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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:41:03,611 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:41:03,613 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:41:03,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:41:03,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:41:03,627 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:41:03,628 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:41:03,630 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:41:03,632 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:41:03,633 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:41:03,634 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:41:03,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:41:03,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:41:03,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:41:03,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:41:03,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:41:03,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:41:03,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:41:03,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:41:03,648 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:41:03,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:41:03,650 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:41:03,658 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:41:03,658 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:41:03,659 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:41:03,660 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:41:03,660 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:41:03,661 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:41:03,665 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:41:03,666 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:41:03,667 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:41:03,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 18:41:03,672 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:41:03,702 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:41:03,703 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:41:03,703 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:41:03,704 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:41:03,705 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:41:03,705 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:41:03,705 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:41:03,705 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:41:03,706 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:41:03,706 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:41:03,706 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:41:03,706 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:41:03,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:41:03,708 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:41:03,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:41:03,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:41:03,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:41:03,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:41:03,709 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:41:03,710 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:41:03,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:41:03,710 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:41:03,710 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:41:03,710 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:41:03,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:41:03,712 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:41:03,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:41:03,712 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:41:03,713 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:41:03,713 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:41:03,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:41:03,713 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:41:03,713 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:41:03,714 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:41:03,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:41:03,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:41:03,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:41:03,799 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:41:03,800 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:41:03,801 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-10-24 18:41:03,865 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e93ed77b/3c86978623584c0f874543f81f76899c/FLAGea1278691 [2018-10-24 18:41:04,519 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:41:04,520 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-10-24 18:41:04,541 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e93ed77b/3c86978623584c0f874543f81f76899c/FLAGea1278691 [2018-10-24 18:41:04,556 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e93ed77b/3c86978623584c0f874543f81f76899c [2018-10-24 18:41:04,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:41:04,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:41:04,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:04,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:41:04,574 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:41:04,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:04" (1/1) ... [2018-10-24 18:41:04,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceffb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:04, skipping insertion in model container [2018-10-24 18:41:04,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:04" (1/1) ... [2018-10-24 18:41:04,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:41:04,694 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:41:05,527 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:05,533 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:41:05,819 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:05,841 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:41:05,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05 WrapperNode [2018-10-24 18:41:05,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:05,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:05,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:41:05,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:41:05,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:05,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:06,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:41:06,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:41:06,241 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:41:06,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (1/1) ... [2018-10-24 18:41:06,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:41:06,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:41:06,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:41:06,461 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:41:06,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (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 [2018-10-24 18:41:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:41:06,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:41:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:41:06,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:41:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:41:06,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:41:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:41:06,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:41:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:41:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:41:13,188 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:41:13,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:13 BoogieIcfgContainer [2018-10-24 18:41:13,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:41:13,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:41:13,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:41:13,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:41:13,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:41:04" (1/3) ... [2018-10-24 18:41:13,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d65206a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:13, skipping insertion in model container [2018-10-24 18:41:13,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:05" (2/3) ... [2018-10-24 18:41:13,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d65206a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:13, skipping insertion in model container [2018-10-24 18:41:13,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:13" (3/3) ... [2018-10-24 18:41:13,198 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label47_false-unreach-call.c [2018-10-24 18:41:13,209 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:41:13,219 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:41:13,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:41:13,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:41:13,280 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:41:13,280 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:41:13,280 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:41:13,280 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:41:13,281 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:41:13,281 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:41:13,281 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:41:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:41:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 18:41:13,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:13,323 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:41:13,325 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:13,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1243149204, now seen corresponding path program 1 times [2018-10-24 18:41:13,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:13,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:13,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:13,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:13,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:13,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:13,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:41:13,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:13,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:41:13,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:41:13,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:41:13,665 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 18:41:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:19,657 INFO L93 Difference]: Finished difference Result 1188 states and 2146 transitions. [2018-10-24 18:41:19,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:41:19,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-24 18:41:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:19,685 INFO L225 Difference]: With dead ends: 1188 [2018-10-24 18:41:19,685 INFO L226 Difference]: Without dead ends: 748 [2018-10-24 18:41:19,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:41:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-24 18:41:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2018-10-24 18:41:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-10-24 18:41:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1128 transitions. [2018-10-24 18:41:19,812 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1128 transitions. Word has length 16 [2018-10-24 18:41:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:19,813 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1128 transitions. [2018-10-24 18:41:19,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:41:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1128 transitions. [2018-10-24 18:41:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 18:41:19,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:19,818 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:41:19,819 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:19,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:19,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1523289623, now seen corresponding path program 1 times [2018-10-24 18:41:19,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:19,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:19,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:19,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:19,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:20,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:20,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:41:20,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:20,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:41:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:41:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:41:20,290 INFO L87 Difference]: Start difference. First operand 746 states and 1128 transitions. Second operand 4 states. [2018-10-24 18:41:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:28,592 INFO L93 Difference]: Finished difference Result 2736 states and 4249 transitions. [2018-10-24 18:41:28,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:41:28,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-24 18:41:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:28,617 INFO L225 Difference]: With dead ends: 2736 [2018-10-24 18:41:28,617 INFO L226 Difference]: Without dead ends: 1996 [2018-10-24 18:41:28,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:41:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2018-10-24 18:41:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1991. [2018-10-24 18:41:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2018-10-24 18:41:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2770 transitions. [2018-10-24 18:41:28,704 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2770 transitions. Word has length 86 [2018-10-24 18:41:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:28,705 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2770 transitions. [2018-10-24 18:41:28,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:41:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2770 transitions. [2018-10-24 18:41:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 18:41:28,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:28,722 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-24 18:41:28,722 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:28,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash -881438278, now seen corresponding path program 1 times [2018-10-24 18:41:28,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:28,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:28,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:28,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:28,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:41:29,647 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:41:29,647 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:41:29,648 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 18:41:29,650 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [101], [103], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:41:29,744 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:41:29,744 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:41:31,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:41:42,477 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:41:42,479 INFO L272 AbstractInterpreter]: Visited 130 different actions 377 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:41:42,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:42,499 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:41:47,138 INFO L232 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 77.71% of their original sizes. [2018-10-24 18:41:47,139 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:43:57,562 INFO L413 sIntCurrentIteration]: We have 235 unified AI predicates [2018-10-24 18:43:57,562 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:43:57,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:43:57,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 18:43:57,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:57,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 18:43:57,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 18:43:57,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 18:43:57,566 INFO L87 Difference]: Start difference. First operand 1991 states and 2770 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 18:45:22,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:45:22,889 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:45:22,894 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:45:22,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:45:22 BoogieIcfgContainer [2018-10-24 18:45:22,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:45:22,895 INFO L168 Benchmark]: Toolchain (without parser) took 258326.94 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 588.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,896 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:45:22,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1272.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 397.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,899 INFO L168 Benchmark]: Boogie Preprocessor took 219.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,900 INFO L168 Benchmark]: RCFGBuilder took 6727.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 311.2 MB). Peak memory consumption was 311.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,901 INFO L168 Benchmark]: TraceAbstraction took 249704.21 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 255.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:22,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1272.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 397.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 219.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6727.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 311.2 MB). Peak memory consumption was 311.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249704.21 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 255.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (1991states) and FLOYD_HOARE automaton (currently 16 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (515 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 249.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 99.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 654 SDtfs, 2783 SDslu, 271 SDs, 0 SdLazy, 3527 SolverSat, 1027 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 251 GetRequests, 51 SyntacticMatches, 176 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 132.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1991occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9951665124884369 AbsIntWeakeningRatio, 0.1148936170212766 AbsIntAvgWeakeningVarsNumRemoved, 83.65531914893617 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 341555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 36/123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown