java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:57:07,069 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:57:07,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:57:07,083 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:57:07,083 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:57:07,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:57:07,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:57:07,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:57:07,089 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:57:07,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:57:07,090 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:57:07,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:57:07,092 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:57:07,093 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:57:07,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:57:07,095 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:57:07,095 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:57:07,097 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:57:07,099 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:57:07,101 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:57:07,102 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:57:07,103 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:57:07,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:57:07,114 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 01:57:07,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:57:07,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:57:07,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:57:07,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:57:07,131 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:57:07,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:57:07,131 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:57:07,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:57:07,131 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:57:07,132 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:57:07,132 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:57:07,132 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:57:07,132 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:57:07,132 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:57:07,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:57:07,133 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:57:07,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:57:07,133 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:57:07,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:57:07,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:57:07,134 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:57:07,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:57:07,134 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:57:07,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:57:07,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:57:07,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:57:07,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:57:07,135 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:57:07,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:57:07,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:57:07,136 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:57:07,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:57:07,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:57:07,137 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:57:07,137 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:57:07,137 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:57:07,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:57:07,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:57:07,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:57:07,197 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:57:07,197 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:57:07,198 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-25 01:57:07,253 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da79cf617/6198a0370485426ba6842ae0cfde73aa/FLAG4bb42a272 [2018-10-25 01:57:07,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:57:07,934 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-25 01:57:07,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da79cf617/6198a0370485426ba6842ae0cfde73aa/FLAG4bb42a272 [2018-10-25 01:57:07,971 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da79cf617/6198a0370485426ba6842ae0cfde73aa [2018-10-25 01:57:07,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:57:07,984 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:57:07,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:57:07,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:57:07,990 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:57:07,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:57:07" (1/1) ... [2018-10-25 01:57:07,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9de6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:07, skipping insertion in model container [2018-10-25 01:57:07,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:57:07" (1/1) ... [2018-10-25 01:57:08,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:57:08,121 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:57:09,152 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:57:09,159 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:57:09,568 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:57:09,593 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:57:09,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09 WrapperNode [2018-10-25 01:57:09,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:57:09,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:57:09,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:57:09,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:57:09,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:09,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:57:10,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:57:10,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:57:10,043 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:57:10,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (1/1) ... [2018-10-25 01:57:10,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:57:10,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:57:10,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:57:10,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:57:10,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (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 01:57:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:57:10,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:57:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:57:10,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:57:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:57:10,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:57:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:57:10,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:57:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:57:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:57:21,423 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:57:21,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:57:21 BoogieIcfgContainer [2018-10-25 01:57:21,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:57:21,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:57:21,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:57:21,433 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:57:21,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:57:07" (1/3) ... [2018-10-25 01:57:21,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613b46e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:57:21, skipping insertion in model container [2018-10-25 01:57:21,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:57:09" (2/3) ... [2018-10-25 01:57:21,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613b46e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:57:21, skipping insertion in model container [2018-10-25 01:57:21,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:57:21" (3/3) ... [2018-10-25 01:57:21,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label19_true-unreach-call.c [2018-10-25 01:57:21,447 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:57:21,460 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:57:21,479 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:57:21,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:57:21,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:57:21,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:57:21,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:57:21,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:57:21,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:57:21,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:57:21,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:57:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:57:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-25 01:57:21,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:21,578 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:21,580 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:21,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:21,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1876496990, now seen corresponding path program 1 times [2018-10-25 01:57:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:21,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:21,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:21,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:21,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:22,161 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 01:57:22,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:57:22,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:57:22,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:22,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:57:22,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:57:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:57:22,190 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:57:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:32,982 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-25 01:57:32,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:57:32,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-25 01:57:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:33,039 INFO L225 Difference]: With dead ends: 2164 [2018-10-25 01:57:33,039 INFO L226 Difference]: Without dead ends: 1554 [2018-10-25 01:57:33,050 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 01:57:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-25 01:57:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-25 01:57:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-25 01:57:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-25 01:57:33,207 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 49 [2018-10-25 01:57:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:33,208 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-25 01:57:33,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:57:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-25 01:57:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-25 01:57:33,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:33,221 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:33,222 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:33,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:33,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1564943023, now seen corresponding path program 1 times [2018-10-25 01:57:33,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:33,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:33,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:33,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:33,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:33,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:57:33,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:57:33,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:33,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:57:33,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:57:33,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:57:33,500 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-25 01:57:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:41,101 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-25 01:57:41,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:57:41,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-25 01:57:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:41,116 INFO L225 Difference]: With dead ends: 3031 [2018-10-25 01:57:41,117 INFO L226 Difference]: Without dead ends: 1985 [2018-10-25 01:57:41,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-25 01:57:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-25 01:57:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-25 01:57:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-25 01:57:41,185 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 121 [2018-10-25 01:57:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:41,186 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-25 01:57:41,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:57:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-25 01:57:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-25 01:57:41,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:41,192 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:41,192 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:41,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:41,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1382747383, now seen corresponding path program 1 times [2018-10-25 01:57:41,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:41,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:41,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:41,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:41,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:41,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:41,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:41,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 125 with the following transitions: [2018-10-25 01:57:41,503 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:41,564 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:41,564 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:43,214 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:43,215 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:57:43,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:43,251 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:43,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:43,251 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 01:57:43,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:43,267 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:43,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:44,120 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 01:57:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:44,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:46,234 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-10-25 01:57:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:46,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:57:46,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 01:57:46,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:46,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:57:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:57:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:57:46,777 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-25 01:58:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:35,359 INFO L93 Difference]: Finished difference Result 7526 states and 12888 transitions. [2018-10-25 01:58:35,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:58:35,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-25 01:58:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:35,398 INFO L225 Difference]: With dead ends: 7526 [2018-10-25 01:58:35,398 INFO L226 Difference]: Without dead ends: 5573 [2018-10-25 01:58:35,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:58:35,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2018-10-25 01:58:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5565. [2018-10-25 01:58:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5565 states. [2018-10-25 01:58:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 8699 transitions. [2018-10-25 01:58:35,601 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 8699 transitions. Word has length 124 [2018-10-25 01:58:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:35,601 INFO L481 AbstractCegarLoop]: Abstraction has 5565 states and 8699 transitions. [2018-10-25 01:58:35,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:58:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 8699 transitions. [2018-10-25 01:58:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-25 01:58:35,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:35,607 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:35,609 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:35,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1130206287, now seen corresponding path program 1 times [2018-10-25 01:58:35,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:35,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:35,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:35,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:35,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:35,980 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:58:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:58:36,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:36,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:36,336 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-25 01:58:36,336 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:36,341 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:36,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:36,626 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:36,626 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:58:36,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:36,664 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:36,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:36,664 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 01:58:36,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:36,674 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:36,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:58:36,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:58:37,323 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:58:37,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 01:58:37,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:37,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:37,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:37,325 INFO L87 Difference]: Start difference. First operand 5565 states and 8699 transitions. Second operand 3 states. [2018-10-25 01:58:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:41,466 INFO L93 Difference]: Finished difference Result 13749 states and 21463 transitions. [2018-10-25 01:58:41,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:58:41,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-10-25 01:58:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:41,510 INFO L225 Difference]: With dead ends: 13749 [2018-10-25 01:58:41,511 INFO L226 Difference]: Without dead ends: 8190 [2018-10-25 01:58:41,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 273 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2018-10-25 01:58:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 8189. [2018-10-25 01:58:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8189 states. [2018-10-25 01:58:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8189 states to 8189 states and 12048 transitions. [2018-10-25 01:58:41,761 INFO L78 Accepts]: Start accepts. Automaton has 8189 states and 12048 transitions. Word has length 137 [2018-10-25 01:58:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:41,762 INFO L481 AbstractCegarLoop]: Abstraction has 8189 states and 12048 transitions. [2018-10-25 01:58:41,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:58:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8189 states and 12048 transitions. [2018-10-25 01:58:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-25 01:58:41,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:41,767 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:41,767 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:41,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:41,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1656879347, now seen corresponding path program 1 times [2018-10-25 01:58:41,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:41,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:41,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:41,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:41,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:58:41,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:58:41,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:58:41,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:41,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:58:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:58:41,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:58:41,953 INFO L87 Difference]: Start difference. First operand 8189 states and 12048 transitions. Second operand 5 states. [2018-10-25 01:58:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:59,610 INFO L93 Difference]: Finished difference Result 25888 states and 40048 transitions. [2018-10-25 01:58:59,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:58:59,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-25 01:58:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:59,705 INFO L225 Difference]: With dead ends: 25888 [2018-10-25 01:58:59,705 INFO L226 Difference]: Without dead ends: 17705 [2018-10-25 01:58:59,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2018-10-25 01:59:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17582. [2018-10-25 01:59:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17582 states. [2018-10-25 01:59:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17582 states to 17582 states and 24306 transitions. [2018-10-25 01:59:00,166 INFO L78 Accepts]: Start accepts. Automaton has 17582 states and 24306 transitions. Word has length 139 [2018-10-25 01:59:00,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:00,167 INFO L481 AbstractCegarLoop]: Abstraction has 17582 states and 24306 transitions. [2018-10-25 01:59:00,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:59:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand 17582 states and 24306 transitions. [2018-10-25 01:59:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-25 01:59:00,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:00,175 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:59:00,175 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:00,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1062053734, now seen corresponding path program 1 times [2018-10-25 01:59:00,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:00,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:00,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:00,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:00,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:00,451 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:59:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 01:59:00,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:00,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:00,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-25 01:59:00,928 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1235], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:00,935 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:00,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:02,012 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:02,012 INFO L272 AbstractInterpreter]: Visited 87 different actions 247 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:02,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:02,040 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:02,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:02,040 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 01:59:02,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:02,054 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:02,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:02,321 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:02,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:02,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:59:02,588 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:02,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:59:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:59:02,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:59:02,589 INFO L87 Difference]: Start difference. First operand 17582 states and 24306 transitions. Second operand 9 states. [2018-10-25 01:59:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:11,018 INFO L93 Difference]: Finished difference Result 35242 states and 49020 transitions. [2018-10-25 01:59:11,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:59:11,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2018-10-25 01:59:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:11,068 INFO L225 Difference]: With dead ends: 35242 [2018-10-25 01:59:11,069 INFO L226 Difference]: Without dead ends: 15023 [2018-10-25 01:59:11,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 402 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:59:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15023 states. [2018-10-25 01:59:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15023 to 14551. [2018-10-25 01:59:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14551 states. [2018-10-25 01:59:11,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14551 states to 14551 states and 17068 transitions. [2018-10-25 01:59:11,387 INFO L78 Accepts]: Start accepts. Automaton has 14551 states and 17068 transitions. Word has length 202 [2018-10-25 01:59:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:11,387 INFO L481 AbstractCegarLoop]: Abstraction has 14551 states and 17068 transitions. [2018-10-25 01:59:11,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:59:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14551 states and 17068 transitions. [2018-10-25 01:59:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-25 01:59:11,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:11,397 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:59:11,397 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:11,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1393136275, now seen corresponding path program 1 times [2018-10-25 01:59:11,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:11,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:11,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:11,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:11,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:59:11,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:11,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:59:11,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:11,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:59:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:59:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:59:11,689 INFO L87 Difference]: Start difference. First operand 14551 states and 17068 transitions. Second operand 3 states. [2018-10-25 01:59:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:18,866 INFO L93 Difference]: Finished difference Result 36954 states and 44191 transitions. [2018-10-25 01:59:18,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:59:18,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-10-25 01:59:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:18,933 INFO L225 Difference]: With dead ends: 36954 [2018-10-25 01:59:18,933 INFO L226 Difference]: Without dead ends: 18953 [2018-10-25 01:59:18,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 01:59:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18953 states. [2018-10-25 01:59:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18953 to 18945. [2018-10-25 01:59:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18945 states. [2018-10-25 01:59:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18945 states to 18945 states and 22032 transitions. [2018-10-25 01:59:19,272 INFO L78 Accepts]: Start accepts. Automaton has 18945 states and 22032 transitions. Word has length 303 [2018-10-25 01:59:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:19,273 INFO L481 AbstractCegarLoop]: Abstraction has 18945 states and 22032 transitions. [2018-10-25 01:59:19,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:59:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 18945 states and 22032 transitions. [2018-10-25 01:59:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-25 01:59:19,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:19,289 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:19,289 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:19,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 741072818, now seen corresponding path program 1 times [2018-10-25 01:59:19,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:19,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:19,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:19,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:19,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:19,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:19,947 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:19,947 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-10-25 01:59:19,948 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:19,959 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:19,959 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:21,409 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:21,409 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:21,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:21,447 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:21,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:21,447 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 01:59:21,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:21,759 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:21,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:22,183 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:22,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:59:22,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 01:59:22,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:22,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:59:22,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:59:22,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:59:22,674 INFO L87 Difference]: Start difference. First operand 18945 states and 22032 transitions. Second operand 6 states. [2018-10-25 01:59:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:29,508 INFO L93 Difference]: Finished difference Result 47103 states and 55139 transitions. [2018-10-25 01:59:29,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:59:29,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 397 [2018-10-25 01:59:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:29,584 INFO L225 Difference]: With dead ends: 47103 [2018-10-25 01:59:29,584 INFO L226 Difference]: Without dead ends: 26846 [2018-10-25 01:59:29,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 793 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:59:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26846 states. [2018-10-25 01:59:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26846 to 23798. [2018-10-25 01:59:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23798 states. [2018-10-25 01:59:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23798 states to 23798 states and 27745 transitions. [2018-10-25 01:59:30,246 INFO L78 Accepts]: Start accepts. Automaton has 23798 states and 27745 transitions. Word has length 397 [2018-10-25 01:59:30,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:30,246 INFO L481 AbstractCegarLoop]: Abstraction has 23798 states and 27745 transitions. [2018-10-25 01:59:30,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:59:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 23798 states and 27745 transitions. [2018-10-25 01:59:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-25 01:59:30,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:30,270 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-25 01:59:30,270 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:30,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1829302701, now seen corresponding path program 1 times [2018-10-25 01:59:30,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:30,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:30,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:30,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:30,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-25 01:59:31,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:31,016 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:31,017 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-10-25 01:59:31,017 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1235], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:31,022 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:31,022 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:32,126 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:32,127 INFO L272 AbstractInterpreter]: Visited 186 different actions 567 times. Merged at 9 different actions 34 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 01:59:32,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:32,167 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:32,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:32,167 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 01:59:32,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:32,179 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:32,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-25 01:59:32,506 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-25 01:59:33,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:33,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2018-10-25 01:59:33,035 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:33,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 01:59:33,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 01:59:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:59:33,037 INFO L87 Difference]: Start difference. First operand 23798 states and 27745 transitions. Second operand 8 states. [2018-10-25 01:59:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:48,312 INFO L93 Difference]: Finished difference Result 66994 states and 80165 transitions. [2018-10-25 01:59:48,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-25 01:59:48,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 477 [2018-10-25 01:59:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:48,410 INFO L225 Difference]: With dead ends: 66994 [2018-10-25 01:59:48,410 INFO L226 Difference]: Without dead ends: 39663 [2018-10-25 01:59:48,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 960 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:59:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39663 states. [2018-10-25 01:59:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39663 to 37482. [2018-10-25 01:59:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37482 states. [2018-10-25 01:59:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37482 states to 37482 states and 43612 transitions. [2018-10-25 01:59:49,530 INFO L78 Accepts]: Start accepts. Automaton has 37482 states and 43612 transitions. Word has length 477 [2018-10-25 01:59:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:49,531 INFO L481 AbstractCegarLoop]: Abstraction has 37482 states and 43612 transitions. [2018-10-25 01:59:49,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 01:59:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 37482 states and 43612 transitions. [2018-10-25 01:59:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-25 01:59:49,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:49,549 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:49,549 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:49,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:49,550 INFO L82 PathProgramCache]: Analyzing trace with hash -785519822, now seen corresponding path program 1 times [2018-10-25 01:59:49,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:49,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:49,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:49,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:49,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 138 proven. 269 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:59:50,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:50,367 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:50,367 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 484 with the following transitions: [2018-10-25 01:59:50,367 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2007], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:50,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:50,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:51,243 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:51,244 INFO L272 AbstractInterpreter]: Visited 246 different actions 493 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:59:51,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:51,281 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:51,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:51,281 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 01:59:51,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:51,294 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:51,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:52,064 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-10-25 01:59:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-25 01:59:52,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:53,094 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-10-25 01:59:53,278 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-10-25 01:59:53,487 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 01:59:53,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:59:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 132 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:59:55,139 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:55,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-10-25 01:59:55,139 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:55,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:59:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:59:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:59:55,141 INFO L87 Difference]: Start difference. First operand 37482 states and 43612 transitions. Second operand 15 states. [2018-10-25 02:00:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:00:24,348 INFO L93 Difference]: Finished difference Result 111008 states and 132908 transitions. [2018-10-25 02:00:24,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-25 02:00:24,348 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 483 [2018-10-25 02:00:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:00:24,578 INFO L225 Difference]: With dead ends: 111008 [2018-10-25 02:00:24,578 INFO L226 Difference]: Without dead ends: 69564 [2018-10-25 02:00:24,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 997 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=986, Invalid=3570, Unknown=0, NotChecked=0, Total=4556 [2018-10-25 02:00:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69564 states. [2018-10-25 02:00:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69564 to 61711. [2018-10-25 02:00:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61711 states. [2018-10-25 02:00:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61711 states to 61711 states and 72199 transitions. [2018-10-25 02:00:25,741 INFO L78 Accepts]: Start accepts. Automaton has 61711 states and 72199 transitions. Word has length 483 [2018-10-25 02:00:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:00:25,742 INFO L481 AbstractCegarLoop]: Abstraction has 61711 states and 72199 transitions. [2018-10-25 02:00:25,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 02:00:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 61711 states and 72199 transitions. [2018-10-25 02:00:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-25 02:00:25,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:00:25,761 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:25,761 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:00:25,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:00:25,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1084349436, now seen corresponding path program 1 times [2018-10-25 02:00:25,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:00:25,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:25,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:00:25,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:25,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:00:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:00:26,247 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 02:00:26,648 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 02:00:26,907 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 02:00:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 132 proven. 316 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 02:00:27,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:00:27,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:00:27,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-10-25 02:00:27,541 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1626], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2007], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:00:27,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:00:27,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:00:29,324 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:00:29,325 INFO L272 AbstractInterpreter]: Visited 246 different actions 745 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:00:29,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:00:29,355 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:00:29,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:00:29,355 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-25 02:00:29,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:00:29,367 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:00:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:00:29,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:00:31,896 WARN L179 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 232 DAG size of output: 24 [2018-10-25 02:00:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-10-25 02:00:32,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:00:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-10-25 02:00:32,380 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:00:32,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2018-10-25 02:00:32,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:32,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:00:32,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:00:32,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 02:00:32,382 INFO L87 Difference]: Start difference. First operand 61711 states and 72199 transitions. Second operand 3 states. [2018-10-25 02:00:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:00:51,895 INFO L93 Difference]: Finished difference Result 139955 states and 164754 transitions. [2018-10-25 02:00:51,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:00:51,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 526 [2018-10-25 02:00:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:00:52,574 INFO L225 Difference]: With dead ends: 139955 [2018-10-25 02:00:52,574 INFO L226 Difference]: Without dead ends: 78266 [2018-10-25 02:00:52,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1053 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 02:00:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78266 states. [2018-10-25 02:00:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78266 to 77383. [2018-10-25 02:00:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77383 states. [2018-10-25 02:00:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77383 states to 77383 states and 90308 transitions. [2018-10-25 02:00:53,740 INFO L78 Accepts]: Start accepts. Automaton has 77383 states and 90308 transitions. Word has length 526 [2018-10-25 02:00:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:00:53,741 INFO L481 AbstractCegarLoop]: Abstraction has 77383 states and 90308 transitions. [2018-10-25 02:00:53,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:00:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 77383 states and 90308 transitions. [2018-10-25 02:00:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-10-25 02:00:53,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:00:53,762 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:53,762 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:00:53,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:00:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash 979061947, now seen corresponding path program 1 times [2018-10-25 02:00:53,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:00:53,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:53,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:00:53,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:53,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:00:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:00:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-10-25 02:00:54,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:00:54,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:00:54,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:54,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:00:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:00:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:00:54,192 INFO L87 Difference]: Start difference. First operand 77383 states and 90308 transitions. Second operand 3 states. [2018-10-25 02:00:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:00:59,239 INFO L93 Difference]: Finished difference Result 183753 states and 216360 transitions. [2018-10-25 02:00:59,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:00:59,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 550 [2018-10-25 02:00:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:00:59,493 INFO L225 Difference]: With dead ends: 183753 [2018-10-25 02:00:59,493 INFO L226 Difference]: Without dead ends: 101362 [2018-10-25 02:00:59,602 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 02:00:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101362 states. [2018-10-25 02:01:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101362 to 93989. [2018-10-25 02:01:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93989 states. [2018-10-25 02:01:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93989 states to 93989 states and 108557 transitions. [2018-10-25 02:01:01,637 INFO L78 Accepts]: Start accepts. Automaton has 93989 states and 108557 transitions. Word has length 550 [2018-10-25 02:01:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 93989 states and 108557 transitions. [2018-10-25 02:01:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:01:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 93989 states and 108557 transitions. [2018-10-25 02:01:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-10-25 02:01:01,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:01,659 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:01,659 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:01,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:01,659 INFO L82 PathProgramCache]: Analyzing trace with hash 167092974, now seen corresponding path program 1 times [2018-10-25 02:01:01,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:01,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:01,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:01,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:01,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-10-25 02:01:02,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:02,128 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:01:02,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 556 with the following transitions: [2018-10-25 02:01:02,128 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1002], [1004], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1439], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:01:02,133 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:01:02,133 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 02:01:03,270 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 02:01:03,271 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 02:01:03,271 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 02:01:03,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:03,272 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:01:03,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:03,284 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:01:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:03,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:01:03,481 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 02:01:03,682 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:01:03,682 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:01:03,687 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:01:03,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:01:03 BoogieIcfgContainer [2018-10-25 02:01:03,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:01:03,689 INFO L168 Benchmark]: Toolchain (without parser) took 235706.08 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 94.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,690 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:01:03,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1608.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 447.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,692 INFO L168 Benchmark]: Boogie Preprocessor took 304.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,693 INFO L168 Benchmark]: RCFGBuilder took 11077.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,695 INFO L168 Benchmark]: TraceAbstraction took 222261.77 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 394.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 02:01:03,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1608.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 447.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 304.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11077.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222261.77 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 394.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 134). Cancelled while BasicCegarLoop was analyzing trace of length 556 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.1s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 182.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4076 SDtfs, 22971 SDslu, 3379 SDs, 0 SdLazy, 42203 SolverSat, 9677 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 162.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4908 GetRequests, 4736 SyntacticMatches, 17 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93989occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.7s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 22478 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 5854 NumberOfCodeBlocks, 5854 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8174 ConstructedInterpolants, 266 QuantifiedInterpolants, 14612898 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3762 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 5118/6159 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown