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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label02_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:57:08,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:57:08,660 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:57:08,673 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:57:08,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:57:08,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:57:08,676 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:57:08,678 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:57:08,679 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:57:08,680 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:57:08,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:57:08,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:57:08,682 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:57:08,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:57:08,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:57:08,685 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:57:08,686 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:57:08,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:57:08,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:57:08,692 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:57:08,693 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:57:08,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:57:08,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:57:08,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:57:08,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:57:08,704 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:57:08,705 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:57:08,707 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:57:08,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:57:08,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:57:08,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:57:08,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:57:08,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:57:08,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:57:08,717 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:57:08,718 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:57:08,718 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:57:08,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:57:08,747 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:57:08,747 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:57:08,748 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:57:08,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:57:08,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:57:08,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:57:08,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:57:08,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:57:08,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:57:08,749 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:57:08,749 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:57:08,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:57:08,750 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:57:08,750 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:57:08,750 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:57:08,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:57:08,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:57:08,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:57:08,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:57:08,751 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:57:08,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:57:08,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:57:08,752 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:57:08,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:57:08,752 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:57:08,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:57:08,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:57:08,753 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:57:08,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:57:08,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:57:08,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:57:08,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:57:08,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:57:08,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:57:08,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:57:08,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:57:08,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:57:08,838 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:57:08,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label02_true-unreach-call_false-termination.c [2018-11-07 00:57:08,897 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1764450/acf5936c8acc457f9157ec0b1637d735/FLAG8521fc56d [2018-11-07 00:57:09,528 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:57:09,529 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label02_true-unreach-call_false-termination.c [2018-11-07 00:57:09,550 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1764450/acf5936c8acc457f9157ec0b1637d735/FLAG8521fc56d [2018-11-07 00:57:09,566 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1764450/acf5936c8acc457f9157ec0b1637d735 [2018-11-07 00:57:09,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:57:09,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:57:09,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:57:09,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:57:09,584 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:57:09,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:09" (1/1) ... [2018-11-07 00:57:09,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb7d90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:09, skipping insertion in model container [2018-11-07 00:57:09,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:09" (1/1) ... [2018-11-07 00:57:09,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:57:09,678 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:57:10,191 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:57:10,196 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:57:10,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:57:10,310 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:57:10,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10 WrapperNode [2018-11-07 00:57:10,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:57:10,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:57:10,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:57:10,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:57:10,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:57:10,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:57:10,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:57:10,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:57:10,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (1/1) ... [2018-11-07 00:57:10,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:57:10,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:57:10,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:57:10,582 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:57:10,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (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 [2018-11-07 00:57:10,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:57:10,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:57:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:57:10,646 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:57:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:57:10,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:57:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:57:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:57:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:57:13,920 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:57:13,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:13 BoogieIcfgContainer [2018-11-07 00:57:13,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:57:13,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:57:13,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:57:13,926 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:57:13,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:09" (1/3) ... [2018-11-07 00:57:13,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bde78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:13, skipping insertion in model container [2018-11-07 00:57:13,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:10" (2/3) ... [2018-11-07 00:57:13,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bde78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:13, skipping insertion in model container [2018-11-07 00:57:13,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:13" (3/3) ... [2018-11-07 00:57:13,930 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label02_true-unreach-call_false-termination.c [2018-11-07 00:57:13,941 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:57:13,950 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:57:13,964 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:57:14,006 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:57:14,007 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:57:14,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:57:14,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:57:14,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:57:14,008 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:57:14,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:57:14,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:57:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-11-07 00:57:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 00:57:14,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:14,054 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:14,057 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:14,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash -388203563, now seen corresponding path program 1 times [2018-11-07 00:57:14,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:14,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:14,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:14,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:14,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:14,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:14,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:57:14,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:14,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:57:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:57:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:14,782 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-11-07 00:57:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:16,424 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-11-07 00:57:16,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:57:16,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-11-07 00:57:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:16,446 INFO L225 Difference]: With dead ends: 550 [2018-11-07 00:57:16,446 INFO L226 Difference]: Without dead ends: 340 [2018-11-07 00:57:16,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-07 00:57:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-07 00:57:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-07 00:57:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-11-07 00:57:16,529 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 97 [2018-11-07 00:57:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:16,530 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-11-07 00:57:16,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:57:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-11-07 00:57:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 00:57:16,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:16,538 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:57:16,538 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:16,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:16,542 INFO L82 PathProgramCache]: Analyzing trace with hash -663690794, now seen corresponding path program 1 times [2018-11-07 00:57:16,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:16,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:16,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:16,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:16,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:16,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:16,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:57:16,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:16,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:57:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:57:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:57:16,747 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-11-07 00:57:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:18,401 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-11-07 00:57:18,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:18,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-07 00:57:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:18,409 INFO L225 Difference]: With dead ends: 888 [2018-11-07 00:57:18,409 INFO L226 Difference]: Without dead ends: 554 [2018-11-07 00:57:18,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:57:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-11-07 00:57:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-11-07 00:57:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-11-07 00:57:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-11-07 00:57:18,458 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 108 [2018-11-07 00:57:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:18,459 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-11-07 00:57:18,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-11-07 00:57:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 00:57:18,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:18,466 INFO L375 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] [2018-11-07 00:57:18,467 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:18,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash 280162818, now seen corresponding path program 1 times [2018-11-07 00:57:18,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:18,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:18,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:18,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:18,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:18,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:18,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:57:18,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:18,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:57:18,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:57:18,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:18,668 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-11-07 00:57:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:20,076 INFO L93 Difference]: Finished difference Result 1529 states and 2431 transitions. [2018-11-07 00:57:20,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:57:20,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2018-11-07 00:57:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:20,084 INFO L225 Difference]: With dead ends: 1529 [2018-11-07 00:57:20,084 INFO L226 Difference]: Without dead ends: 996 [2018-11-07 00:57:20,088 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2018-11-07 00:57:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 989. [2018-11-07 00:57:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2018-11-07 00:57:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1498 transitions. [2018-11-07 00:57:20,141 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1498 transitions. Word has length 109 [2018-11-07 00:57:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:20,142 INFO L480 AbstractCegarLoop]: Abstraction has 989 states and 1498 transitions. [2018-11-07 00:57:20,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:57:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1498 transitions. [2018-11-07 00:57:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 00:57:20,148 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:20,149 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:20,149 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:20,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:20,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1178712562, now seen corresponding path program 1 times [2018-11-07 00:57:20,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:20,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:20,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:20,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:20,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:57:20,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:20,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:57:20,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:57:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:20,435 INFO L87 Difference]: Start difference. First operand 989 states and 1498 transitions. Second operand 3 states. [2018-11-07 00:57:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:22,235 INFO L93 Difference]: Finished difference Result 2872 states and 4515 transitions. [2018-11-07 00:57:22,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:57:22,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-11-07 00:57:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:22,248 INFO L225 Difference]: With dead ends: 2872 [2018-11-07 00:57:22,248 INFO L226 Difference]: Without dead ends: 1889 [2018-11-07 00:57:22,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:57:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-11-07 00:57:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1886. [2018-11-07 00:57:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2018-11-07 00:57:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2743 transitions. [2018-11-07 00:57:22,316 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2743 transitions. Word has length 115 [2018-11-07 00:57:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:22,317 INFO L480 AbstractCegarLoop]: Abstraction has 1886 states and 2743 transitions. [2018-11-07 00:57:22,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:57:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2743 transitions. [2018-11-07 00:57:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 00:57:22,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:22,325 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:22,325 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:22,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 856948235, now seen corresponding path program 1 times [2018-11-07 00:57:22,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:22,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:22,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:22,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:22,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:22,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:57:22,497 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:57:22,498 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-11-07 00:57:22,500 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 00:57:22,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:57:22,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:57:59,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:57:59,425 INFO L272 AbstractInterpreter]: Visited 101 different actions 166 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 00:57:59,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:59,436 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:58:05,587 INFO L227 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 81.8% of their original sizes. [2018-11-07 00:58:05,587 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:58:57,794 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-11-07 00:58:57,795 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:58:57,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:58:57,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 00:58:57,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:57,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 00:58:57,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 00:58:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:58:57,797 INFO L87 Difference]: Start difference. First operand 1886 states and 2743 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 01:01:30,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 01:01:30,004 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:01:30,010 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:01:30,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:01:30 BoogieIcfgContainer [2018-11-07 01:01:30,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:01:30,012 INFO L168 Benchmark]: Toolchain (without parser) took 260434.11 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 719.6 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,014 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. [2018-11-07 01:01:30,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.72 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.29 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,017 INFO L168 Benchmark]: Boogie Preprocessor took 119.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,017 INFO L168 Benchmark]: RCFGBuilder took 3340.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 114.8 MB). Peak memory consumption was 114.8 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,018 INFO L168 Benchmark]: TraceAbstraction took 256088.22 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -741.2 MB). Peak memory consumption was 660.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:01:30,025 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 731.72 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 149.29 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3340.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 114.8 MB). Peak memory consumption was 114.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256088.22 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -741.2 MB). Peak memory consumption was 660.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 446]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 446). Cancelled while BasicCegarLoop was constructing difference of abstraction (1886states) and FLOYD_HOARE automaton (currently 21 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (791 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 256.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 158.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 516 SDtfs, 1616 SDslu, 257 SDs, 0 SdLazy, 2637 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 64.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1886occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933953923760986 AbsIntWeakeningRatio, 0.26119402985074625 AbsIntAvgWeakeningVarsNumRemoved, 205.2089552238806 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 559 ConstructedInterpolants, 0 QuantifiedInterpolants, 164053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 74/76 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown