java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:04:14,304 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:04:14,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:04:14,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:04:14,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:04:14,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:04:14,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:04:14,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:04:14,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:04:14,331 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:04:14,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:04:14,333 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:04:14,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:04:14,334 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:04:14,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:04:14,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:04:14,339 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:04:14,343 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:04:14,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:04:14,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:04:14,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:04:14,359 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:04:14,364 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:04:14,372 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:04:14,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:04:14,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:04:14,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:04:14,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:04:14,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:04:14,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:04:14,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:04:14,393 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:04:14,393 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:04:14,393 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:04:14,393 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:04:14,393 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:04:14,394 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:04:14,394 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:04:14,394 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:04:14,394 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:04:14,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:04:14,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:04:14,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:04:14,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:04:14,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:04:14,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:04:14,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:04:14,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:04:14,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:04:14,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:04:14,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:04:14,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:04:14,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:04:14,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:04:14,398 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:04:14,399 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:04:14,399 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:04:14,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:04:14,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:04:14,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:04:14,469 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:04:14,470 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:04:14,470 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-10-24 22:04:14,536 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fc0d507a/7d7928a9f8404756b97dc02c1370aa0c/FLAGc0ab9808e [2018-10-24 22:04:15,317 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:04:15,318 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-10-24 22:04:15,350 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fc0d507a/7d7928a9f8404756b97dc02c1370aa0c/FLAGc0ab9808e [2018-10-24 22:04:15,370 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fc0d507a/7d7928a9f8404756b97dc02c1370aa0c [2018-10-24 22:04:15,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:04:15,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:04:15,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:04:15,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:04:15,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:04:15,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:15" (1/1) ... [2018-10-24 22:04:15,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2e66ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:15, skipping insertion in model container [2018-10-24 22:04:15,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:15" (1/1) ... [2018-10-24 22:04:15,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:04:15,544 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:04:16,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:04:16,588 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:04:16,936 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:04:16,959 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:04:16,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16 WrapperNode [2018-10-24 22:04:16,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:04:16,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:04:16,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:04:16,962 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:04:16,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:04:17,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:04:17,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:04:17,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:04:17,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... [2018-10-24 22:04:17,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:04:17,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:04:17,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:04:17,702 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:04:17,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:04:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:04:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:04:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:04:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:04:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:04:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:04:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:04:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:04:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:04:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:04:27,869 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:04:27,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:27 BoogieIcfgContainer [2018-10-24 22:04:27,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:04:27,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:04:27,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:04:27,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:04:27,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:04:15" (1/3) ... [2018-10-24 22:04:27,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202d0d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:27, skipping insertion in model container [2018-10-24 22:04:27,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:16" (2/3) ... [2018-10-24 22:04:27,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202d0d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:27, skipping insertion in model container [2018-10-24 22:04:27,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:27" (3/3) ... [2018-10-24 22:04:27,886 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00_true-unreach-call.c [2018-10-24 22:04:27,897 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:04:27,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:04:27,931 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:04:27,990 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:04:27,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:04:27,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:04:27,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:04:27,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:04:27,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:04:27,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:04:27,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:04:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:04:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 22:04:28,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:28,041 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] [2018-10-24 22:04:28,043 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:28,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1314477298, now seen corresponding path program 1 times [2018-10-24 22:04:28,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:28,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:28,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:28,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:28,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:28,546 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 22:04:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:04:28,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:04:28,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:04:28,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:04:28,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:04:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:04:28,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:04:28,604 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:04:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:04:40,203 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-24 22:04:40,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:04:40,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-24 22:04:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:04:40,244 INFO L225 Difference]: With dead ends: 2139 [2018-10-24 22:04:40,244 INFO L226 Difference]: Without dead ends: 1529 [2018-10-24 22:04:40,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:04:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-24 22:04:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-24 22:04:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-24 22:04:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-24 22:04:40,401 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 61 [2018-10-24 22:04:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:04:40,402 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-24 22:04:40,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:04:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-24 22:04:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 22:04:40,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:40,417 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:04:40,417 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:40,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:40,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1910289401, now seen corresponding path program 1 times [2018-10-24 22:04:40,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:40,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:40,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:40,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:40,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:41,089 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 22:04:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:04:41,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:04:41,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:04:41,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-10-24 22:04:41,130 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1098], [1100], [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 22:04:41,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:04:41,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:04:42,648 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:05:01,931 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:05:01,933 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:05:01,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:01,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:05:01,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:05:01,987 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:05:02,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:05:02,002 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:05:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:05:02,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:05:27,038 WARN L179 SmtUtils]: Spent 24.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:05:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:05:27,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:05:29,762 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:05:30,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:05:30,895 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:05:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:05:31,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:05:31,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-24 22:05:31,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:05:31,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:05:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:05:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:05:31,311 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-10-24 22:05:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:05:58,063 INFO L93 Difference]: Finished difference Result 5752 states and 9360 transitions. [2018-10-24 22:05:58,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:05:58,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 22:05:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:05:58,099 INFO L225 Difference]: With dead ends: 5752 [2018-10-24 22:05:58,100 INFO L226 Difference]: Without dead ends: 4231 [2018-10-24 22:05:58,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:05:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-10-24 22:05:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4198. [2018-10-24 22:05:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2018-10-24 22:05:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 6423 transitions. [2018-10-24 22:05:58,269 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 6423 transitions. Word has length 136 [2018-10-24 22:05:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:05:58,270 INFO L481 AbstractCegarLoop]: Abstraction has 4198 states and 6423 transitions. [2018-10-24 22:05:58,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:05:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 6423 transitions. [2018-10-24 22:05:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 22:05:58,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:05:58,284 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:05:58,284 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:05:58,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:58,286 INFO L82 PathProgramCache]: Analyzing trace with hash 955245470, now seen corresponding path program 1 times [2018-10-24 22:05:58,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:05:58,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:58,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:05:58,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:58,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:05:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:05:58,652 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:05:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:05:58,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:05:58,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:05:58,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:05:58,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:05:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:05:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:05:58,721 INFO L87 Difference]: Start difference. First operand 4198 states and 6423 transitions. Second operand 6 states. [2018-10-24 22:06:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:06:04,790 INFO L93 Difference]: Finished difference Result 12514 states and 20049 transitions. [2018-10-24 22:06:04,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:06:04,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 22:06:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:06:04,840 INFO L225 Difference]: With dead ends: 12514 [2018-10-24 22:06:04,841 INFO L226 Difference]: Without dead ends: 8322 [2018-10-24 22:06:04,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:06:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8322 states. [2018-10-24 22:06:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8322 to 8263. [2018-10-24 22:06:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8263 states. [2018-10-24 22:06:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 12156 transitions. [2018-10-24 22:06:05,110 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 12156 transitions. Word has length 177 [2018-10-24 22:06:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:06:05,111 INFO L481 AbstractCegarLoop]: Abstraction has 8263 states and 12156 transitions. [2018-10-24 22:06:05,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:06:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 12156 transitions. [2018-10-24 22:06:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 22:06:05,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:06:05,120 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:06:05,120 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:06:05,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash 601384290, now seen corresponding path program 1 times [2018-10-24 22:06:05,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:06:05,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:05,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:05,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:05,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:06:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:06:05,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:06:05,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 22:06:05,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:06:05,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:06:05,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:06:05,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:06:05,658 INFO L87 Difference]: Start difference. First operand 8263 states and 12156 transitions. Second operand 7 states. [2018-10-24 22:06:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:06:26,648 INFO L93 Difference]: Finished difference Result 24689 states and 41669 transitions. [2018-10-24 22:06:26,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:06:26,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2018-10-24 22:06:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:06:26,811 INFO L225 Difference]: With dead ends: 24689 [2018-10-24 22:06:26,811 INFO L226 Difference]: Without dead ends: 16432 [2018-10-24 22:06:26,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:06:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16432 states. [2018-10-24 22:06:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16432 to 16189. [2018-10-24 22:06:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16189 states. [2018-10-24 22:06:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16189 states to 16189 states and 25297 transitions. [2018-10-24 22:06:27,511 INFO L78 Accepts]: Start accepts. Automaton has 16189 states and 25297 transitions. Word has length 195 [2018-10-24 22:06:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:06:27,511 INFO L481 AbstractCegarLoop]: Abstraction has 16189 states and 25297 transitions. [2018-10-24 22:06:27,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:06:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16189 states and 25297 transitions. [2018-10-24 22:06:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 22:06:27,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:06:27,524 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:06:27,524 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:06:27,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1927103323, now seen corresponding path program 1 times [2018-10-24 22:06:27,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:06:27,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:27,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:27,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:27,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:06:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:27,829 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:06:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:06:27,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:06:27,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:06:27,905 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-24 22:06:27,906 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1098], [1100], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:06:27,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:06:27,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:06:28,863 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:06:48,402 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:06:48,402 INFO L272 AbstractInterpreter]: Visited 92 different actions 607 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:06:48,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:48,409 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:06:48,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:06:48,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:06:48,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:48,418 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:06:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:48,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:06:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:06:48,627 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:06:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:06:48,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:06:48,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 22:06:48,864 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:06:48,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:06:48,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:06:48,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:06:48,865 INFO L87 Difference]: Start difference. First operand 16189 states and 25297 transitions. Second operand 9 states. [2018-10-24 22:06:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:06:56,921 INFO L93 Difference]: Finished difference Result 38209 states and 61014 transitions. [2018-10-24 22:06:56,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:06:56,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2018-10-24 22:06:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:06:57,009 INFO L225 Difference]: With dead ends: 38209 [2018-10-24 22:06:57,009 INFO L226 Difference]: Without dead ends: 19327 [2018-10-24 22:06:57,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 436 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:06:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19327 states. [2018-10-24 22:06:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19327 to 19262. [2018-10-24 22:06:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19262 states. [2018-10-24 22:06:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19262 states to 19262 states and 25130 transitions. [2018-10-24 22:06:57,528 INFO L78 Accepts]: Start accepts. Automaton has 19262 states and 25130 transitions. Word has length 219 [2018-10-24 22:06:57,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:06:57,529 INFO L481 AbstractCegarLoop]: Abstraction has 19262 states and 25130 transitions. [2018-10-24 22:06:57,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:06:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19262 states and 25130 transitions. [2018-10-24 22:06:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 22:06:57,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:06:57,539 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:06:57,540 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:06:57,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash -452146073, now seen corresponding path program 1 times [2018-10-24 22:06:57,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:06:57,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:57,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:57,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:57,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:06:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:57,876 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:06:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 126 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 22:06:58,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:06:58,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:06:58,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 22:06:58,727 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1098], [1100], [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], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:06:58,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:06:58,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:06:59,746 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:07:21,033 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:07:21,033 INFO L272 AbstractInterpreter]: Visited 97 different actions 560 times. Merged at 7 different actions 35 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 22:07:21,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:21,038 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:07:21,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:07:21,039 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 22:07:21,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:07:21,047 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:07:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:07:21,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:07:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-24 22:07:21,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:07:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-24 22:07:21,405 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:07:21,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 22:07:21,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:21,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:07:21,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:07:21,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:07:21,407 INFO L87 Difference]: Start difference. First operand 19262 states and 25130 transitions. Second operand 3 states. [2018-10-24 22:07:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:07:26,973 INFO L93 Difference]: Finished difference Result 38967 states and 50970 transitions. [2018-10-24 22:07:26,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:07:26,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2018-10-24 22:07:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:07:27,048 INFO L225 Difference]: With dead ends: 38967 [2018-10-24 22:07:27,048 INFO L226 Difference]: Without dead ends: 19711 [2018-10-24 22:07:27,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 472 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:07:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19711 states. [2018-10-24 22:07:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19711 to 18835. [2018-10-24 22:07:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18835 states. [2018-10-24 22:07:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18835 states to 18835 states and 23939 transitions. [2018-10-24 22:07:27,504 INFO L78 Accepts]: Start accepts. Automaton has 18835 states and 23939 transitions. Word has length 236 [2018-10-24 22:07:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:07:27,505 INFO L481 AbstractCegarLoop]: Abstraction has 18835 states and 23939 transitions. [2018-10-24 22:07:27,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:07:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18835 states and 23939 transitions. [2018-10-24 22:07:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 22:07:27,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:07:27,513 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:07:27,514 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:07:27,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -684610887, now seen corresponding path program 1 times [2018-10-24 22:07:27,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:07:27,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:27,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:07:27,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:27,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:07:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:07:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 22:07:27,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:07:27,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:07:27,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:27,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:07:27,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:07:27,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:07:27,931 INFO L87 Difference]: Start difference. First operand 18835 states and 23939 transitions. Second operand 3 states. [2018-10-24 22:07:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:07:36,549 INFO L93 Difference]: Finished difference Result 52225 states and 67872 transitions. [2018-10-24 22:07:36,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:07:36,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 270 [2018-10-24 22:07:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:07:36,675 INFO L225 Difference]: With dead ends: 52225 [2018-10-24 22:07:36,676 INFO L226 Difference]: Without dead ends: 33396 [2018-10-24 22:07:36,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:07:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33396 states. [2018-10-24 22:07:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33396 to 33383. [2018-10-24 22:07:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33383 states. [2018-10-24 22:07:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33383 states to 33383 states and 42379 transitions. [2018-10-24 22:07:37,410 INFO L78 Accepts]: Start accepts. Automaton has 33383 states and 42379 transitions. Word has length 270 [2018-10-24 22:07:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:07:37,411 INFO L481 AbstractCegarLoop]: Abstraction has 33383 states and 42379 transitions. [2018-10-24 22:07:37,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:07:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33383 states and 42379 transitions. [2018-10-24 22:07:37,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-24 22:07:37,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:07:37,431 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:07:37,431 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:07:37,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash -143253662, now seen corresponding path program 1 times [2018-10-24 22:07:37,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:07:37,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:37,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:07:37,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:37,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:07:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:07:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 174 proven. 258 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:07:38,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:07:38,115 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:07:38,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-10-24 22:07:38,115 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1098], [1100], [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], [1333], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:07:38,121 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:07:38,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:07:39,714 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:07:52,124 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:07:52,124 INFO L272 AbstractInterpreter]: Visited 119 different actions 345 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:07:52,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:52,132 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:07:56,396 INFO L232 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 75.63% of their original sizes. [2018-10-24 22:07:56,396 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:08:07,868 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:08:07,872 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:08:07,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:08:07 BoogieIcfgContainer [2018-10-24 22:08:07,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:08:07,873 INFO L168 Benchmark]: Toolchain (without parser) took 232487.52 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,875 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:08:07,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1572.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 434.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,880 INFO L168 Benchmark]: Boogie Preprocessor took 305.20 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,880 INFO L168 Benchmark]: RCFGBuilder took 10170.47 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: 469.8 MB). Peak memory consumption was 469.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,881 INFO L168 Benchmark]: TraceAbstraction took 219999.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 773.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:07,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1572.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 434.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 305.20 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10170.47 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: 469.8 MB). Peak memory consumption was 469.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219999.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 773.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 170). Cancelled while BasicCegarLoop was analyzing trace of length 359 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 219.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 88.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2459 SDtfs, 14691 SDslu, 1897 SDs, 0 SdLazy, 21323 SolverSat, 5994 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 79.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1250 GetRequests, 1187 SyntacticMatches, 12 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 31.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33383occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 77.6s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9961861667744016 AbsIntWeakeningRatio, 0.09243697478991597 AbsIntAvgWeakeningVarsNumRemoved, 897.8403361344538 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 1291 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 33.0s InterpolantComputationTime, 1885 NumberOfCodeBlocks, 1885 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2463 ConstructedInterpolants, 80 QuantifiedInterpolants, 1864390 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 1423/1600 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown