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/Problem12_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:20:41,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:20:41,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:20:41,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:20:41,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:20:41,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:20:41,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:20:41,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:20:41,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:20:41,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:20:41,489 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:20:41,490 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:20:41,491 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:20:41,492 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:20:41,493 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:20:41,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:20:41,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:20:41,510 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:20:41,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:20:41,521 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:20:41,523 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:20:41,525 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:20:41,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:20:41,536 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:20:41,537 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:20:41,538 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:20:41,538 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:20:41,539 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 21:20:41,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:20:41,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:20:41,555 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:20:41,555 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:20:41,555 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:20:41,556 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:20:41,556 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:20:41,556 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:20:41,556 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:20:41,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:20:41,557 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:20:41,557 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:20:41,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:20:41,558 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:20:41,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:20:41,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:20:41,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:20:41,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:20:41,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:20:41,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:20:41,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:20:41,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:20:41,559 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:20:41,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:20:41,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:20:41,560 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:20:41,560 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:20:41,560 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:20:41,561 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:20:41,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:20:41,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:20:41,561 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:20:41,561 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:20:41,562 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:20:41,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:20:41,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:20:41,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:20:41,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:20:41,628 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:20:41,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23_true-unreach-call.c [2018-10-24 21:20:41,685 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9125001/b71fdc27e3b743e4a6b4b8a00cacab4a/FLAGa060872e9 [2018-10-24 21:20:42,497 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:20:42,498 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label23_true-unreach-call.c [2018-10-24 21:20:42,536 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9125001/b71fdc27e3b743e4a6b4b8a00cacab4a/FLAGa060872e9 [2018-10-24 21:20:42,552 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9125001/b71fdc27e3b743e4a6b4b8a00cacab4a [2018-10-24 21:20:42,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:20:42,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:20:42,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:42,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:20:42,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:20:42,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:42" (1/1) ... [2018-10-24 21:20:42,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:42, skipping insertion in model container [2018-10-24 21:20:42,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:42" (1/1) ... [2018-10-24 21:20:42,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:20:42,757 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:20:44,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:44,007 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:20:44,650 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:44,684 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:20:44,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44 WrapperNode [2018-10-24 21:20:44,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:44,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:44,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:20:44,687 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:20:44,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:44,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:45,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:20:45,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:20:45,209 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:20:45,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (1/1) ... [2018-10-24 21:20:45,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:20:45,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:20:45,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:20:45,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:20:45,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (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 21:20:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:20:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:20:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:20:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:20:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:20:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:20:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:20:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:20:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:20:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:20:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:20:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:20:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:20:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:20:57,813 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:20:57,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:57 BoogieIcfgContainer [2018-10-24 21:20:57,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:20:57,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:20:57,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:20:57,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:20:57,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:20:42" (1/3) ... [2018-10-24 21:20:57,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4da01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:57, skipping insertion in model container [2018-10-24 21:20:57,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:44" (2/3) ... [2018-10-24 21:20:57,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4da01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:57, skipping insertion in model container [2018-10-24 21:20:57,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:57" (3/3) ... [2018-10-24 21:20:57,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label23_true-unreach-call.c [2018-10-24 21:20:57,833 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:20:57,848 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:20:57,869 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:20:57,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:20:57,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:20:57,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:20:57,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:20:57,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:20:57,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:20:57,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:20:57,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:20:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:20:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 21:20:57,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:57,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:20:57,983 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:57,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:57,989 INFO L82 PathProgramCache]: Analyzing trace with hash -868014412, now seen corresponding path program 1 times [2018-10-24 21:20:57,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:58,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:58,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:58,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:58,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:58,484 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:20:58,593 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 21:20:58,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:58,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:20:58,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:58,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:20:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:20:58,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:58,642 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:21:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:06,700 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:21:06,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:21:06,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-10-24 21:21:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:06,749 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:21:06,749 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:21:06,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:21:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:21:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:21:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:21:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-10-24 21:21:06,945 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 42 [2018-10-24 21:21:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:06,945 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-10-24 21:21:06,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:21:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-10-24 21:21:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 21:21:06,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:06,959 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:06,960 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:06,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:06,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1913612190, now seen corresponding path program 1 times [2018-10-24 21:21:06,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:06,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:06,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:06,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:06,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:07,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:07,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:21:07,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:07,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:21:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:21:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:21:07,333 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 5 states. [2018-10-24 21:21:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:22,960 INFO L93 Difference]: Finished difference Result 4873 states and 9168 transitions. [2018-10-24 21:21:22,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:21:22,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-24 21:21:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:22,997 INFO L225 Difference]: With dead ends: 4873 [2018-10-24 21:21:22,998 INFO L226 Difference]: Without dead ends: 3275 [2018-10-24 21:21:23,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-24 21:21:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-24 21:21:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-24 21:21:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5443 transitions. [2018-10-24 21:21:23,139 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5443 transitions. Word has length 112 [2018-10-24 21:21:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:23,140 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 5443 transitions. [2018-10-24 21:21:23,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:21:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5443 transitions. [2018-10-24 21:21:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 21:21:23,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:23,145 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:23,145 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:23,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash -904578762, now seen corresponding path program 1 times [2018-10-24 21:21:23,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:23,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:23,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:23,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:23,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:23,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:23,486 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:23,487 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-10-24 21:21:23,489 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2103], [2105], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:23,557 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:23,557 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:21:28,555 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:21:28,557 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:21:28,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:28,607 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:21:31,234 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 79.89% of their original sizes. [2018-10-24 21:21:31,235 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:21:43,824 INFO L413 sIntCurrentIteration]: We have 117 unified AI predicates [2018-10-24 21:21:43,824 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:21:43,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:21:43,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-24 21:21:43,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:43,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:21:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:21:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:21:43,826 INFO L87 Difference]: Start difference. First operand 3241 states and 5443 transitions. Second operand 16 states. [2018-10-24 21:22:17,837 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:24:29,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 21:24:29,686 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:24:29,692 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:24:29,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:24:29 BoogieIcfgContainer [2018-10-24 21:24:29,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:24:29,694 INFO L168 Benchmark]: Toolchain (without parser) took 227125.65 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 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,695 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:24:29,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2114.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 521.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,697 INFO L168 Benchmark]: Boogie Preprocessor took 396.70 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: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,698 INFO L168 Benchmark]: RCFGBuilder took 12208.83 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.2 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,699 INFO L168 Benchmark]: TraceAbstraction took 211877.70 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -718.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:29,708 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2114.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 521.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 396.70 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: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12208.83 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.2 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211877.70 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -718.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (3241states) and FLOYD_HOARE automaton (currently 16 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1607 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 189.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 434 SDtfs, 6312 SDslu, 390 SDs, 0 SdLazy, 8311 SolverSat, 1699 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 102.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3241occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9923865877712033 AbsIntWeakeningRatio, 0.1794871794871795 AbsIntAvgWeakeningVarsNumRemoved, 363.017094017094 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 2 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 269 ConstructedInterpolants, 0 QuantifiedInterpolants, 115921 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 54/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown