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/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:47:16,276 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:47:16,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:47:16,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:47:16,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:47:16,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:47:16,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:47:16,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:47:16,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:47:16,300 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:47:16,301 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:47:16,301 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:47:16,302 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:47:16,303 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:47:16,304 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:47:16,305 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:47:16,306 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:47:16,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:47:16,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:47:16,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:47:16,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:47:16,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:47:16,319 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:47:16,327 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:47:16,353 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:47:16,353 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:47:16,354 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:47:16,355 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:47:16,355 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:47:16,355 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:47:16,355 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:47:16,355 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:47:16,355 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:47:16,358 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:47:16,358 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:47:16,358 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:47:16,358 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:47:16,359 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:47:16,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:47:16,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:47:16,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:47:16,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:47:16,363 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:47:16,363 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:47:16,363 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:47:16,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:47:16,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:47:16,364 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:47:16,364 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:47:16,364 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:47:16,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:47:16,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:47:16,365 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:47:16,365 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:47:16,365 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:47:16,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:47:16,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:47:16,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:47:16,454 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:47:16,455 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:47:16,455 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-10-25 01:47:16,507 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb7c272e6/e967809fabe049e9b46181b98be5c5ed/FLAGa9f917988 [2018-10-25 01:47:17,151 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:47:17,152 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-10-25 01:47:17,182 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb7c272e6/e967809fabe049e9b46181b98be5c5ed/FLAGa9f917988 [2018-10-25 01:47:17,201 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb7c272e6/e967809fabe049e9b46181b98be5c5ed [2018-10-25 01:47:17,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:47:17,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:47:17,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:47:17,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:47:17,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:47:17,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:47:17" (1/1) ... [2018-10-25 01:47:17,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:17, skipping insertion in model container [2018-10-25 01:47:17,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:47:17" (1/1) ... [2018-10-25 01:47:17,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:47:17,348 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:47:18,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:47:18,168 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:47:18,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:47:18,488 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:47:18,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18 WrapperNode [2018-10-25 01:47:18,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:47:18,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:47:18,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:47:18,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:47:18,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:18,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:18,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:47:18,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:47:18,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:47:18,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:47:18,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:18,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:18,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:18,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:19,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:19,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:19,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... [2018-10-25 01:47:19,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:47:19,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:47:19,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:47:19,104 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:47:19,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:47:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:47:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:47:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:47:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:47:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:47:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:47:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:47:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:47:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:47:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:47:26,961 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:47:26,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:47:26 BoogieIcfgContainer [2018-10-25 01:47:26,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:47:26,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:47:26,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:47:26,968 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:47:26,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:47:17" (1/3) ... [2018-10-25 01:47:26,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:47:26, skipping insertion in model container [2018-10-25 01:47:26,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:18" (2/3) ... [2018-10-25 01:47:26,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:47:26, skipping insertion in model container [2018-10-25 01:47:26,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:47:26" (3/3) ... [2018-10-25 01:47:26,972 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-10-25 01:47:26,983 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:47:26,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:47:27,012 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:47:27,054 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:47:27,055 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:47:27,055 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:47:27,055 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:47:27,055 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:47:27,056 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:47:27,056 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:47:27,056 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:47:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-25 01:47:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-25 01:47:27,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:47:27,102 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] [2018-10-25 01:47:27,104 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:47:27,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:47:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1812068772, now seen corresponding path program 1 times [2018-10-25 01:47:27,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:47:27,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:27,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:47:27,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:27,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:47:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:47:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:47:27,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:47:27,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:47:27,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:47:27,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:47:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:47:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:47:27,636 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-25 01:47:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:47:35,812 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-25 01:47:35,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:47:35,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-25 01:47:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:47:35,842 INFO L225 Difference]: With dead ends: 1514 [2018-10-25 01:47:35,842 INFO L226 Difference]: Without dead ends: 1070 [2018-10-25 01:47:35,852 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 [2018-10-25 01:47:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-25 01:47:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-25 01:47:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-25 01:47:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-25 01:47:36,018 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 38 [2018-10-25 01:47:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:47:36,019 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-25 01:47:36,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:47:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-25 01:47:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-25 01:47:36,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:47:36,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:47:36,028 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:47:36,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:47:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1548201903, now seen corresponding path program 1 times [2018-10-25 01:47:36,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:47:36,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:36,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:47:36,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:36,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:47:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:47:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:47:36,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:47:36,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:47:36,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:47:36,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:47:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:47:36,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:47:36,312 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-10-25 01:47:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:47:42,764 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-10-25 01:47:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:47:42,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-25 01:47:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:47:42,790 INFO L225 Difference]: With dead ends: 3988 [2018-10-25 01:47:42,791 INFO L226 Difference]: Without dead ends: 2926 [2018-10-25 01:47:42,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:47:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-10-25 01:47:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-10-25 01:47:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-10-25 01:47:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-10-25 01:47:42,910 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 108 [2018-10-25 01:47:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:47:42,911 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-10-25 01:47:42,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:47:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-10-25 01:47:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-25 01:47:42,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:47:42,929 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:47:42,929 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:47:42,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:47:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1266247063, now seen corresponding path program 1 times [2018-10-25 01:47:42,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:47:42,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:42,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:47:42,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:47:42,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:47:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:47:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-25 01:47:43,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:47:43,969 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:47:43,971 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-25 01:47:43,973 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:47:44,033 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:47:44,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:47:45,813 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:47:45,815 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-25 01:47:45,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:47:45,858 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:47:47,238 INFO L232 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-25 01:47:47,239 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:47:48,627 INFO L413 sIntCurrentIteration]: We have 313 unified AI predicates [2018-10-25 01:47:48,627 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:47:48,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:47:48,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-25 01:47:48,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:47:48,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:47:48,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:47:48,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:47:48,630 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 9 states. [2018-10-25 01:49:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:12,485 INFO L93 Difference]: Finished difference Result 6162 states and 8750 transitions. [2018-10-25 01:49:12,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:49:12,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-10-25 01:49:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:12,507 INFO L225 Difference]: With dead ends: 6162 [2018-10-25 01:49:12,508 INFO L226 Difference]: Without dead ends: 3555 [2018-10-25 01:49:12,520 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 319 GetRequests, 280 SyntacticMatches, 26 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:49:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2018-10-25 01:49:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3552. [2018-10-25 01:49:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2018-10-25 01:49:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4831 transitions. [2018-10-25 01:49:12,618 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4831 transitions. Word has length 314 [2018-10-25 01:49:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:12,619 INFO L481 AbstractCegarLoop]: Abstraction has 3552 states and 4831 transitions. [2018-10-25 01:49:12,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:49:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4831 transitions. [2018-10-25 01:49:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-25 01:49:12,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:12,634 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:49:12,634 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:12,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2097836364, now seen corresponding path program 1 times [2018-10-25 01:49:12,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:12,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:12,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:12,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:12,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:49:13,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:13,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:13,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-10-25 01:49:13,544 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:13,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:13,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:15,167 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:49:15,168 INFO L272 AbstractInterpreter]: Visited 284 different actions 1128 times. Merged at 7 different actions 27 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-25 01:49:15,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:15,176 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:49:15,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:15,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:49:15,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:15,186 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:49:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:15,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:49:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:49:15,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:49:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Abandoning pump threads because process wont die! [2018-10-25 01:49:16,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:49:16,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:49:16,966 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:49:16,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:49:16,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:49:16,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:49:16,968 INFO L87 Difference]: Start difference. First operand 3552 states and 4831 transitions. Second operand 9 states. [2018-10-25 01:49:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:32,732 INFO L93 Difference]: Finished difference Result 8183 states and 12318 transitions. [2018-10-25 01:49:32,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-25 01:49:32,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2018-10-25 01:49:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:32,782 INFO L225 Difference]: With dead ends: 8183 [2018-10-25 01:49:32,782 INFO L226 Difference]: Without dead ends: 5576 [2018-10-25 01:49:32,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 829 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-25 01:49:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2018-10-25 01:49:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5562. [2018-10-25 01:49:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2018-10-25 01:49:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7274 transitions. [2018-10-25 01:49:33,016 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7274 transitions. Word has length 413 [2018-10-25 01:49:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:33,017 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7274 transitions. [2018-10-25 01:49:33,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:49:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7274 transitions. [2018-10-25 01:49:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-25 01:49:33,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:33,037 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:49:33,037 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:33,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash -852894676, now seen corresponding path program 1 times [2018-10-25 01:49:33,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:33,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:33,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:33,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:33,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:49:33,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:33,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:33,874 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 436 with the following transitions: [2018-10-25 01:49:33,875 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:33,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:33,883 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:36,632 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:49:36,632 INFO L272 AbstractInterpreter]: Visited 211 different actions 1045 times. Merged at 8 different actions 37 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:49:36,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:36,668 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:49:36,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:36,668 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 [2018-10-25 01:49:36,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:36,684 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:49:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:36,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:49:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:49:37,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:49:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:49:37,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:49:37,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:49:37,549 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:49:37,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:49:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:49:37,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:49:37,550 INFO L87 Difference]: Start difference. First operand 5562 states and 7274 transitions. Second operand 9 states. [2018-10-25 01:49:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:49,465 INFO L93 Difference]: Finished difference Result 13589 states and 20980 transitions. [2018-10-25 01:49:49,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-25 01:49:49,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 435 [2018-10-25 01:49:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:49,548 INFO L225 Difference]: With dead ends: 13589 [2018-10-25 01:49:49,548 INFO L226 Difference]: Without dead ends: 8974 [2018-10-25 01:49:49,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 876 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:49:49,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2018-10-25 01:49:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 8929. [2018-10-25 01:49:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8929 states. [2018-10-25 01:49:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 12280 transitions. [2018-10-25 01:49:50,040 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 12280 transitions. Word has length 435 [2018-10-25 01:49:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:50,041 INFO L481 AbstractCegarLoop]: Abstraction has 8929 states and 12280 transitions. [2018-10-25 01:49:50,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:49:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 12280 transitions. [2018-10-25 01:49:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-10-25 01:49:50,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:50,057 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:49:50,058 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:50,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1706951362, now seen corresponding path program 1 times [2018-10-25 01:49:50,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:50,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:50,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:50,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:50,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:49:51,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:51,120 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:51,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 465 with the following transitions: [2018-10-25 01:49:51,120 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:51,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:51,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:52,041 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:49:52,041 INFO L272 AbstractInterpreter]: Visited 211 different actions 831 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-25 01:49:52,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:52,050 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:49:52,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:52,050 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 [2018-10-25 01:49:52,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:52,060 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:49:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:52,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:49:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-10-25 01:49:52,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:49:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-10-25 01:49:53,439 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:49:53,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2018-10-25 01:49:53,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:49:53,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:49:53,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:49:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:49:53,441 INFO L87 Difference]: Start difference. First operand 8929 states and 12280 transitions. Second operand 5 states. [2018-10-25 01:49:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:59,453 INFO L93 Difference]: Finished difference Result 21950 states and 32943 transitions. [2018-10-25 01:49:59,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:49:59,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2018-10-25 01:49:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:59,564 INFO L225 Difference]: With dead ends: 21950 [2018-10-25 01:49:59,564 INFO L226 Difference]: Without dead ends: 13968 [2018-10-25 01:49:59,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 921 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:49:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13968 states. [2018-10-25 01:50:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13968 to 13784. [2018-10-25 01:50:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13784 states. [2018-10-25 01:50:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13784 states to 13784 states and 18568 transitions. [2018-10-25 01:50:00,181 INFO L78 Accepts]: Start accepts. Automaton has 13784 states and 18568 transitions. Word has length 464 [2018-10-25 01:50:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:00,182 INFO L481 AbstractCegarLoop]: Abstraction has 13784 states and 18568 transitions. [2018-10-25 01:50:00,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:50:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13784 states and 18568 transitions. [2018-10-25 01:50:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-25 01:50:00,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:00,206 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:50:00,206 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:00,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:00,207 INFO L82 PathProgramCache]: Analyzing trace with hash -676226944, now seen corresponding path program 1 times [2018-10-25 01:50:00,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:00,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:00,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:00,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:00,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-25 01:50:01,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:50:01,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:50:01,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:50:01,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:50:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:50:01,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:50:01,139 INFO L87 Difference]: Start difference. First operand 13784 states and 18568 transitions. Second operand 3 states. [2018-10-25 01:50:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:04,909 INFO L93 Difference]: Finished difference Result 30138 states and 43905 transitions. [2018-10-25 01:50:04,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:50:04,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 554 [2018-10-25 01:50:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:05,026 INFO L225 Difference]: With dead ends: 30138 [2018-10-25 01:50:05,026 INFO L226 Difference]: Without dead ends: 17301 [2018-10-25 01:50:05,117 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 [2018-10-25 01:50:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17301 states. [2018-10-25 01:50:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17301 to 17299. [2018-10-25 01:50:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17299 states. [2018-10-25 01:50:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17299 states to 17299 states and 24087 transitions. [2018-10-25 01:50:05,700 INFO L78 Accepts]: Start accepts. Automaton has 17299 states and 24087 transitions. Word has length 554 [2018-10-25 01:50:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:05,702 INFO L481 AbstractCegarLoop]: Abstraction has 17299 states and 24087 transitions. [2018-10-25 01:50:05,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:50:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17299 states and 24087 transitions. [2018-10-25 01:50:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-10-25 01:50:05,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:05,748 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:50:05,749 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:05,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:05,749 INFO L82 PathProgramCache]: Analyzing trace with hash 421827042, now seen corresponding path program 1 times [2018-10-25 01:50:05,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:05,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:05,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:05,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:05,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-25 01:50:06,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:06,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:06,763 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 644 with the following transitions: [2018-10-25 01:50:06,764 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:06,768 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:06,769 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:09,305 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:09,305 INFO L272 AbstractInterpreter]: Visited 215 different actions 1287 times. Merged at 10 different actions 61 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:50:09,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:09,314 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:09,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:09,314 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:09,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:09,325 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:09,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-25 01:50:09,981 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:10,236 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:50:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-25 01:50:11,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:50:11,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 01:50:11,064 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:50:11,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:50:11,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:50:11,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:50:11,067 INFO L87 Difference]: Start difference. First operand 17299 states and 24087 transitions. Second operand 7 states. [2018-10-25 01:50:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:30,113 INFO L93 Difference]: Finished difference Result 45450 states and 66633 transitions. [2018-10-25 01:50:30,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:50:30,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2018-10-25 01:50:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:30,269 INFO L225 Difference]: With dead ends: 45450 [2018-10-25 01:50:30,269 INFO L226 Difference]: Without dead ends: 28465 [2018-10-25 01:50:30,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1301 GetRequests, 1287 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:50:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28465 states. [2018-10-25 01:50:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28465 to 28041. [2018-10-25 01:50:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28041 states. [2018-10-25 01:50:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28041 states to 28041 states and 37771 transitions. [2018-10-25 01:50:31,170 INFO L78 Accepts]: Start accepts. Automaton has 28041 states and 37771 transitions. Word has length 643 [2018-10-25 01:50:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:31,172 INFO L481 AbstractCegarLoop]: Abstraction has 28041 states and 37771 transitions. [2018-10-25 01:50:31,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:50:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 28041 states and 37771 transitions. [2018-10-25 01:50:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-25 01:50:31,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:31,214 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:50:31,215 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:31,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -342694527, now seen corresponding path program 1 times [2018-10-25 01:50:31,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:31,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:31,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-10-25 01:50:31,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:31,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:31,745 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 656 with the following transitions: [2018-10-25 01:50:31,746 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:31,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:31,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:46,871 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:46,872 INFO L272 AbstractInterpreter]: Visited 288 different actions 866 times. Merged at 9 different actions 30 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:50:46,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:46,879 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:46,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:46,879 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:46,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:46,888 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:47,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-10-25 01:50:47,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-10-25 01:50:47,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:50:47,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-25 01:50:47,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:50:47,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:50:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:50:47,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:50:47,577 INFO L87 Difference]: Start difference. First operand 28041 states and 37771 transitions. Second operand 3 states. [2018-10-25 01:50:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:50,323 INFO L93 Difference]: Finished difference Result 54574 states and 74057 transitions. [2018-10-25 01:50:50,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:50:50,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 655 [2018-10-25 01:50:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:50,483 INFO L225 Difference]: With dead ends: 54574 [2018-10-25 01:50:50,483 INFO L226 Difference]: Without dead ends: 28355 [2018-10-25 01:50:50,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1312 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:50:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28355 states. [2018-10-25 01:50:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28355 to 28037. [2018-10-25 01:50:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28037 states. [2018-10-25 01:50:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28037 states to 28037 states and 37723 transitions. [2018-10-25 01:50:51,701 INFO L78 Accepts]: Start accepts. Automaton has 28037 states and 37723 transitions. Word has length 655 [2018-10-25 01:50:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:51,702 INFO L481 AbstractCegarLoop]: Abstraction has 28037 states and 37723 transitions. [2018-10-25 01:50:51,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:50:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28037 states and 37723 transitions. [2018-10-25 01:50:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-10-25 01:50:51,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:51,757 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-25 01:50:51,758 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:51,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash 375047493, now seen corresponding path program 1 times [2018-10-25 01:50:51,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:51,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:51,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:51,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:51,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-25 01:50:52,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:52,787 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:52,787 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 687 with the following transitions: [2018-10-25 01:50:52,788 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:52,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:52,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:54,112 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:54,112 INFO L272 AbstractInterpreter]: Visited 213 different actions 1069 times. Merged at 10 different actions 51 times. Widened at 1 different actions 6 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:50:54,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:54,140 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:54,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:54,140 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:54,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:54,147 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:54,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-25 01:50:54,904 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-25 01:50:55,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:50:55,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:50:55,331 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:50:55,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:50:55,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:50:55,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:50:55,334 INFO L87 Difference]: Start difference. First operand 28037 states and 37723 transitions. Second operand 9 states. Received shutdown request... [2018-10-25 01:51:01,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:51:01,272 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:51:01,279 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:51:01,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:51:01 BoogieIcfgContainer [2018-10-25 01:51:01,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:51:01,281 INFO L168 Benchmark]: Toolchain (without parser) took 224066.68 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 58.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,282 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-25 01:51:01,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1270.91 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 412.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,285 INFO L168 Benchmark]: Boogie Preprocessor took 201.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,285 INFO L168 Benchmark]: RCFGBuilder took 7858.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 313.7 MB). Peak memory consumption was 313.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,286 INFO L168 Benchmark]: TraceAbstraction took 214316.75 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.4 GB in the end (delta: 474.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-25 01:51:01,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1270.91 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 412.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7858.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 313.7 MB). Peak memory consumption was 313.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214316.75 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.4 GB in the end (delta: 474.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (28037states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (23537 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 214.2s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 165.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2643 SDtfs, 16060 SDslu, 2667 SDs, 0 SdLazy, 26869 SolverSat, 5910 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 138.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 7023 GetRequests, 6887 SyntacticMatches, 37 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28041occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.2s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.9966131200787333 AbsIntWeakeningRatio, 0.10223642172523961 AbsIntAvgWeakeningVarsNumRemoved, 0.7603833865814696 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 1305 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 7606 NumberOfCodeBlocks, 7606 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 10880 ConstructedInterpolants, 0 QuantifiedInterpolants, 12336222 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4765 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 12452/12719 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown