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/Problem10_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:25:17,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:25:17,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:25:17,077 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:25:17,077 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:25:17,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:25:17,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:25:17,083 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:25:17,084 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:25:17,086 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:25:17,087 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:25:17,087 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:25:17,090 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:25:17,091 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:25:17,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:25:17,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:25:17,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:25:17,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:25:17,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:25:17,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:25:17,112 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:25:17,113 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:25:17,116 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:25:17,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:25:17,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:25:17,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:25:17,119 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:25:17,120 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:25:17,120 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:25:17,121 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:25:17,122 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:25:17,123 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:25:17,125 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:25:17,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:25:17,149 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:25:17,151 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:25:17,154 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:25:17,154 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:25:17,154 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:25:17,154 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:25:17,155 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:25:17,156 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:25:17,156 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:25:17,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:25:17,157 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:25:17,157 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:25:17,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:25:17,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:25:17,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:25:17,158 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:25:17,158 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:25:17,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:25:17,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:25:17,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:25:17,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:25:17,159 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:25:17,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:25:17,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:25:17,160 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:25:17,160 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:25:17,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:25:17,161 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:25:17,161 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:25:17,161 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:25:17,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:25:17,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:25:17,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:25:17,242 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:25:17,243 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:25:17,244 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label24_false-unreach-call.c [2018-10-24 23:25:17,299 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55fcbea35/20f686096d1b4c1895ed32954bc30ce4/FLAG8df6c2f9e [2018-10-24 23:25:17,873 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:25:17,877 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label24_false-unreach-call.c [2018-10-24 23:25:17,894 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55fcbea35/20f686096d1b4c1895ed32954bc30ce4/FLAG8df6c2f9e [2018-10-24 23:25:17,912 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55fcbea35/20f686096d1b4c1895ed32954bc30ce4 [2018-10-24 23:25:17,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:25:17,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:25:17,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:25:17,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:25:17,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:25:17,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:25:17" (1/1) ... [2018-10-24 23:25:17,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be2feca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:17, skipping insertion in model container [2018-10-24 23:25:17,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:25:17" (1/1) ... [2018-10-24 23:25:17,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:25:18,016 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:25:18,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:25:18,446 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:25:18,543 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:25:18,560 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:25:18,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18 WrapperNode [2018-10-24 23:25:18,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:25:18,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:25:18,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:25:18,562 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:25:18,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:25:18,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:25:18,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:25:18,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:25:18,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... [2018-10-24 23:25:18,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:25:18,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:25:18,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:25:18,841 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:25:18,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:25:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:25:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:25:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:25:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:25:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:25:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:25:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:25:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:25:22,113 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:25:22,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:25:22 BoogieIcfgContainer [2018-10-24 23:25:22,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:25:22,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:25:22,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:25:22,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:25:22,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:25:17" (1/3) ... [2018-10-24 23:25:22,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0077e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:25:22, skipping insertion in model container [2018-10-24 23:25:22,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:25:18" (2/3) ... [2018-10-24 23:25:22,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0077e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:25:22, skipping insertion in model container [2018-10-24 23:25:22,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:25:22" (3/3) ... [2018-10-24 23:25:22,123 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label24_false-unreach-call.c [2018-10-24 23:25:22,133 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:25:22,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:25:22,162 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:25:22,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:25:22,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:25:22,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:25:22,201 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:25:22,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:25:22,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:25:22,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:25:22,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:25:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 23:25:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 23:25:22,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:22,236 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] [2018-10-24 23:25:22,238 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:22,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:22,244 INFO L82 PathProgramCache]: Analyzing trace with hash 823320841, now seen corresponding path program 1 times [2018-10-24 23:25:22,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:22,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:22,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:22,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:22,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:22,657 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:25:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:22,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:22,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:25:22,772 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:22,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:25:22,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:25:22,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:25:22,797 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 23:25:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:24,754 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 23:25:24,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:25:24,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-24 23:25:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:24,775 INFO L225 Difference]: With dead ends: 574 [2018-10-24 23:25:24,775 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 23:25:24,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:25:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 23:25:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 23:25:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 23:25:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-10-24 23:25:24,865 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 21 [2018-10-24 23:25:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:24,866 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-10-24 23:25:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:25:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-10-24 23:25:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 23:25:24,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:24,872 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:25:24,872 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:24,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1112402304, now seen corresponding path program 1 times [2018-10-24 23:25:24,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:24,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:24,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:24,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:24,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:25,233 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:25:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:25,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:25,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:25:25,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:25,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:25,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:25,317 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-10-24 23:25:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:27,838 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-10-24 23:25:27,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:25:27,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-10-24 23:25:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:27,857 INFO L225 Difference]: With dead ends: 1002 [2018-10-24 23:25:27,857 INFO L226 Difference]: Without dead ends: 652 [2018-10-24 23:25:27,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:25:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-10-24 23:25:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-10-24 23:25:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-10-24 23:25:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-10-24 23:25:27,927 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 91 [2018-10-24 23:25:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:27,928 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-10-24 23:25:27,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:25:27,928 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-10-24 23:25:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 23:25:27,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:27,931 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:25:27,933 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:27,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2093526668, now seen corresponding path program 1 times [2018-10-24 23:25:27,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:27,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:27,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:27,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:27,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:28,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:28,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:25:28,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:28,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:25:28,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:25:28,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:25:28,118 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-10-24 23:25:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:31,775 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-10-24 23:25:31,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:25:31,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-24 23:25:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:31,786 INFO L225 Difference]: With dead ends: 2128 [2018-10-24 23:25:31,787 INFO L226 Difference]: Without dead ends: 904 [2018-10-24 23:25:31,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:25:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-10-24 23:25:31,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-10-24 23:25:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-10-24 23:25:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-10-24 23:25:31,834 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 101 [2018-10-24 23:25:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:31,834 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-10-24 23:25:31,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:25:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-10-24 23:25:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 23:25:31,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:31,849 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:25:31,849 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:31,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:31,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1920891619, now seen corresponding path program 1 times [2018-10-24 23:25:31,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:31,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:31,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:31,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:31,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:32,128 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:25:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:25:32,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:25:32,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:25:32,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:32,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:32,168 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-10-24 23:25:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:25:33,592 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-10-24 23:25:33,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:25:33,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-24 23:25:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:25:33,603 INFO L225 Difference]: With dead ends: 2127 [2018-10-24 23:25:33,604 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 23:25:33,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:25:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 23:25:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-10-24 23:25:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-10-24 23:25:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-10-24 23:25:33,658 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 144 [2018-10-24 23:25:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:25:33,659 INFO L481 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-10-24 23:25:33,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:25:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-10-24 23:25:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 23:25:33,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:25:33,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:25:33,663 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:25:33,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1935153608, now seen corresponding path program 1 times [2018-10-24 23:25:33,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:25:33,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:33,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:25:33,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:25:33,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:25:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:25:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:25:34,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:25:34,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:25:34,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-10-24 23:25:34,204 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:25:34,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:25:34,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:25:34,804 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:25:34,805 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:25:34,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:25:34,849 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:25:35,361 INFO L232 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 72.74% of their original sizes. [2018-10-24 23:25:35,361 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:25:35,457 INFO L413 sIntCurrentIteration]: We have 191 unified AI predicates [2018-10-24 23:25:35,457 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:25:35,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:25:35,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-24 23:25:35,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:25:35,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:25:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:25:35,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:25:35,460 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 6 states. [2018-10-24 23:26:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:06,679 INFO L93 Difference]: Finished difference Result 2556 states and 3478 transitions. [2018-10-24 23:26:06,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:26:06,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-10-24 23:26:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:06,687 INFO L225 Difference]: With dead ends: 2556 [2018-10-24 23:26:06,687 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 23:26:06,691 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:26:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 23:26:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2018-10-24 23:26:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 23:26:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-10-24 23:26:06,726 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 192 [2018-10-24 23:26:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:06,727 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-10-24 23:26:06,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:26:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-10-24 23:26:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 23:26:06,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:06,733 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 23:26:06,734 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:06,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2141226182, now seen corresponding path program 1 times [2018-10-24 23:26:06,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:06,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:06,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:06,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:06,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 116 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 23:26:07,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:07,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:07,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 23:26:07,807 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:07,811 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:07,811 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:13,522 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:26:13,522 INFO L272 AbstractInterpreter]: Visited 98 different actions 391 times. Merged at 8 different actions 35 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:26:13,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:13,529 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:26:13,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:13,529 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:26:13,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:13,543 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:26:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:13,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:26:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 23:26:14,446 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:26:14,657 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 23:26:14,811 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 23:26:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 116 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 23:26:15,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:26:15,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 18 [2018-10-24 23:26:15,372 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:26:15,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 23:26:15,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 23:26:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:26:15,374 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 17 states. [2018-10-24 23:26:15,688 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2018-10-24 23:26:16,587 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-10-24 23:26:19,779 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 12 [2018-10-24 23:26:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:26:22,640 INFO L93 Difference]: Finished difference Result 3848 states and 5527 transitions. [2018-10-24 23:26:22,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 23:26:22,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 263 [2018-10-24 23:26:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:26:22,659 INFO L225 Difference]: With dead ends: 3848 [2018-10-24 23:26:22,659 INFO L226 Difference]: Without dead ends: 2646 [2018-10-24 23:26:22,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 547 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=550, Invalid=1612, Unknown=0, NotChecked=0, Total=2162 [2018-10-24 23:26:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2018-10-24 23:26:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2572. [2018-10-24 23:26:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2572 states. [2018-10-24 23:26:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3284 transitions. [2018-10-24 23:26:22,759 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3284 transitions. Word has length 263 [2018-10-24 23:26:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:26:22,761 INFO L481 AbstractCegarLoop]: Abstraction has 2572 states and 3284 transitions. [2018-10-24 23:26:22,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 23:26:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3284 transitions. [2018-10-24 23:26:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 23:26:22,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:26:22,772 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 23:26:22,772 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:26:22,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash -573304603, now seen corresponding path program 1 times [2018-10-24 23:26:22,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:26:22,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:22,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:22,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:26:22,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:26:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 133 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:26:23,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:23,611 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:26:23,611 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-10-24 23:26:23,612 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:26:23,617 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:26:23,618 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:26:30,769 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:26:30,769 INFO L272 AbstractInterpreter]: Visited 126 different actions 379 times. Merged at 8 different actions 25 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-24 23:26:30,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:26:30,775 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:26:30,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:26:30,775 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:26:30,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:26:30,784 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:26:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:26:30,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:26:31,890 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 38 [2018-10-24 23:26:32,487 WARN L179 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-10-24 23:26:32,911 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-10-24 23:26:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 277 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 23:26:33,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:26:34,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-24 23:26:34,501 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-10-24 23:26:34,867 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2018-10-24 23:26:34,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:34,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:34,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,052 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,176 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,421 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,495 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,756 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,837 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,949 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:35,990 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,084 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,240 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,401 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,446 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,587 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,799 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:36,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,325 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,571 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,780 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:37,956 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,020 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,076 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,138 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,342 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,781 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,826 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:38,936 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,255 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,297 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,375 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,469 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:39,992 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,120 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,206 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,419 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:40,891 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,399 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,489 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,533 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,664 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:41,732 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:42,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:42,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:42,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:42,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:42,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,139 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,452 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:43,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 23:26:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 52 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:26:44,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:26:44,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2018-10-24 23:26:44,313 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:26:44,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 23:26:44,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 23:26:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:26:44,315 INFO L87 Difference]: Start difference. First operand 2572 states and 3284 transitions. Second operand 18 states. [2018-10-24 23:26:51,118 WARN L179 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2018-10-24 23:26:55,584 WARN L179 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-24 23:27:03,269 WARN L179 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-24 23:27:04,302 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-10-24 23:27:04,488 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-24 23:27:08,474 WARN L179 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2018-10-24 23:27:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:27:09,890 INFO L93 Difference]: Finished difference Result 8671 states and 11717 transitions. [2018-10-24 23:27:09,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-24 23:27:09,891 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 308 [2018-10-24 23:27:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:27:09,925 INFO L225 Difference]: With dead ends: 8671 [2018-10-24 23:27:09,925 INFO L226 Difference]: Without dead ends: 6249 [2018-10-24 23:27:09,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 528 SyntacticMatches, 111 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3407 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=805, Invalid=2855, Unknown=0, NotChecked=0, Total=3660 [2018-10-24 23:27:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2018-10-24 23:27:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5959. [2018-10-24 23:27:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5959 states. [2018-10-24 23:27:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 7507 transitions. [2018-10-24 23:27:10,103 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 7507 transitions. Word has length 308 [2018-10-24 23:27:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:27:10,103 INFO L481 AbstractCegarLoop]: Abstraction has 5959 states and 7507 transitions. [2018-10-24 23:27:10,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 23:27:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 7507 transitions. [2018-10-24 23:27:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-24 23:27:10,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:27:10,122 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 23:27:10,122 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:27:10,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:27:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash -372002746, now seen corresponding path program 1 times [2018-10-24 23:27:10,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:27:10,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:27:10,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:27:10,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:27:10,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:27:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:27:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 205 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:27:10,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:27:10,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:27:10,889 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-10-24 23:27:10,889 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 23:27:10,894 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:27:10,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:27:17,287 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:27:17,288 INFO L272 AbstractInterpreter]: Visited 145 different actions 576 times. Merged at 8 different actions 32 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:27:17,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:27:17,333 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:27:17,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:27:17,334 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:27:17,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:27:17,346 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:27:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:27:17,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:28:24,955 WARN L179 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 1629 DAG size of output: 344 [2018-10-24 23:28:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 48 proven. 167 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 23:28:27,624 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:28:28,369 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-10-24 23:28:28,914 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-10-24 23:28:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:28:32,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:28:32,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 5] total 22 [2018-10-24 23:28:32,103 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:28:32,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 23:28:32,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 23:28:32,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=390, Unknown=1, NotChecked=0, Total=462 [2018-10-24 23:28:32,105 INFO L87 Difference]: Start difference. First operand 5959 states and 7507 transitions. Second operand 20 states. [2018-10-24 23:28:35,609 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~a10~0 |c_old(~a10~0)|)) (.cse1 (= c_~a12~0 0)) (.cse3 (= c_~a4~0 14))) (and .cse0 .cse1 (= c_~a19~0 |c_old(~a19~0)|) (or (let ((.cse2 (= 0 c_~a10~0))) (and (or .cse2 .cse0) (or (and (= |c_old(~a19~0)| c_~a19~0) (not (= c_~a19~0 9))) (not .cse2)))) (not .cse3) (not .cse1) (< 0 (+ c_~a1~0 13))) .cse3 (or (exists ((v_prenex_344 Int)) (let ((.cse5 (* 9 v_prenex_344))) (let ((.cse6 (div .cse5 10))) (let ((.cse4 (mod .cse6 299993))) (and (<= (+ c_~a1~0 75818) (div (+ .cse4 (- 300005)) 5)) (< .cse4 300005) (<= |c_old(~a1~0)| v_prenex_344) (<= 0 .cse5) (not (= (mod .cse4 5) 0)) (<= 0 .cse6) (<= 0 (+ .cse6 1))))))) (exists ((v_prenex_274 Int)) (let ((.cse9 (* 9 v_prenex_274))) (let ((.cse8 (div .cse9 10))) (let ((.cse7 (mod .cse8 299993))) (and (<= (+ c_~a1~0 75818) (div (+ .cse7 (- 599998)) 5)) (<= 0 (+ .cse8 1)) (<= |c_old(~a1~0)| v_prenex_274) (not (= 0 .cse7)) (not (= 0 (mod (+ .cse7 2) 5))) (< .cse7 599998) (< .cse8 0) (= (mod .cse9 10) 0)))))) (exists ((v_prenex_315 Int)) (let ((.cse11 (* 9 v_prenex_315))) (let ((.cse12 (div .cse11 10))) (let ((.cse10 (mod .cse12 299993))) (and (<= |c_old(~a1~0)| v_prenex_315) (not (= (mod .cse10 5) 0)) (= 0 .cse10) (= (mod .cse11 10) 0) (< .cse10 300005) (<= 0 (+ .cse12 1)) (<= (+ c_~a1~0 75818) (div (+ .cse10 (- 300005)) 5))))))) (exists ((v_prenex_340 Int)) (let ((.cse14 (* 9 v_prenex_340))) (let ((.cse15 (div .cse14 10))) (let ((.cse16 (+ .cse15 1))) (let ((.cse13 (mod .cse16 299993))) (and (<= |c_old(~a1~0)| v_prenex_340) (<= (+ c_~a1~0 75819) (div (+ .cse13 (- 300005)) 5)) (not (= (mod .cse14 10) 0)) (< .cse15 0) (<= 0 .cse16) (not (= 0 (mod .cse15 299993))) (= 0 (mod .cse13 5)) (< .cse14 0))))))) (exists ((v_prenex_290 Int)) (let ((.cse19 (* 9 v_prenex_290))) (let ((.cse18 (div .cse19 10))) (let ((.cse17 (mod .cse18 299993))) (and (= 0 .cse17) (<= (+ c_~a1~0 75818) (div (+ .cse17 (- 300005)) 5)) (= 0 (mod (+ .cse18 1) 299993)) (= (mod .cse19 10) 0) (not (= (mod .cse17 5) 0)) (<= |c_old(~a1~0)| v_prenex_290) (< .cse17 300005)))))) (exists ((v_prenex_309 Int)) (let ((.cse20 (* 9 v_prenex_309))) (let ((.cse23 (div .cse20 10))) (let ((.cse21 (+ .cse23 1))) (let ((.cse22 (mod .cse21 299993))) (and (< .cse20 0) (<= 0 .cse21) (<= (+ c_~a1~0 75818) (div (+ .cse22 (- 300005)) 5)) (<= |c_old(~a1~0)| v_prenex_309) (= 0 (mod .cse23 299993)) (< .cse22 300005) (not (= 0 (mod .cse22 5))) (not (= (mod .cse20 10) 0)))))))) (exists ((v_prenex_335 Int)) (let ((.cse26 (* 9 v_prenex_335))) (let ((.cse27 (div .cse26 10))) (let ((.cse25 (+ .cse27 1)) (.cse24 (mod .cse27 299993))) (and (not (= 0 (mod (+ .cse24 2) 5))) (< .cse25 0) (<= (+ c_~a1~0 75818) (div (+ .cse24 (- 599998)) 5)) (not (= 0 (mod .cse25 299993))) (= (mod .cse26 10) 0) (< .cse24 599998) (not (= 0 .cse24)) (< .cse27 0) (<= |c_old(~a1~0)| v_prenex_335)))))) (exists ((v_prenex_307 Int)) (let ((.cse30 (* 9 v_prenex_307))) (let ((.cse28 (div .cse30 10))) (let ((.cse29 (mod .cse28 299993))) (and (= 0 (mod (+ .cse28 1) 299993)) (not (= 0 (mod (+ .cse29 2) 5))) (<= (+ c_~a1~0 75818) (div (+ .cse29 (- 599998)) 5)) (< .cse29 599998) (< .cse28 0) (not (= 0 .cse29)) (= (mod .cse30 10) 0) (<= |c_old(~a1~0)| v_prenex_307)))))) (exists ((v_~a1~0_393 Int)) (let ((.cse32 (* 9 v_~a1~0_393))) (let ((.cse34 (div .cse32 10))) (let ((.cse33 (+ .cse34 1))) (let ((.cse31 (mod .cse33 299993))) (and (= 0 (mod .cse31 5)) (< .cse32 0) (not (= (mod .cse32 10) 0)) (<= 0 .cse33) (<= (+ c_~a1~0 75819) (div (+ .cse31 (- 300005)) 5)) (= 0 (mod .cse34 299993)) (<= |c_old(~a1~0)| v_~a1~0_393))))))) (exists ((v_prenex_339 Int)) (let ((.cse38 (* 9 v_prenex_339))) (let ((.cse37 (div .cse38 10))) (let ((.cse36 (+ .cse37 1))) (let ((.cse35 (mod .cse36 299993))) (and (< .cse35 599998) (< .cse36 0) (< .cse37 0) (< .cse38 0) (not (= 0 (mod (+ .cse35 2) 5))) (not (= 0 (mod .cse37 299993))) (not (= 0 .cse35)) (<= (+ c_~a1~0 75818) (div (+ .cse35 (- 599998)) 5)) (<= |c_old(~a1~0)| v_prenex_339) (not (= (mod .cse38 10) 0)))))))) (exists ((v_prenex_343 Int)) (let ((.cse40 (* 9 v_prenex_343))) (let ((.cse41 (div .cse40 10))) (let ((.cse39 (mod (+ .cse41 1) 299993))) (and (<= |c_old(~a1~0)| v_prenex_343) (<= (+ c_~a1~0 75818) (div (+ .cse39 (- 300005)) 5)) (< .cse39 300005) (< .cse40 0) (not (= 0 (mod .cse39 5))) (= 0 (mod .cse41 299993)) (not (= (mod .cse40 10) 0)) (= 0 .cse39)))))) (exists ((v_prenex_319 Int)) (let ((.cse44 (* 9 v_prenex_319))) (let ((.cse43 (div .cse44 10))) (let ((.cse42 (mod .cse43 299993))) (and (<= (+ c_~a1~0 75819) (div (+ .cse42 (- 300005)) 5)) (<= 0 (+ .cse43 1)) (<= 0 .cse43) (<= |c_old(~a1~0)| v_prenex_319) (= (mod .cse42 5) 0) (<= 0 .cse44)))))) (exists ((v_prenex_302 Int)) (let ((.cse45 (* 9 v_prenex_302))) (let ((.cse47 (div .cse45 10))) (let ((.cse48 (+ .cse47 1))) (let ((.cse46 (mod .cse48 299993))) (and (not (= (mod .cse45 10) 0)) (not (= 0 (mod .cse46 5))) (< .cse46 300005) (<= |c_old(~a1~0)| v_prenex_302) (not (= 0 (mod .cse47 299993))) (<= 0 .cse48) (<= (+ c_~a1~0 75818) (div (+ .cse46 (- 300005)) 5)) (< .cse47 0) (< .cse45 0))))))) (exists ((v_prenex_284 Int)) (let ((.cse49 (* 9 v_prenex_284))) (let ((.cse52 (div .cse49 10))) (let ((.cse50 (mod .cse52 299993)) (.cse51 (+ .cse52 1))) (and (= (mod .cse49 10) 0) (< .cse50 300005) (not (= (mod .cse50 5) 0)) (<= |c_old(~a1~0)| v_prenex_284) (= 0 .cse50) (not (= 0 (mod .cse51 299993))) (<= (+ c_~a1~0 75818) (div (+ .cse50 (- 300005)) 5)) (< .cse51 0)))))) (exists ((v_prenex_271 Int)) (let ((.cse54 (* 9 v_prenex_271))) (let ((.cse55 (div .cse54 10))) (let ((.cse53 (mod (+ .cse55 1) 299993))) (and (= 0 .cse53) (< .cse53 300005) (not (= (mod .cse54 10) 0)) (<= |c_old(~a1~0)| v_prenex_271) (not (= 0 (mod .cse55 299993))) (< .cse55 0) (<= (+ c_~a1~0 75818) (div (+ .cse53 (- 300005)) 5)) (< .cse54 0) (not (= 0 (mod .cse53 5))))))))))) is different from false Received shutdown request... [2018-10-24 23:29:19,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-24 23:29:19,969 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:29:19,974 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:29:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:29:19 BoogieIcfgContainer [2018-10-24 23:29:19,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:29:19,975 INFO L168 Benchmark]: Toolchain (without parser) took 242048.89 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -723.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:19,976 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. [2018-10-24 23:29:19,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:19,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:19,978 INFO L168 Benchmark]: Boogie Preprocessor took 85.30 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:29:19,979 INFO L168 Benchmark]: RCFGBuilder took 3273.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. [2018-10-24 23:29:19,980 INFO L168 Benchmark]: TraceAbstraction took 237858.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -70.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 23:29:19,984 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 632.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 193.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.30 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3273.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237858.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -70.8 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: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (5959states) and FLOYD_HOARE automaton (currently 28 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (1082 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 237.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 121.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 717 SDtfs, 9706 SDslu, 1344 SDs, 0 SdLazy, 14562 SolverSat, 2822 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 78.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2210 GetRequests, 1918 SyntacticMatches, 122 SemanticMatches, 170 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4332 ImplicationChecksByTransitivity, 116.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5959occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.9s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9970524240157749 AbsIntWeakeningRatio, 0.13612565445026178 AbsIntAvgWeakeningVarsNumRemoved, 15.18324607329843 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 399 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 93.3s InterpolantComputationTime, 2345 NumberOfCodeBlocks, 2345 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3229 ConstructedInterpolants, 135 QuantifiedInterpolants, 9561257 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1529 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 1825/2730 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown