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/Problem11_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:09:51,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:09:51,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:09:51,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:09:51,586 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:09:51,587 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:09:51,589 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:09:51,591 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:09:51,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:09:51,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:09:51,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:09:51,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:09:51,595 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:09:51,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:09:51,598 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:09:51,598 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:09:51,599 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:09:51,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:09:51,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:09:51,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:09:51,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:09:51,608 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:09:51,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:09:51,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:09:51,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:09:51,612 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:09:51,613 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:09:51,614 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:09:51,615 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:09:51,616 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:09:51,616 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:09:51,617 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:09:51,618 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:09:51,618 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:09:51,619 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:09:51,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:09:51,620 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 11:09:51,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:09:51,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:09:51,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:09:51,638 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:09:51,638 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:09:51,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:09:51,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:09:51,639 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:09:51,639 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:09:51,639 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:09:51,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:09:51,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:09:51,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:09:51,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:09:51,643 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:09:51,643 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:09:51,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:09:51,643 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:09:51,644 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:09:51,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:09:51,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:09:51,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:09:51,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:09:51,645 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:09:51,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:09:51,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:09:51,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:09:51,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:09:51,646 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:09:51,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:09:51,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:09:51,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:09:51,646 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:09:51,647 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:09:51,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:09:51,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:09:51,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:09:51,715 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:09:51,715 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:09:51,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label14_false-unreach-call.c [2018-10-27 11:09:51,775 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/91f716252/9d0f4d3e83ad4811b91c8c9fb9803b04/FLAG6a5149514 [2018-10-27 11:09:52,477 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:09:52,478 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label14_false-unreach-call.c [2018-10-27 11:09:52,508 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/91f716252/9d0f4d3e83ad4811b91c8c9fb9803b04/FLAG6a5149514 [2018-10-27 11:09:52,522 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/91f716252/9d0f4d3e83ad4811b91c8c9fb9803b04 [2018-10-27 11:09:52,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:09:52,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:09:52,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:09:52,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:09:52,541 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:09:52,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:09:52" (1/1) ... [2018-10-27 11:09:52,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c8d1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:52, skipping insertion in model container [2018-10-27 11:09:52,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:09:52" (1/1) ... [2018-10-27 11:09:52,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:09:52,635 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:09:53,196 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:09:53,200 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:09:53,384 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:09:53,410 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:09:53,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53 WrapperNode [2018-10-27 11:09:53,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:09:53,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:09:53,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:09:53,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:09:53,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:09:53,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:09:53,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:09:53,719 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:09:53,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (1/1) ... [2018-10-27 11:09:53,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:09:53,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:09:53,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:09:53,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:09:53,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (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 11:09:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:09:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:09:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:09:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:09:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:09:53,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:09:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:09:53,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:09:58,731 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:09:58,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:09:58 BoogieIcfgContainer [2018-10-27 11:09:58,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:09:58,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:09:58,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:09:58,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:09:58,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:09:52" (1/3) ... [2018-10-27 11:09:58,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a591b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:09:58, skipping insertion in model container [2018-10-27 11:09:58,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:09:53" (2/3) ... [2018-10-27 11:09:58,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a591b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:09:58, skipping insertion in model container [2018-10-27 11:09:58,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:09:58" (3/3) ... [2018-10-27 11:09:58,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label14_false-unreach-call.c [2018-10-27 11:09:58,755 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:09:58,765 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:09:58,785 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:09:58,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:09:58,837 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:09:58,837 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:09:58,838 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:09:58,838 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:09:58,838 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:09:58,838 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:09:58,838 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:09:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 11:09:58,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 11:09:58,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:09:58,900 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] [2018-10-27 11:09:58,903 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:09:58,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:09:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1160444273, now seen corresponding path program 1 times [2018-10-27 11:09:58,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:09:58,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:09:58,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:09:58,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:09:58,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:09:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:09:59,404 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 11:09:59,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:09:59,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:09:59,407 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:09:59,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:09:59,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:09:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:09:59,432 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 11:10:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:10:02,749 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-10-27 11:10:02,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:10:02,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-27 11:10:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:10:02,777 INFO L225 Difference]: With dead ends: 998 [2018-10-27 11:10:02,778 INFO L226 Difference]: Without dead ends: 699 [2018-10-27 11:10:02,787 INFO L605 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 [2018-10-27 11:10:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-10-27 11:10:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-10-27 11:10:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-27 11:10:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-10-27 11:10:02,898 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 23 [2018-10-27 11:10:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:10:02,898 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-10-27 11:10:02,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:10:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-10-27 11:10:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-27 11:10:02,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:10:02,905 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:10:02,906 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:10:02,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:02,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1757464148, now seen corresponding path program 1 times [2018-10-27 11:10:02,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:10:02,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:02,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:10:02,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:02,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:10:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:10:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:10:03,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:10:03,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 11:10:03,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:10:03,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:10:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:10:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:10:03,416 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 7 states. [2018-10-27 11:10:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:10:10,413 INFO L93 Difference]: Finished difference Result 2550 states and 4242 transitions. [2018-10-27 11:10:10,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 11:10:10,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2018-10-27 11:10:10,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:10:10,433 INFO L225 Difference]: With dead ends: 2550 [2018-10-27 11:10:10,433 INFO L226 Difference]: Without dead ends: 1863 [2018-10-27 11:10:10,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 11:10:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2018-10-27 11:10:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1435. [2018-10-27 11:10:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2018-10-27 11:10:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2153 transitions. [2018-10-27 11:10:10,531 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2153 transitions. Word has length 97 [2018-10-27 11:10:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:10:10,531 INFO L481 AbstractCegarLoop]: Abstraction has 1435 states and 2153 transitions. [2018-10-27 11:10:10,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 11:10:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2153 transitions. [2018-10-27 11:10:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 11:10:10,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:10:10,542 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 11:10:10,542 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:10:10,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1282100994, now seen corresponding path program 1 times [2018-10-27 11:10:10,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:10:10,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:10,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:10:10,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:10:10,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:10:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:10:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:10:10,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:10:10,789 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:10:10,790 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-27 11:10:10,792 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 11:10:10,841 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:10:10,842 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:10:11,327 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:10:12,370 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:10:12,372 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 11:10:12,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:10:12,416 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:10:13,875 INFO L227 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 73.01% of their original sizes. [2018-10-27 11:10:13,876 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:10:14,233 INFO L415 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2018-10-27 11:10:14,233 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:10:14,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:10:14,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 11:10:14,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:10:14,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:10:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:10:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:10:14,238 INFO L87 Difference]: Start difference. First operand 1435 states and 2153 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown