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/Problem18_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:16:27,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:16:27,464 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:16:27,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:16:27,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:16:27,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:16:27,483 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:16:27,485 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:16:27,489 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:16:27,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:16:27,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:16:27,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:16:27,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:16:27,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:16:27,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:16:27,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:16:27,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:16:27,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:16:27,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:16:27,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:16:27,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:16:27,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:16:27,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:16:27,518 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:16:27,518 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:16:27,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:16:27,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:16:27,522 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 22:16:27,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:16:27,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:16:27,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:16:27,551 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:16:27,551 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:16:27,551 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:16:27,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:16:27,552 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:16:27,552 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:16:27,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:16:27,553 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:16:27,553 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:16:27,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:16:27,554 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:16:27,554 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:16:27,554 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:16:27,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:16:27,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:16:27,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:16:27,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:16:27,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:16:27,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:16:27,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:16:27,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:16:27,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:16:27,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:16:27,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:16:27,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:16:27,558 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:16:27,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:16:27,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:16:27,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:16:27,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:16:27,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:16:27,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:16:27,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:16:27,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:16:27,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:16:27,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:16:27,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label14_true-unreach-call.c [2018-10-24 22:16:27,703 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c49a34d/93ec12f5badd4958bb9fd4631e2ebbc1/FLAG2ceea8cbe [2018-10-24 22:16:28,429 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:16:28,430 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label14_true-unreach-call.c [2018-10-24 22:16:28,461 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c49a34d/93ec12f5badd4958bb9fd4631e2ebbc1/FLAG2ceea8cbe [2018-10-24 22:16:28,479 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c49a34d/93ec12f5badd4958bb9fd4631e2ebbc1 [2018-10-24 22:16:28,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:16:28,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:16:28,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:16:28,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:16:28,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:16:28,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:16:28" (1/1) ... [2018-10-24 22:16:28,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce75194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:28, skipping insertion in model container [2018-10-24 22:16:28,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:16:28" (1/1) ... [2018-10-24 22:16:28,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:16:28,664 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:16:29,719 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:16:29,724 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:16:30,169 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:16:30,200 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:16:30,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30 WrapperNode [2018-10-24 22:16:30,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:16:30,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:16:30,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:16:30,203 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:16:30,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:16:30,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:16:30,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:16:30,616 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:16:30,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (1/1) ... [2018-10-24 22:16:30,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:16:30,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:16:30,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:16:30,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:16:30,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (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 22:16:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:16:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:16:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:16:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:16:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:16:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:16:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:16:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:16:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:16:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:16:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:16:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:16:39,255 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:16:39,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:16:39 BoogieIcfgContainer [2018-10-24 22:16:39,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:16:39,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:16:39,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:16:39,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:16:39,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:16:28" (1/3) ... [2018-10-24 22:16:39,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749dd1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:16:39, skipping insertion in model container [2018-10-24 22:16:39,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:30" (2/3) ... [2018-10-24 22:16:39,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749dd1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:16:39, skipping insertion in model container [2018-10-24 22:16:39,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:16:39" (3/3) ... [2018-10-24 22:16:39,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label14_true-unreach-call.c [2018-10-24 22:16:39,277 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:16:39,287 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:16:39,305 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:16:39,352 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:16:39,352 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:16:39,352 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:16:39,352 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:16:39,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:16:39,353 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:16:39,353 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:16:39,353 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:16:39,403 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:16:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 22:16:39,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:16:39,413 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] [2018-10-24 22:16:39,415 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:16:39,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash 939930735, now seen corresponding path program 1 times [2018-10-24 22:16:39,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:16:39,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:39,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:39,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:39,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:16:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:39,982 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 22:16:40,029 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 22:16:40,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:16:40,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:16:40,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:16:40,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:16:40,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:16:40,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:16:40,059 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:16:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:16:52,496 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:16:52,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:16:52,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-24 22:16:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:16:52,540 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:16:52,540 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:16:52,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:16:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:16:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 22:16:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 22:16:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-10-24 22:16:52,805 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 57 [2018-10-24 22:16:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:16:52,806 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-10-24 22:16:52,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:16:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-10-24 22:16:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 22:16:52,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:16:52,818 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, 1, 1, 1, 1, 1, 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 22:16:52,819 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:16:52,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:52,819 INFO L82 PathProgramCache]: Analyzing trace with hash -398672992, now seen corresponding path program 1 times [2018-10-24 22:16:52,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:16:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:52,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:52,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:16:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:16:53,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:16:53,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:16:53,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:16:53,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:16:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:16:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:16:53,140 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-10-24 22:17:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:02,129 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-10-24 22:17:02,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:17:02,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-10-24 22:17:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:02,167 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 22:17:02,167 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 22:17:02,175 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 22:17:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 22:17:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 22:17:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 22:17:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-10-24 22:17:02,338 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 127 [2018-10-24 22:17:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:02,339 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-10-24 22:17:02,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:17:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-10-24 22:17:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 22:17:02,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:02,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:02,346 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:02,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:02,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1313016153, now seen corresponding path program 1 times [2018-10-24 22:17:02,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:02,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:02,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:02,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:02,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:17:02,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:17:02,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:17:02,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:02,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:17:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:17:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:17:02,669 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-10-24 22:17:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:08,054 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-10-24 22:17:08,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:17:08,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 22:17:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:08,097 INFO L225 Difference]: With dead ends: 11002 [2018-10-24 22:17:08,097 INFO L226 Difference]: Without dead ends: 6630 [2018-10-24 22:17:08,113 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 22:17:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-24 22:17:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-24 22:17:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-24 22:17:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-10-24 22:17:08,289 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 154 [2018-10-24 22:17:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:08,290 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-10-24 22:17:08,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:17:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-10-24 22:17:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 22:17:08,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:08,297 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, 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] [2018-10-24 22:17:08,297 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:08,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:08,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1488518530, now seen corresponding path program 1 times [2018-10-24 22:17:08,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:08,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:08,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:08,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:08,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:17:08,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:17:08,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:17:08,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:08,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:17:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:17:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:17:08,621 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-10-24 22:17:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:16,671 INFO L93 Difference]: Finished difference Result 26002 states and 36762 transitions. [2018-10-24 22:17:16,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:17:16,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2018-10-24 22:17:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:16,769 INFO L225 Difference]: With dead ends: 26002 [2018-10-24 22:17:16,770 INFO L226 Difference]: Without dead ends: 19418 [2018-10-24 22:17:16,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:17:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19418 states. [2018-10-24 22:17:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19418 to 19418. [2018-10-24 22:17:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19418 states. [2018-10-24 22:17:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 25289 transitions. [2018-10-24 22:17:17,277 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 25289 transitions. Word has length 234 [2018-10-24 22:17:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:17,278 INFO L481 AbstractCegarLoop]: Abstraction has 19418 states and 25289 transitions. [2018-10-24 22:17:17,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:17:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 25289 transitions. [2018-10-24 22:17:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 22:17:17,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:17,298 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:17,298 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:17,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1516433617, now seen corresponding path program 1 times [2018-10-24 22:17:17,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:17,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:17,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:17,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:17,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 227 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 22:17:18,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:17:18,097 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:17:18,098 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-24 22:17:18,101 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1979], [1981], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2164], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:17:18,177 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:17:18,178 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:17:21,349 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:17:21,351 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:17:21,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:21,394 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:17:24,162 INFO L232 lantSequenceWeakener]: Weakened 325 states. On average, predicates are now at 77.9% of their original sizes. [2018-10-24 22:17:24,163 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:17:24,628 INFO L413 sIntCurrentIteration]: We have 335 unified AI predicates [2018-10-24 22:17:24,629 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:17:24,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:17:24,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:17:24,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:24,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:17:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:17:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:17:24,632 INFO L87 Difference]: Start difference. First operand 19418 states and 25289 transitions. Second operand 7 states. [2018-10-24 22:17:34,765 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:19:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:16,678 INFO L93 Difference]: Finished difference Result 39535 states and 51309 transitions. [2018-10-24 22:19:16,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:16,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2018-10-24 22:19:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:16,743 INFO L225 Difference]: With dead ends: 39535 [2018-10-24 22:19:16,743 INFO L226 Difference]: Without dead ends: 20123 [2018-10-24 22:19:16,793 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 336 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:19:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20123 states. [2018-10-24 22:19:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20123 to 20121. [2018-10-24 22:19:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20121 states. [2018-10-24 22:19:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20121 states to 20121 states and 26004 transitions. [2018-10-24 22:19:17,176 INFO L78 Accepts]: Start accepts. Automaton has 20121 states and 26004 transitions. Word has length 336 [2018-10-24 22:19:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:17,177 INFO L481 AbstractCegarLoop]: Abstraction has 20121 states and 26004 transitions. [2018-10-24 22:19:17,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:19:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20121 states and 26004 transitions. [2018-10-24 22:19:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-10-24 22:19:17,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:17,206 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:17,206 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:17,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:17,207 INFO L82 PathProgramCache]: Analyzing trace with hash -573143255, now seen corresponding path program 1 times [2018-10-24 22:19:17,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:17,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:17,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:17,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:17,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:17,768 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:19:17,967 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:19:18,178 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:19:18,612 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:19:19,030 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 22:19:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 264 proven. 369 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 22:19:19,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:19:19,496 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:19:19,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 520 with the following transitions: [2018-10-24 22:19:19,497 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1979], [1981], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:19:19,507 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:19:19,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:19:33,620 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:19:33,620 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:19:33,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:33,628 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:19:39,226 INFO L232 lantSequenceWeakener]: Weakened 305 states. On average, predicates are now at 78% of their original sizes. [2018-10-24 22:19:39,226 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:19:44,754 INFO L413 sIntCurrentIteration]: We have 518 unified AI predicates [2018-10-24 22:19:44,755 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:19:44,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:19:44,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-24 22:19:44,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:44,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 22:19:44,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 22:19:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 22:19:44,757 INFO L87 Difference]: Start difference. First operand 20121 states and 26004 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 22:20:07,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:20:07,495 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:20:07,500 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:20:07,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:20:07 BoogieIcfgContainer [2018-10-24 22:20:07,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:20:07,502 INFO L168 Benchmark]: Toolchain (without parser) took 219008.78 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,503 INFO L168 Benchmark]: CDTParser took 0.19 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 22:20:07,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1706.10 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 412.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,505 INFO L168 Benchmark]: Boogie Preprocessor took 234.95 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,506 INFO L168 Benchmark]: RCFGBuilder took 8405.45 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: 491.0 MB). Peak memory consumption was 491.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,507 INFO L168 Benchmark]: TraceAbstraction took 208242.43 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 2.5 GB in the end (delta: -795.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 22:20:07,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1706.10 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 412.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.95 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8405.45 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: 491.0 MB). Peak memory consumption was 491.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208242.43 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 2.5 GB in the end (delta: -795.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (20121states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (99 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 170.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2139 SDtfs, 9494 SDslu, 901 SDs, 0 SdLazy, 20562 SolverSat, 4471 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 888 GetRequests, 844 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20121occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.99663591416484 AbsIntWeakeningRatio, 0.08206330597889801 AbsIntAvgWeakeningVarsNumRemoved, 376.99296600234464 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1427 NumberOfCodeBlocks, 1427 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1421 ConstructedInterpolants, 0 QuantifiedInterpolants, 2348858 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 921/1363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown