:19,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:19,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:19,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:19,587 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:35:19,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:19,846 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:35:19,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:19,856 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:20,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-10 11:35:20,552 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:35:21,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:35:21,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:35:21,069 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:35:21,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:35:21,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:35:21,070 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:35:21,070 INFO L87 Difference]: Start difference. First operand 3234 states and 4526 transitions. Second operand 5 states. [2018-09-10 11:35:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:27,064 INFO L93 Difference]: Finished difference Result 9336 states and 13589 transitions. [2018-09-10 11:35:27,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:35:27,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-09-10 11:35:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:27,104 INFO L225 Difference]: With dead ends: 9336 [2018-09-10 11:35:27,104 INFO L226 Difference]: Without dead ends: 6108 [2018-09-10 11:35:27,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:35:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2018-09-10 11:35:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 5844. [2018-09-10 11:35:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5844 states. [2018-09-10 11:35:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 7863 transitions. [2018-09-10 11:35:27,307 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 7863 transitions. Word has length 210 [2018-09-10 11:35:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:27,308 INFO L480 AbstractCegarLoop]: Abstraction has 5844 states and 7863 transitions. [2018-09-10 11:35:27,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:35:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 7863 transitions. [2018-09-10 11:35:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-10 11:35:27,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:27,318 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:35:27,318 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2105312380, now seen corresponding path program 1 times [2018-09-10 11:35:27,319 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:27,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:27,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:27,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:27,320 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:28,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:28,403 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:35:28,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:28,410 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:28,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:28,798 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 11:38:18,888 WARN L175 SmtUtils]: Spent 2.82 m on a formula simplification. DAG size of input: 1513 DAG size of output: 168 [2018-09-10 11:38:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 71 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:38:19,617 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:38:20,129 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-09-10 11:38:20,370 WARN L175 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-09-10 11:38:23,495 WARN L175 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-09-10 11:38:24,031 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 11:38:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:38:24,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:38:24,753 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:38:24,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:38:24,772 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:38:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:38:25,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:38:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:38:25,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:38:25,940 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-09-10 11:38:26,866 WARN L175 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-10 11:38:27,016 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-10 11:38:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 11:38:27,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:38:27,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 8, 5] total 32 [2018-09-10 11:38:27,382 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:38:27,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 11:38:27,383 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 11:38:27,384 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2018-09-10 11:38:27,384 INFO L87 Difference]: Start difference. First operand 5844 states and 7863 transitions. Second operand 18 states. Received shutdown request... [2018-09-10 11:39:21,212 WARN L183 SmtUtils]: Removed 9 from assertion stack [2018-09-10 11:39:21,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 11:39:21,213 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:39:21,217 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:39:21,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:39:21 BoogieIcfgContainer [2018-09-10 11:39:21,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:39:21,218 INFO L168 Benchmark]: Toolchain (without parser) took 268555.67 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -207.8 MB). Peak memory consumption was 978.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,219 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:39:21,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1002.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 169.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,221 INFO L168 Benchmark]: Boogie Preprocessor took 453.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -972.2 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,222 INFO L168 Benchmark]: RCFGBuilder took 6351.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 216.1 MB). Peak memory consumption was 216.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,223 INFO L168 Benchmark]: TraceAbstraction took 260571.69 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 345.0 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 453.1 MB). Peak memory consumption was 798.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:39:21,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1002.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 169.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 453.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -972.2 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6351.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 216.1 MB). Peak memory consumption was 216.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260571.69 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 345.0 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 453.1 MB). Peak memory consumption was 798.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (5844states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 176. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 260.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 76.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 907 SDtfs, 5123 SDslu, 998 SDs, 0 SdLazy, 8329 SolverSat, 1537 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 23.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1493 GetRequests, 1416 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 176.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5844occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 351 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 181.7s InterpolantComputationTime, 1577 NumberOfCodeBlocks, 1577 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2284 ConstructedInterpolants, 11 QuantifiedInterpolants, 5731289 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1015/1597 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-39-21-244.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-39-21-244.csv Completed graceful shutdown