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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:17:16,275 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:17:16,277 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:17:16,296 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:17:16,296 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:17:16,297 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:17:16,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:17:16,300 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:17:16,302 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:17:16,302 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:17:16,303 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:17:16,304 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:17:16,305 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:17:16,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:17:16,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:17:16,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:17:16,308 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:17:16,310 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:17:16,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:17:16,314 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:17:16,315 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:17:16,316 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:17:16,319 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:17:16,328 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:17:16,344 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:17:16,344 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:17:16,345 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:17:16,345 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:17:16,346 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:17:16,346 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:17:16,346 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:17:16,346 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:17:16,346 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:17:16,347 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:17:16,347 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:17:16,347 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:17:16,347 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:17:16,347 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:17:16,348 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:17:16,348 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:17:16,348 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:17:16,349 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:17:16,349 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:17:16,349 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:17:16,349 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:17:16,349 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:17:16,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:17:16,350 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:17:16,350 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:17:16,350 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:17:16,350 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:16,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:17:16,351 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:17:16,351 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:17:16,351 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:17:16,351 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:17:16,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:17:16,352 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:17:16,352 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:17:16,352 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:17:16,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:17:16,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:17:16,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:17:16,420 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:17:16,420 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:17:16,421 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-10-25 00:17:16,483 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d3ee3f92/f9212a8fd384455c983082d692b0b57f/FLAG4b43bc7f3 [2018-10-25 00:17:17,174 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:17:17,175 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-10-25 00:17:17,196 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d3ee3f92/f9212a8fd384455c983082d692b0b57f/FLAG4b43bc7f3 [2018-10-25 00:17:17,213 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d3ee3f92/f9212a8fd384455c983082d692b0b57f [2018-10-25 00:17:17,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:17:17,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:17:17,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:17,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:17:17,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:17:17,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:17" (1/1) ... [2018-10-25 00:17:17,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:17, skipping insertion in model container [2018-10-25 00:17:17,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:17" (1/1) ... [2018-10-25 00:17:17,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:17:17,344 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:17:18,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:18,082 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:17:18,301 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:18,325 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:17:18,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18 WrapperNode [2018-10-25 00:17:18,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:18,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:18,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:17:18,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:17:18,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:18,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:17:18,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:17:18,622 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:17:18,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (1/1) ... [2018-10-25 00:17:18,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:17:18,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:17:18,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:17:18,771 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:17:18,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (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 [2018-10-25 00:17:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:17:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:17:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:17:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:17:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:17:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:17:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:17:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:17:23,534 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:17:23,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:23 BoogieIcfgContainer [2018-10-25 00:17:23,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:17:23,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:17:23,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:17:23,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:17:23,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:17:17" (1/3) ... [2018-10-25 00:17:23,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702aa836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:23, skipping insertion in model container [2018-10-25 00:17:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:18" (2/3) ... [2018-10-25 00:17:23,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702aa836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:23, skipping insertion in model container [2018-10-25 00:17:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:23" (3/3) ... [2018-10-25 00:17:23,545 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label41_true-unreach-call.c [2018-10-25 00:17:23,556 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:17:23,566 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:17:23,582 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:17:23,629 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:17:23,629 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:17:23,629 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:17:23,629 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:17:23,630 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:17:23,630 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:17:23,630 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:17:23,630 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:17:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:17:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 00:17:23,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:23,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:23,685 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:23,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1737651188, now seen corresponding path program 1 times [2018-10-25 00:17:23,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:23,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:23,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:24,696 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:17:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:25,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:25,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:17:25,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:25,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:17:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:17:25,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:25,176 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:17:29,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:29,093 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-10-25 00:17:29,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:17:29,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2018-10-25 00:17:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:29,125 INFO L225 Difference]: With dead ends: 1074 [2018-10-25 00:17:29,126 INFO L226 Difference]: Without dead ends: 756 [2018-10-25 00:17:29,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-10-25 00:17:29,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-10-25 00:17:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-25 00:17:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-25 00:17:29,254 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 189 [2018-10-25 00:17:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:29,256 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-25 00:17:29,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:17:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-25 00:17:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 00:17:29,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:29,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:29,278 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:29,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:29,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1467958639, now seen corresponding path program 1 times [2018-10-25 00:17:29,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:29,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:29,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:29,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:29,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:29,664 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:17:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:29,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:29,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:17:29,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:29,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:17:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:17:29,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:17:29,985 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-10-25 00:17:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:33,542 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-10-25 00:17:33,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:17:33,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-25 00:17:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:33,553 INFO L225 Difference]: With dead ends: 1482 [2018-10-25 00:17:33,553 INFO L226 Difference]: Without dead ends: 968 [2018-10-25 00:17:33,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:17:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-25 00:17:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-10-25 00:17:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-25 00:17:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-25 00:17:33,617 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 217 [2018-10-25 00:17:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:33,617 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-25 00:17:33,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:17:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-25 00:17:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-25 00:17:33,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:33,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:33,625 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:33,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1187874820, now seen corresponding path program 1 times [2018-10-25 00:17:33,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:33,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:33,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:33,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:33,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:34,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:34,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:34,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:34,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:34,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:34,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:34,009 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-10-25 00:17:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:36,554 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-10-25 00:17:36,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:36,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-25 00:17:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:36,580 INFO L225 Difference]: With dead ends: 2535 [2018-10-25 00:17:36,580 INFO L226 Difference]: Without dead ends: 1592 [2018-10-25 00:17:36,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-10-25 00:17:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-10-25 00:17:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-10-25 00:17:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-10-25 00:17:36,660 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 235 [2018-10-25 00:17:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:36,661 INFO L481 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-10-25 00:17:36,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-10-25 00:17:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 00:17:36,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:36,671 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:36,671 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:36,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:36,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1850495347, now seen corresponding path program 1 times [2018-10-25 00:17:36,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:36,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:36,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:36,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:36,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:37,016 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:17:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:17:37,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:37,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:37,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 00:17:37,260 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:37,358 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:37,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:38,720 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:38,722 INFO L272 AbstractInterpreter]: Visited 190 different actions 190 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:17:38,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:38,766 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:40,085 INFO L232 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 73% of their original sizes. [2018-10-25 00:17:40,085 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:40,976 INFO L413 sIntCurrentIteration]: We have 250 unified AI predicates [2018-10-25 00:17:40,976 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:17:40,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:17:40,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-25 00:17:40,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:40,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 00:17:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 00:17:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:17:40,980 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 14 states. [2018-10-25 00:18:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:25,122 INFO L93 Difference]: Finished difference Result 3384 states and 5321 transitions. [2018-10-25 00:18:25,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:18:25,122 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 251 [2018-10-25 00:18:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:25,132 INFO L225 Difference]: With dead ends: 3384 [2018-10-25 00:18:25,132 INFO L226 Difference]: Without dead ends: 1800 [2018-10-25 00:18:25,138 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:18:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-25 00:18:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-10-25 00:18:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-10-25 00:18:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2720 transitions. [2018-10-25 00:18:25,187 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2720 transitions. Word has length 251 [2018-10-25 00:18:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:25,188 INFO L481 AbstractCegarLoop]: Abstraction has 1798 states and 2720 transitions. [2018-10-25 00:18:25,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-25 00:18:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2720 transitions. [2018-10-25 00:18:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-25 00:18:25,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:25,198 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:18:25,198 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:25,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:25,199 INFO L82 PathProgramCache]: Analyzing trace with hash 519379344, now seen corresponding path program 1 times [2018-10-25 00:18:25,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:25,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:25,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:25,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:25,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 69 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-25 00:18:25,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:25,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:18:25,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-25 00:18:25,422 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:18:25,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:18:25,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:18:26,785 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:18:26,786 INFO L272 AbstractInterpreter]: Visited 194 different actions 382 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:18:26,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:26,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:18:28,280 INFO L232 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 72.89% of their original sizes. [2018-10-25 00:18:28,281 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:18:28,848 INFO L413 sIntCurrentIteration]: We have 262 unified AI predicates [2018-10-25 00:18:28,848 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:18:28,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:18:28,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-25 00:18:28,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:28,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-25 00:18:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-25 00:18:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-10-25 00:18:28,851 INFO L87 Difference]: Start difference. First operand 1798 states and 2720 transitions. Second operand 21 states. [2018-10-25 00:19:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:19:45,245 INFO L93 Difference]: Finished difference Result 3596 states and 5545 transitions. [2018-10-25 00:19:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:19:45,246 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 263 [2018-10-25 00:19:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:19:45,256 INFO L225 Difference]: With dead ends: 3596 [2018-10-25 00:19:45,257 INFO L226 Difference]: Without dead ends: 2012 [2018-10-25 00:19:45,263 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2018-10-25 00:19:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2018-10-25 00:19:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 2009. [2018-10-25 00:19:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2018-10-25 00:19:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2948 transitions. [2018-10-25 00:19:45,320 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2948 transitions. Word has length 263 [2018-10-25 00:19:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:19:45,320 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 2948 transitions. [2018-10-25 00:19:45,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-25 00:19:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2948 transitions. [2018-10-25 00:19:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-25 00:19:45,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:19:45,331 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:19:45,331 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:19:45,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1300281084, now seen corresponding path program 1 times [2018-10-25 00:19:45,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:19:45,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:45,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:19:45,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:45,333 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:19:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:19:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:19:45,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:19:45,844 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:19:45,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-25 00:19:45,845 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:19:45,867 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:19:45,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:19:48,463 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:19:48,464 INFO L272 AbstractInterpreter]: Visited 194 different actions 381 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:19:48,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:48,470 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:19:52,085 INFO L232 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 84.59% of their original sizes. [2018-10-25 00:19:52,086 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:20:01,103 INFO L413 sIntCurrentIteration]: We have 272 unified AI predicates [2018-10-25 00:20:01,103 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:20:01,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:01,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-25 00:20:01,104 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:01,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 00:20:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 00:20:01,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:20:01,105 INFO L87 Difference]: Start difference. First operand 2009 states and 2948 transitions. Second operand 14 states. [2018-10-25 00:21:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:17,578 INFO L93 Difference]: Finished difference Result 5513 states and 8493 transitions. [2018-10-25 00:21:17,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:21:17,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 273 [2018-10-25 00:21:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:17,599 INFO L225 Difference]: With dead ends: 5513 [2018-10-25 00:21:17,599 INFO L226 Difference]: Without dead ends: 3929 [2018-10-25 00:21:17,609 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 277 GetRequests, 102 SyntacticMatches, 158 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-10-25 00:21:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2018-10-25 00:21:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3924. [2018-10-25 00:21:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3924 states. [2018-10-25 00:21:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5509 transitions. [2018-10-25 00:21:17,718 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5509 transitions. Word has length 273 [2018-10-25 00:21:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:17,718 INFO L481 AbstractCegarLoop]: Abstraction has 3924 states and 5509 transitions. [2018-10-25 00:21:17,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-25 00:21:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5509 transitions. [2018-10-25 00:21:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-25 00:21:17,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:17,737 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:17,737 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:17,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1107433359, now seen corresponding path program 1 times [2018-10-25 00:21:17,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:17,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:17,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:17,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:17,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:18,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:18,384 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:18,384 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-10-25 00:21:18,384 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:18,391 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:18,391 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 00:21:23,014 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 00:21:23,014 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 00:21:23,016 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 00:21:23,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:23,016 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 [2018-10-25 00:21:23,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:23,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:23,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:23,339 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 00:21:23,540 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:23,541 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:21:23,546 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:21:23,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:21:23 BoogieIcfgContainer [2018-10-25 00:21:23,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:21:23,547 INFO L168 Benchmark]: Toolchain (without parser) took 246322.29 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 533.3 MB in the end (delta: 872.3 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:23,548 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:21:23,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1098.93 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:23,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:23,550 INFO L168 Benchmark]: Boogie Preprocessor took 149.00 ms. Allocated memory is still 2.2 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. [2018-10-25 00:21:23,551 INFO L168 Benchmark]: RCFGBuilder took 4764.65 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.7 MB). Peak memory consumption was 260.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:23,552 INFO L168 Benchmark]: TraceAbstraction took 240009.62 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 533.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:23,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1098.93 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.00 ms. Allocated memory is still 2.2 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 4764.65 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.7 MB). Peak memory consumption was 260.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240009.62 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 533.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1581]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1581). Cancelled while BasicCegarLoop was analyzing trace of length 302 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 239.9s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 207.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1738 SDtfs, 7978 SDslu, 1810 SDs, 0 SdLazy, 13587 SolverSat, 1370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 156.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 820 GetRequests, 590 SyntacticMatches, 162 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3924occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.1s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9990449665427286 AbsIntWeakeningRatio, 0.28188775510204084 AbsIntAvgWeakeningVarsNumRemoved, 19.792091836734695 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 267 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1428 NumberOfCodeBlocks, 1428 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1422 ConstructedInterpolants, 0 QuantifiedInterpolants, 826302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 328/395 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown