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/Problem17_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:44:55,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:44:55,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:44:55,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:44:55,501 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:44:55,502 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:44:55,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:44:55,505 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:44:55,507 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:44:55,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:44:55,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:44:55,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:44:55,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:44:55,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:44:55,513 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:44:55,513 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:44:55,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:44:55,517 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:44:55,519 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:44:55,521 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:44:55,522 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:44:55,523 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:44:55,526 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:44:55,536 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 [2018-10-24 23:44:55,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:44:55,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:44:55,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:44:55,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:44:55,554 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:44:55,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:44:55,554 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:44:55,555 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:44:55,556 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:44:55,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:44:55,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:44:55,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:44:55,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:44:55,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:44:55,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:44:55,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:44:55,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:44:55,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:44:55,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:44:55,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:44:55,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:44:55,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:44:55,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:44:55,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:44:55,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:44:55,559 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:44:55,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:44:55,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:44:55,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:44:55,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:44:55,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:44:55,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:44:55,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:44:55,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:44:55,637 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:44:55,638 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:44:55,638 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-24 23:44:55,710 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98965b3c0/baa026a4eeba496280b87db59e83c7d6/FLAG4a295d616 [2018-10-24 23:44:56,497 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:44:56,497 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-24 23:44:56,525 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98965b3c0/baa026a4eeba496280b87db59e83c7d6/FLAG4a295d616 [2018-10-24 23:44:56,546 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98965b3c0/baa026a4eeba496280b87db59e83c7d6 [2018-10-24 23:44:56,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:44:56,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:44:56,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:44:56,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:44:56,573 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:44:56,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:44:56" (1/1) ... [2018-10-24 23:44:56,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:56, skipping insertion in model container [2018-10-24 23:44:56,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:44:56" (1/1) ... [2018-10-24 23:44:56,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:44:56,737 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:44:57,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:44:57,887 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:44:58,352 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:44:58,376 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:44:58,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58 WrapperNode [2018-10-24 23:44:58,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:44:58,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:44:58,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:44:58,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:44:58,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:58,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:58,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:44:58,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:44:58,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:44:58,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:44:58,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:58,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:58,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:58,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:59,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:59,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:59,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (1/1) ... [2018-10-24 23:44:59,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:44:59,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:44:59,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:44:59,120 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:44:59,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (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 23:44:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:44:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:44:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:44:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:44:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:44:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:44:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:44:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:44:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:44:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:45:10,614 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:45:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:10 BoogieIcfgContainer [2018-10-24 23:45:10,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:45:10,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:45:10,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:45:10,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:45:10,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:44:56" (1/3) ... [2018-10-24 23:45:10,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32810aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:10, skipping insertion in model container [2018-10-24 23:45:10,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:58" (2/3) ... [2018-10-24 23:45:10,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32810aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:10, skipping insertion in model container [2018-10-24 23:45:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:10" (3/3) ... [2018-10-24 23:45:10,625 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label04_false-unreach-call.c [2018-10-24 23:45:10,636 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:45:10,646 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:45:10,666 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:45:10,713 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:45:10,714 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:45:10,714 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:45:10,714 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:45:10,714 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:45:10,715 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:45:10,715 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:45:10,715 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:45:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 23:45:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 23:45:10,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:10,764 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] [2018-10-24 23:45:10,767 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:10,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:10,774 INFO L82 PathProgramCache]: Analyzing trace with hash -717801530, now seen corresponding path program 1 times [2018-10-24 23:45:10,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:10,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:10,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:10,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:10,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:11,276 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 23:45:11,286 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 23:45:11,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:11,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:45:11,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:11,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:45:11,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:45:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:11,316 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 23:45:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:45:22,169 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-24 23:45:22,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:45:22,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-24 23:45:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:45:22,204 INFO L225 Difference]: With dead ends: 2137 [2018-10-24 23:45:22,204 INFO L226 Difference]: Without dead ends: 1527 [2018-10-24 23:45:22,216 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 23:45:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-24 23:45:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-24 23:45:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-24 23:45:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-24 23:45:22,406 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 27 [2018-10-24 23:45:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:45:22,407 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-24 23:45:22,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:45:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-24 23:45:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 23:45:22,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:22,414 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:45:22,414 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:22,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1470772279, now seen corresponding path program 1 times [2018-10-24 23:45:22,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:22,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:22,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:22,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:22,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:22,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:22,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:45:22,846 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:22,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:45:22,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:45:22,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:45:22,849 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-24 23:45:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:45:31,869 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-24 23:45:31,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:45:31,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-24 23:45:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:45:31,895 INFO L225 Difference]: With dead ends: 4413 [2018-10-24 23:45:31,895 INFO L226 Difference]: Without dead ends: 2906 [2018-10-24 23:45:31,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:45:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-24 23:45:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-24 23:45:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-24 23:45:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-24 23:45:31,988 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 99 [2018-10-24 23:45:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:45:31,989 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-24 23:45:31,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:45:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-24 23:45:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 23:45:31,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:31,993 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:45:31,994 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:31,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash -410380975, now seen corresponding path program 1 times [2018-10-24 23:45:31,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:31,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:31,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:31,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:31,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:32,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:45:32,248 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:45:32,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-10-24 23:45:32,252 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [826], [828], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:45:32,309 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:45:32,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:45:33,902 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:45:33,903 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:45:33,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:33,949 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:45:33,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:45:33,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:45:33,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:33,963 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:45:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:34,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:02,989 WARN L179 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 23:46:23,322 WARN L179 SmtUtils]: Spent 16.11 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 23:46:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:23,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:46:24,388 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-24 23:46:24,489 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-24 23:46:28,761 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 23:46:28,831 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 23:46:31,580 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 23:46:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:31,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:46:31,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 23:46:31,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:31,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:46:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:46:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 23:46:31,997 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-10-24 23:48:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:02,189 INFO L93 Difference]: Finished difference Result 11147 states and 17004 transitions. [2018-10-24 23:48:02,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:48:02,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 23:48:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:02,241 INFO L225 Difference]: With dead ends: 11147 [2018-10-24 23:48:02,242 INFO L226 Difference]: Without dead ends: 8280 [2018-10-24 23:48:02,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.9s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 23:48:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-24 23:48:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8242. [2018-10-24 23:48:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8242 states. [2018-10-24 23:48:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 11941 transitions. [2018-10-24 23:48:02,514 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 11941 transitions. Word has length 102 [2018-10-24 23:48:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:02,514 INFO L481 AbstractCegarLoop]: Abstraction has 8242 states and 11941 transitions. [2018-10-24 23:48:02,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:48:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 11941 transitions. [2018-10-24 23:48:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 23:48:02,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:02,528 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:48:02,529 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:02,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash 242685404, now seen corresponding path program 1 times [2018-10-24 23:48:02,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:02,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:02,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:02,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:02,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:48:02,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:48:02,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:48:02,839 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:48:02,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:48:02,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:48:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:48:02,840 INFO L87 Difference]: Start difference. First operand 8242 states and 11941 transitions. Second operand 6 states. [2018-10-24 23:48:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:11,872 INFO L93 Difference]: Finished difference Result 20158 states and 29947 transitions. [2018-10-24 23:48:11,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:48:11,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-24 23:48:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:11,948 INFO L225 Difference]: With dead ends: 20158 [2018-10-24 23:48:11,948 INFO L226 Difference]: Without dead ends: 11922 [2018-10-24 23:48:11,995 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 23:48:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2018-10-24 23:48:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 11824. [2018-10-24 23:48:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11824 states. [2018-10-24 23:48:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11824 states to 11824 states and 15207 transitions. [2018-10-24 23:48:12,307 INFO L78 Accepts]: Start accepts. Automaton has 11824 states and 15207 transitions. Word has length 171 [2018-10-24 23:48:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:12,308 INFO L481 AbstractCegarLoop]: Abstraction has 11824 states and 15207 transitions. [2018-10-24 23:48:12,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:48:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11824 states and 15207 transitions. [2018-10-24 23:48:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 23:48:12,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:12,313 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:48:12,313 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:12,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:12,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1066803632, now seen corresponding path program 1 times [2018-10-24 23:48:12,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:12,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:12,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:12,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:12,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 23:48:12,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:48:12,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:48:12,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:48:12,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:48:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:48:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:48:12,670 INFO L87 Difference]: Start difference. First operand 11824 states and 15207 transitions. Second operand 4 states. [2018-10-24 23:48:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:23,320 INFO L93 Difference]: Finished difference Result 41206 states and 55180 transitions. [2018-10-24 23:48:23,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:48:23,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-24 23:48:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:23,491 INFO L225 Difference]: With dead ends: 41206 [2018-10-24 23:48:23,491 INFO L226 Difference]: Without dead ends: 29388 [2018-10-24 23:48:23,590 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 23:48:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29388 states. [2018-10-24 23:48:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29388 to 29387. [2018-10-24 23:48:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29387 states. [2018-10-24 23:48:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29387 states to 29387 states and 36988 transitions. [2018-10-24 23:48:24,381 INFO L78 Accepts]: Start accepts. Automaton has 29387 states and 36988 transitions. Word has length 191 [2018-10-24 23:48:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:24,382 INFO L481 AbstractCegarLoop]: Abstraction has 29387 states and 36988 transitions. [2018-10-24 23:48:24,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:48:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 29387 states and 36988 transitions. [2018-10-24 23:48:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 23:48:24,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:24,395 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:48:24,395 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:24,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:24,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1612335631, now seen corresponding path program 1 times [2018-10-24 23:48:24,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:24,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:24,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:24,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:24,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 23:48:25,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:25,334 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:48:25,334 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 23:48:25,335 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [826], [828], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1435], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:48:25,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:48:25,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:48:25,902 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:48:25,902 INFO L272 AbstractInterpreter]: Visited 130 different actions 259 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 23:48:25,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:25,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:48:25,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:25,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:48:25,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:25,953 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:48:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:26,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:48:26,494 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-24 23:48:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 23:48:26,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:48:26,843 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 23:48:27,480 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 23:48:29,759 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-10-24 23:48:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:48:30,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:48:30,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-24 23:48:30,106 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:48:30,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:48:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:48:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=126, Unknown=1, NotChecked=0, Total=182 [2018-10-24 23:48:30,107 INFO L87 Difference]: Start difference. First operand 29387 states and 36988 transitions. Second operand 9 states. [2018-10-24 23:49:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:49:06,914 INFO L93 Difference]: Finished difference Result 91282 states and 125659 transitions. [2018-10-24 23:49:06,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 23:49:06,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2018-10-24 23:49:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:49:07,645 INFO L225 Difference]: With dead ends: 91282 [2018-10-24 23:49:07,645 INFO L226 Difference]: Without dead ends: 61901 [2018-10-24 23:49:07,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 466 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=181, Invalid=418, Unknown=1, NotChecked=0, Total=600 [2018-10-24 23:49:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61901 states. [2018-10-24 23:49:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61901 to 60820. [2018-10-24 23:49:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60820 states. [2018-10-24 23:49:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60820 states to 60820 states and 74879 transitions. [2018-10-24 23:49:09,436 INFO L78 Accepts]: Start accepts. Automaton has 60820 states and 74879 transitions. Word has length 236 [2018-10-24 23:49:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:49:09,436 INFO L481 AbstractCegarLoop]: Abstraction has 60820 states and 74879 transitions. [2018-10-24 23:49:09,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:49:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 60820 states and 74879 transitions. [2018-10-24 23:49:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-24 23:49:09,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:49:09,458 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:49:09,458 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:49:09,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:49:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 606758432, now seen corresponding path program 1 times [2018-10-24 23:49:09,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:49:09,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:09,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:09,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:09,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:49:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:09,874 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-10-24 23:49:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 93 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 23:49:10,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:49:10,719 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:49:10,720 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 300 with the following transitions: [2018-10-24 23:49:10,721 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [826], [828], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1778], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:49:10,735 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:49:10,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:49:10,736 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 23:49:10,737 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 23:49:10,737 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 23:49:10,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:49:10,737 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:49:10,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:10,757 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:49:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:10,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:49:10,886 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 23:49:11,087 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:49:11,088 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:49:11,093 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:49:11,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:49:11 BoogieIcfgContainer [2018-10-24 23:49:11,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:49:11,094 INFO L168 Benchmark]: Toolchain (without parser) took 254533.69 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -321.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,096 INFO L168 Benchmark]: CDTParser took 1.83 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 23:49:11,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1813.42 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 481.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,098 INFO L168 Benchmark]: Boogie Preprocessor took 260.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,099 INFO L168 Benchmark]: RCFGBuilder took 11495.60 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: 456.9 MB). Peak memory consumption was 456.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,100 INFO L168 Benchmark]: TraceAbstraction took 240476.87 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 729.3 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 4.0 MB). Peak memory consumption was 733.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:11,105 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.83 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 1813.42 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 481.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 260.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11495.60 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: 456.9 MB). Peak memory consumption was 456.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240476.87 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 729.3 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 4.0 MB). Peak memory consumption was 733.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 68). Cancelled while BasicCegarLoop was analyzing trace of length 300 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 240.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 168.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1834 SDtfs, 12012 SDslu, 1986 SDs, 0 SdLazy, 23784 SolverSat, 7120 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 155.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 733 GetRequests, 675 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 61.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60820occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 1265 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 63.9s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1164 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1492 ConstructedInterpolants, 194 QuantifiedInterpolants, 2328944 SizeOfPredicates, 4 NumberOfNonLiveVariables, 686 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 477/600 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown