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/Problem17_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:13:57,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:13:57,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:13:57,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:13:57,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:13:57,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:13:57,475 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:13:57,477 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:13:57,479 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:13:57,480 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:13:57,481 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:13:57,481 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:13:57,482 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:13:57,483 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:13:57,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:13:57,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:13:57,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:13:57,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:13:57,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:13:57,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:13:57,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:13:57,502 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:13:57,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:13:57,505 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:13:57,505 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:13:57,506 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:13:57,507 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:13:57,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:13:57,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:13:57,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:13:57,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:13:57,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:13:57,513 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 22:13:57,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:13:57,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:13:57,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:13:57,530 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:13:57,530 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:13:57,531 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:13:57,531 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:13:57,531 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:13:57,531 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:13:57,531 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:13:57,531 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:13:57,532 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:13:57,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:13:57,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:13:57,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:13:57,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:13:57,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:13:57,534 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:13:57,534 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:13:57,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:13:57,535 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:13:57,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:13:57,535 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:13:57,535 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:13:57,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:13:57,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:13:57,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:13:57,536 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:13:57,536 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:13:57,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:13:57,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:13:57,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:13:57,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:13:57,605 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:13:57,605 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-10-24 22:13:57,671 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba3104599/2979556cc9f84ed2b37f04fc28d3e7de/FLAG950919b53 [2018-10-24 22:13:58,355 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:13:58,356 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-10-24 22:13:58,380 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba3104599/2979556cc9f84ed2b37f04fc28d3e7de/FLAG950919b53 [2018-10-24 22:13:58,403 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba3104599/2979556cc9f84ed2b37f04fc28d3e7de [2018-10-24 22:13:58,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:13:58,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:13:58,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:13:58,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:13:58,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:13:58,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:58" (1/1) ... [2018-10-24 22:13:58,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20032f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:58, skipping insertion in model container [2018-10-24 22:13:58,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:58" (1/1) ... [2018-10-24 22:13:58,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:13:58,593 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:13:59,663 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:13:59,668 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:14:00,052 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:14:00,074 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:14:00,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00 WrapperNode [2018-10-24 22:14:00,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:14:00,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:14:00,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:14:00,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:14:00,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:14:00,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:14:00,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:14:00,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:14:00,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (1/1) ... [2018-10-24 22:14:00,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:14:00,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:14:00,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:14:00,888 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:14:00,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (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 22:14:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:14:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:14:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:14:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:14:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:14:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:14:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:14:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:14:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:14:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:14:15,737 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:14:15,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:15 BoogieIcfgContainer [2018-10-24 22:14:15,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:14:15,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:14:15,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:14:15,743 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:14:15,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:58" (1/3) ... [2018-10-24 22:14:15,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732258b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:15, skipping insertion in model container [2018-10-24 22:14:15,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:14:00" (2/3) ... [2018-10-24 22:14:15,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732258b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:15, skipping insertion in model container [2018-10-24 22:14:15,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:15" (3/3) ... [2018-10-24 22:14:15,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56_true-unreach-call.c [2018-10-24 22:14:15,759 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:14:15,771 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:14:15,791 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:14:15,853 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:14:15,853 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:14:15,853 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:14:15,853 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:14:15,853 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:14:15,854 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:14:15,854 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:14:15,854 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:14:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:14:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 22:14:15,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:15,907 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:14:15,910 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:15,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash -813169730, now seen corresponding path program 1 times [2018-10-24 22:14:15,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:15,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:15,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:15,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:15,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:16,457 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 22:14:16,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:14:16,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:14:16,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:16,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:14:16,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:14:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:14:16,490 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:14:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:32,992 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-10-24 22:14:32,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:14:32,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-10-24 22:14:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:33,027 INFO L225 Difference]: With dead ends: 2125 [2018-10-24 22:14:33,027 INFO L226 Difference]: Without dead ends: 1515 [2018-10-24 22:14:33,039 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 [2018-10-24 22:14:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-10-24 22:14:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-10-24 22:14:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-10-24 22:14:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-10-24 22:14:33,182 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 73 [2018-10-24 22:14:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:33,183 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-10-24 22:14:33,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:14:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-10-24 22:14:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 22:14:33,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:33,201 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:14:33,201 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:33,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:33,201 INFO L82 PathProgramCache]: Analyzing trace with hash -840736881, now seen corresponding path program 1 times [2018-10-24 22:14:33,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:33,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:33,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:33,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:33,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:33,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:14:33,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:14:33,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:33,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:14:33,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:14:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:14:33,556 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-10-24 22:14:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:43,057 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-10-24 22:14:43,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:14:43,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-24 22:14:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:43,075 INFO L225 Difference]: With dead ends: 3017 [2018-10-24 22:14:43,076 INFO L226 Difference]: Without dead ends: 1980 [2018-10-24 22:14:43,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:14:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-24 22:14:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-10-24 22:14:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-10-24 22:14:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-10-24 22:14:43,184 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 145 [2018-10-24 22:14:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:43,185 INFO L481 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-10-24 22:14:43,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:14:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-10-24 22:14:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 22:14:43,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:43,200 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:14:43,200 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:43,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1157485801, now seen corresponding path program 1 times [2018-10-24 22:14:43,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:43,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:43,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:43,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:43,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:43,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:43,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:14:43,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2018-10-24 22:14:43,620 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1182], [1190], [1194], [1196], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:14:43,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:14:43,714 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:14:45,380 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:15:03,262 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:15:03,264 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:15:03,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:15:03,278 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:15:03,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:15:03,279 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:15:03,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:15:03,297 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:15:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:15:03,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:15:32,295 WARN L179 SmtUtils]: Spent 24.32 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:15:52,678 WARN L179 SmtUtils]: Spent 16.14 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:15:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:15:53,436 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:15:58,011 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:15:58,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:16:00,579 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:16:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:16:00,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:16:00,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:16:00,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:16:00,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:16:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:16:00,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:16:00,912 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 6 states. [2018-10-24 22:17:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:06,042 INFO L93 Difference]: Finished difference Result 7543 states and 11527 transitions. [2018-10-24 22:17:06,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:17:06,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-24 22:17:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:06,087 INFO L225 Difference]: With dead ends: 7543 [2018-10-24 22:17:06,088 INFO L226 Difference]: Without dead ends: 5595 [2018-10-24 22:17:06,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=52, Invalid=183, Unknown=5, NotChecked=0, Total=240 [2018-10-24 22:17:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-24 22:17:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5553. [2018-10-24 22:17:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2018-10-24 22:17:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 8020 transitions. [2018-10-24 22:17:06,268 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 8020 transitions. Word has length 148 [2018-10-24 22:17:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:06,269 INFO L481 AbstractCegarLoop]: Abstraction has 5553 states and 8020 transitions. [2018-10-24 22:17:06,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:17:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 8020 transitions. [2018-10-24 22:17:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 22:17:06,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:06,277 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:17:06,278 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:06,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:06,278 INFO L82 PathProgramCache]: Analyzing trace with hash -792846689, now seen corresponding path program 1 times [2018-10-24 22:17:06,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:06,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:06,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:06,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:06,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:17:06,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:17:06,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:17:06,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:06,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:17:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:17:06,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:17:06,501 INFO L87 Difference]: Start difference. First operand 5553 states and 8020 transitions. Second operand 6 states. [2018-10-24 22:17:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:13,981 INFO L93 Difference]: Finished difference Result 13860 states and 20332 transitions. [2018-10-24 22:17:13,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:17:13,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-24 22:17:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:14,035 INFO L225 Difference]: With dead ends: 13860 [2018-10-24 22:17:14,036 INFO L226 Difference]: Without dead ends: 8313 [2018-10-24 22:17:14,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:17:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2018-10-24 22:17:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 8247. [2018-10-24 22:17:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8247 states. [2018-10-24 22:17:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8247 states to 8247 states and 10564 transitions. [2018-10-24 22:17:14,282 INFO L78 Accepts]: Start accepts. Automaton has 8247 states and 10564 transitions. Word has length 153 [2018-10-24 22:17:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:14,282 INFO L481 AbstractCegarLoop]: Abstraction has 8247 states and 10564 transitions. [2018-10-24 22:17:14,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:17:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8247 states and 10564 transitions. [2018-10-24 22:17:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 22:17:14,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:14,291 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:17:14,291 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:14,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1851802376, now seen corresponding path program 1 times [2018-10-24 22:17:14,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:14,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:14,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:14,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:14,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 22:17:14,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:17:14,740 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:17:14,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 22:17:14,741 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1182], [1190], [1194], [1196], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:17:14,750 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:17:14,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:17:16,485 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:17:42,555 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:17:42,555 INFO L272 AbstractInterpreter]: Visited 97 different actions 469 times. Merged at 7 different actions 30 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 22:17:42,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:42,566 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:17:42,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:17:42,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:17:42,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:42,583 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:17:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:42,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:17:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 22:17:42,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:17:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:17:43,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:17:43,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-24 22:17:43,844 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:17:43,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 22:17:43,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 22:17:43,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:17:43,847 INFO L87 Difference]: Start difference. First operand 8247 states and 10564 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 22:17:57,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 22:17:57,084 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:17:57,090 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:17:57,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:57 BoogieIcfgContainer [2018-10-24 22:17:57,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:17:57,091 INFO L168 Benchmark]: Toolchain (without parser) took 238670.50 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 2.0 GB in the end (delta: -525.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,092 INFO L168 Benchmark]: CDTParser took 0.22 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 22:17:57,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1652.89 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 483.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,095 INFO L168 Benchmark]: Boogie Preprocessor took 326.41 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,096 INFO L168 Benchmark]: RCFGBuilder took 14851.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.4 MB). Peak memory consumption was 473.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,097 INFO L168 Benchmark]: TraceAbstraction took 221350.22 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -213.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:17:57,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1652.89 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 483.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 326.41 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14851.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.4 MB). Peak memory consumption was 473.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221350.22 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -213.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 206). Cancelled while BasicCegarLoop was constructing difference of abstraction (8247states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (17757 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 112.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1285 SDtfs, 10843 SDslu, 1483 SDs, 0 SdLazy, 17225 SolverSat, 5164 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 105.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 765 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 57.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8247occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.4s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 606 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 60.1s InterpolantComputationTime, 1141 NumberOfCodeBlocks, 1141 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1517 ConstructedInterpolants, 240 QuantifiedInterpolants, 3451201 SizeOfPredicates, 5 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 751/954 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown