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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:28:49,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:28:49,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:28:49,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:28:49,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:28:49,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:28:49,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:28:49,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:28:49,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:28:49,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:28:49,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:28:49,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:28:49,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:28:49,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:28:49,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:28:49,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:28:49,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:28:49,550 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:28:49,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:28:49,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:28:49,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:28:49,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:28:49,567 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:28:49,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:28:49,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:28:49,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:28:49,570 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:28:49,570 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:28:49,571 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:28:49,575 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:28:49,575 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:28:49,576 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:28:49,576 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:28:49,576 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:28:49,578 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:28:49,579 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:28:49,580 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:28:49,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:28:49,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:28:49,606 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:28:49,607 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:28:49,607 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:28:49,607 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:28:49,607 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:28:49,607 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:28:49,608 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:28:49,608 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:28:49,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:28:49,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:28:49,610 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:28:49,610 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:28:49,610 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:28:49,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:28:49,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:28:49,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:28:49,612 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:28:49,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:28:49,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:28:49,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:28:49,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:28:49,613 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:28:49,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:28:49,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:28:49,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:28:49,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:28:49,615 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:28:49,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:28:49,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:28:49,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:28:49,616 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:28:49,616 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:28:49,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:28:49,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:28:49,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:28:49,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:28:49,707 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:28:49,708 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-11-07 12:28:49,770 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5724140b8/c6d27724c0994814923b35aed93b2637/FLAGa3f4dbae6 [2018-11-07 12:28:50,498 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:28:50,499 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-11-07 12:28:50,525 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5724140b8/c6d27724c0994814923b35aed93b2637/FLAGa3f4dbae6 [2018-11-07 12:28:50,546 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5724140b8/c6d27724c0994814923b35aed93b2637 [2018-11-07 12:28:50,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:28:50,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:28:50,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:28:50,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:28:50,568 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:28:50,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:50" (1/1) ... [2018-11-07 12:28:50,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:50, skipping insertion in model container [2018-11-07 12:28:50,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:50" (1/1) ... [2018-11-07 12:28:50,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:28:50,719 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:28:51,739 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:28:51,746 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:28:52,158 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:28:52,184 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:28:52,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52 WrapperNode [2018-11-07 12:28:52,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:28:52,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:28:52,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:28:52,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:28:52,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:28:52,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:28:52,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:28:52,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:28:52,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (1/1) ... [2018-11-07 12:28:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:28:52,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:28:52,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:28:52,701 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:28:52,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (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 12:28:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:28:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:28:52,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:28:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:28:52,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:28:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:28:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:28:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:28:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:28:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:28:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:29:01,759 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:29:01,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:01 BoogieIcfgContainer [2018-11-07 12:29:01,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:29:01,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:29:01,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:29:01,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:29:01,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:50" (1/3) ... [2018-11-07 12:29:01,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f328bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:01, skipping insertion in model container [2018-11-07 12:29:01,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:52" (2/3) ... [2018-11-07 12:29:01,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f328bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:01, skipping insertion in model container [2018-11-07 12:29:01,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:01" (3/3) ... [2018-11-07 12:29:01,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54_false-unreach-call.c [2018-11-07 12:29:01,778 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:29:01,787 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:29:01,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:29:01,846 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:29:01,846 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:29:01,846 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:29:01,846 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:29:01,846 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:29:01,846 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:29:01,847 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:29:01,847 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:29:01,880 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 12:29:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 12:29:01,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:29:01,892 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] [2018-11-07 12:29:01,895 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:29:01,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:29:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1533531428, now seen corresponding path program 1 times [2018-11-07 12:29:01,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:29:01,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:01,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:29:01,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:01,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:29:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:29:02,329 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 12:29:02,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:29:02,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:29:02,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:29:02,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:29:02,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:29:02,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:29:02,360 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 12:29:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:29:11,183 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 12:29:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:29:11,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-07 12:29:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:29:11,220 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 12:29:11,220 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 12:29:11,232 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 [2018-11-07 12:29:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 12:29:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 12:29:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 12:29:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 12:29:11,384 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 20 [2018-11-07 12:29:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:29:11,385 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 12:29:11,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:29:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 12:29:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 12:29:11,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:29:11,392 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:29:11,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:29:11,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:29:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1982050186, now seen corresponding path program 1 times [2018-11-07 12:29:11,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:29:11,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:11,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:29:11,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:11,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:29:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:29:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:29:12,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:29:12,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:29:12,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:29:12,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:29:12,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:29:12,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:29:12,009 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 12:29:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:29:22,178 INFO L93 Difference]: Finished difference Result 5785 states and 10669 transitions. [2018-11-07 12:29:22,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:29:22,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-07 12:29:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:29:22,214 INFO L225 Difference]: With dead ends: 5785 [2018-11-07 12:29:22,214 INFO L226 Difference]: Without dead ends: 4266 [2018-11-07 12:29:22,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:29:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2018-11-07 12:29:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4239. [2018-11-07 12:29:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4239 states. [2018-11-07 12:29:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6345 transitions. [2018-11-07 12:29:22,406 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6345 transitions. Word has length 99 [2018-11-07 12:29:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:29:22,407 INFO L480 AbstractCegarLoop]: Abstraction has 4239 states and 6345 transitions. [2018-11-07 12:29:22,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:29:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6345 transitions. [2018-11-07 12:29:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 12:29:22,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:29:22,415 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:29:22,415 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:29:22,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:29:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1539737542, now seen corresponding path program 1 times [2018-11-07 12:29:22,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:29:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:22,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:29:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:22,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:29:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:29:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:29:22,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:29:22,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:29:22,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:29:22,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:29:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:29:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:29:22,695 INFO L87 Difference]: Start difference. First operand 4239 states and 6345 transitions. Second operand 6 states. [2018-11-07 12:29:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:29:27,249 INFO L93 Difference]: Finished difference Result 12257 states and 20014 transitions. [2018-11-07 12:29:27,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:29:27,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 12:29:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:29:27,315 INFO L225 Difference]: With dead ends: 12257 [2018-11-07 12:29:27,315 INFO L226 Difference]: Without dead ends: 8024 [2018-11-07 12:29:27,344 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 12:29:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2018-11-07 12:29:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7939. [2018-11-07 12:29:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7939 states. [2018-11-07 12:29:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 11942 transitions. [2018-11-07 12:29:27,618 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 11942 transitions. Word has length 100 [2018-11-07 12:29:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:29:27,619 INFO L480 AbstractCegarLoop]: Abstraction has 7939 states and 11942 transitions. [2018-11-07 12:29:27,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:29:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 11942 transitions. [2018-11-07 12:29:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 12:29:27,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:29:27,625 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 12:29:27,625 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:29:27,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:29:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash -724720364, now seen corresponding path program 1 times [2018-11-07 12:29:27,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:29:27,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:27,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:29:27,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:29:27,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:29:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:29:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 12:29:28,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:29:28,018 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:29:28,019 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-11-07 12:29:28,021 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [770], [772], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 12:29:28,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:29:28,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:29:28,487 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:29:30,065 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:29:30,066 INFO L272 AbstractInterpreter]: Visited 87 different actions 248 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 12:29:30,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:29:30,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:29:30,941 INFO L227 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 75.01% of their original sizes. [2018-11-07 12:29:30,941 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:29:31,857 INFO L415 sIntCurrentIteration]: We unified 173 AI predicates to 173 [2018-11-07 12:29:31,857 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:29:31,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:29:31,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 12:29:31,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:29:31,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 12:29:31,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 12:29:31,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 12:29:31,860 INFO L87 Difference]: Start difference. First operand 7939 states and 11942 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown