java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:37:25,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:37:25,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:37:25,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:37:25,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:37:25,684 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:37:25,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:37:25,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:37:25,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:37:25,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:37:25,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:37:25,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:37:25,692 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:37:25,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:37:25,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:37:25,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:37:25,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:37:25,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:37:25,700 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:37:25,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:37:25,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:37:25,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:37:25,707 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:37:25,707 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:37:25,708 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:37:25,709 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:37:25,710 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:37:25,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:37:25,712 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:37:25,713 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:37:25,713 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:37:25,714 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:37:25,714 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:37:25,714 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:37:25,716 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:37:25,716 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:37:25,717 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:37:25,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:37:25,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:37:25,745 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:37:25,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:37:25,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:37:25,746 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:37:25,746 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:37:25,746 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:37:25,747 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:37:25,747 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:37:25,747 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:37:25,747 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:37:25,748 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:37:25,748 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:37:25,748 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:37:25,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:37:25,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:37:25,749 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:37:25,749 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:37:25,749 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:37:25,750 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:37:25,750 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:37:25,750 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:37:25,750 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:37:25,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:37:25,751 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:37:25,751 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:37:25,751 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:37:25,751 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:37:25,751 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:37:25,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:37:25,752 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:37:25,752 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:37:25,752 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:37:25,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:37:25,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:37:25,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:37:25,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:37:25,825 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:37:25,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-27 14:37:25,902 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea16b79e2/6bfdc7d2ec0b49b3aa33da79a904c344/FLAG19b99be19 [2018-10-27 14:37:26,581 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:37:26,582 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-27 14:37:26,606 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea16b79e2/6bfdc7d2ec0b49b3aa33da79a904c344/FLAG19b99be19 [2018-10-27 14:37:26,621 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea16b79e2/6bfdc7d2ec0b49b3aa33da79a904c344 [2018-10-27 14:37:26,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:37:26,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:37:26,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:37:26,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:37:26,639 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:37:26,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:37:26" (1/1) ... [2018-10-27 14:37:26,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4dd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:26, skipping insertion in model container [2018-10-27 14:37:26,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:37:26" (1/1) ... [2018-10-27 14:37:26,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:37:26,764 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:37:27,669 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:37:27,674 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:37:27,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:37:27,994 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:37:27,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27 WrapperNode [2018-10-27 14:37:27,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:37:27,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:37:27,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:37:27,996 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:37:28,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:37:28,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:37:28,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:37:28,403 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:37:28,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... [2018-10-27 14:37:28,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:37:28,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:37:28,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:37:28,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:37:28,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:37:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:37:28,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:37:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:37:28,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:37:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:37:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:37:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:37:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:37:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:37:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:37:35,796 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:37:35,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:37:35 BoogieIcfgContainer [2018-10-27 14:37:35,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:37:35,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:37:35,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:37:35,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:37:35,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:37:26" (1/3) ... [2018-10-27 14:37:35,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351b04bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:37:35, skipping insertion in model container [2018-10-27 14:37:35,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:27" (2/3) ... [2018-10-27 14:37:35,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351b04bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:37:35, skipping insertion in model container [2018-10-27 14:37:35,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:37:35" (3/3) ... [2018-10-27 14:37:35,807 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-10-27 14:37:35,818 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:37:35,828 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:37:35,846 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:37:35,900 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:37:35,900 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:37:35,900 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:37:35,900 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:37:35,900 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:37:35,900 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:37:35,901 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:37:35,901 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:37:35,940 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:37:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-27 14:37:35,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:35,953 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] [2018-10-27 14:37:35,955 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:35,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-10-27 14:37:35,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:36,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:36,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:36,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:36,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:36,551 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 14:37:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:37:36,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:37:36,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:37:36,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:36,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:37:36,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:37:36,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:36,714 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 14:37:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:37:47,157 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-27 14:37:47,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:37:47,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-10-27 14:37:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:37:47,184 INFO L225 Difference]: With dead ends: 1510 [2018-10-27 14:37:47,185 INFO L226 Difference]: Without dead ends: 1066 [2018-10-27 14:37:47,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-27 14:37:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-27 14:37:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-27 14:37:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-27 14:37:47,318 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-10-27 14:37:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:37:47,321 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-27 14:37:47,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:37:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-27 14:37:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 14:37:47,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:47,336 INFO L375 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:37:47,336 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:47,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-10-27 14:37:47,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:47,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:47,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:47,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:47,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:37:47,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:37:47,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:37:47,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:47,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:37:47,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:37:47,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:47,631 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-10-27 14:37:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:37:54,503 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-10-27 14:37:54,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:37:54,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-27 14:37:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:37:54,525 INFO L225 Difference]: With dead ends: 3981 [2018-10-27 14:37:54,525 INFO L226 Difference]: Without dead ends: 2923 [2018-10-27 14:37:54,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-27 14:37:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-10-27 14:37:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-10-27 14:37:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-10-27 14:37:54,663 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-10-27 14:37:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:37:54,663 INFO L481 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-10-27 14:37:54,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:37:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-10-27 14:37:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-27 14:37:54,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:54,682 INFO L375 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:37:54,683 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:54,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-10-27 14:37:54,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:54,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:54,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:54,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:54,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 14:37:55,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:37:55,198 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:37:55,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-27 14:37:55,201 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:37:55,246 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:37:55,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:37:55,897 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:37:59,411 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:37:59,419 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 14:37:59,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:59,474 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:38:00,668 INFO L227 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 78.21% of their original sizes. [2018-10-27 14:38:00,669 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:38:04,079 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-10-27 14:38:04,079 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:38:04,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:38:04,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 14:38:04,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:04,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 14:38:04,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 14:38:04,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-10-27 14:38:04,083 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 18 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown