java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:06:05,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:06:05,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:06:05,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:06:05,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:06:05,168 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:06:05,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:06:05,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:06:05,174 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:06:05,175 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:06:05,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:06:05,183 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:06:05,184 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:06:05,186 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:06:05,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:06:05,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:06:05,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:06:05,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:06:05,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:06:05,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:06:05,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:06:05,204 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:06:05,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:06:05,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:06:05,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:06:05,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:06:05,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:06:05,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:06:05,215 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:06:05,216 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:06:05,216 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:06:05,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:06:05,219 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:06:05,219 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:06:05,220 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:06:05,220 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:06:05,221 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:06:05,247 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:06:05,247 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:06:05,248 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:06:05,248 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:06:05,248 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:06:05,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:06:05,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:06:05,249 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:06:05,249 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:06:05,249 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:06:05,249 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:06:05,249 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:06:05,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:06:05,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:06:05,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:06:05,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:06:05,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:06:05,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:06:05,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:06:05,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:06:05,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:06:05,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:06:05,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:06:05,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:06:05,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:06:05,253 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:06:05,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:06:05,253 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:06:05,253 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:06:05,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:06:05,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:06:05,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:06:05,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:06:05,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:06:05,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:06:05,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:06:05,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:06:05,335 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:06:05,336 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:06:05,337 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-24 18:06:05,400 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2ac19544/b9d58e7ba1d64689be964b960391ed7c/FLAG06e33ea73 [2018-10-24 18:06:06,020 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:06:06,021 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-24 18:06:06,033 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2ac19544/b9d58e7ba1d64689be964b960391ed7c/FLAG06e33ea73 [2018-10-24 18:06:06,049 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2ac19544/b9d58e7ba1d64689be964b960391ed7c [2018-10-24 18:06:06,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:06:06,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:06:06,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:06:06,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:06:06,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:06:06,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:06,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06, skipping insertion in model container [2018-10-24 18:06:06,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:06,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:06:06,134 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:06:06,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:06:06,633 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:06:06,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:06:06,788 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:06:06,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06 WrapperNode [2018-10-24 18:06:06,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:06:06,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:06:06,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:06:06,790 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:06:06,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:06,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:06:07,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:06:07,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:06:07,003 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:06:07,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (1/1) ... [2018-10-24 18:06:07,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:06:07,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:06:07,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:06:07,142 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:06:07,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (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 18:06:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:06:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:06:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:06:07,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:06:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:06:07,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:06:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:06:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:06:11,060 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:06:11,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:06:11 BoogieIcfgContainer [2018-10-24 18:06:11,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:06:11,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:06:11,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:06:11,066 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:06:11,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:06:06" (1/3) ... [2018-10-24 18:06:11,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ada0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:06:11, skipping insertion in model container [2018-10-24 18:06:11,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:06:06" (2/3) ... [2018-10-24 18:06:11,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ada0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:06:11, skipping insertion in model container [2018-10-24 18:06:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:06:11" (3/3) ... [2018-10-24 18:06:11,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label28_false-unreach-call.c [2018-10-24 18:06:11,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:06:11,088 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:06:11,111 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:06:11,165 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:06:11,165 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:06:11,166 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:06:11,166 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:06:11,166 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:06:11,166 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:06:11,167 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:06:11,167 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:06:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:06:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 18:06:11,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:11,210 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:06:11,213 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:11,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1764811988, now seen corresponding path program 1 times [2018-10-24 18:06:11,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:11,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:11,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:11,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:11,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:11,665 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:06:11,720 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 18:06:11,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:06:11,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:06:11,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:06:11,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:06:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:06:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:06:11,743 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 18:06:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:06:14,202 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 18:06:14,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:06:14,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-24 18:06:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:06:14,223 INFO L225 Difference]: With dead ends: 574 [2018-10-24 18:06:14,224 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 18:06:14,231 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 18:06:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 18:06:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 18:06:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 18:06:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 18:06:14,312 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 18 [2018-10-24 18:06:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:06:14,312 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 18:06:14,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:06:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 18:06:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 18:06:14,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:14,319 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:06:14,320 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:14,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash 498515883, now seen corresponding path program 1 times [2018-10-24 18:06:14,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:14,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:14,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:14,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:14,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:06:14,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:06:14,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:06:14,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:06:14,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:06:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:06:14,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:06:14,674 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 18:06:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:06:17,726 INFO L93 Difference]: Finished difference Result 1290 states and 2315 transitions. [2018-10-24 18:06:17,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:06:17,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-24 18:06:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:06:17,735 INFO L225 Difference]: With dead ends: 1290 [2018-10-24 18:06:17,736 INFO L226 Difference]: Without dead ends: 940 [2018-10-24 18:06:17,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:06:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-10-24 18:06:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 925. [2018-10-24 18:06:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-10-24 18:06:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1443 transitions. [2018-10-24 18:06:17,806 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1443 transitions. Word has length 101 [2018-10-24 18:06:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:06:17,806 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1443 transitions. [2018-10-24 18:06:17,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:06:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1443 transitions. [2018-10-24 18:06:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 18:06:17,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:17,812 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:06:17,813 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:17,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1789374603, now seen corresponding path program 1 times [2018-10-24 18:06:17,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:17,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:17,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:17,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:17,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:06:18,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:06:18,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:06:18,186 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:06:18,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:06:18,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:06:18,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:06:18,187 INFO L87 Difference]: Start difference. First operand 925 states and 1443 transitions. Second operand 6 states. [2018-10-24 18:06:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:06:22,146 INFO L93 Difference]: Finished difference Result 2535 states and 4089 transitions. [2018-10-24 18:06:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:06:22,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 18:06:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:06:22,166 INFO L225 Difference]: With dead ends: 2535 [2018-10-24 18:06:22,166 INFO L226 Difference]: Without dead ends: 1616 [2018-10-24 18:06:22,174 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 18:06:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-10-24 18:06:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1585. [2018-10-24 18:06:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2018-10-24 18:06:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2320 transitions. [2018-10-24 18:06:22,231 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2320 transitions. Word has length 117 [2018-10-24 18:06:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:06:22,231 INFO L481 AbstractCegarLoop]: Abstraction has 1585 states and 2320 transitions. [2018-10-24 18:06:22,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:06:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2320 transitions. [2018-10-24 18:06:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 18:06:22,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:22,238 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:06:22,238 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:22,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 674683355, now seen corresponding path program 1 times [2018-10-24 18:06:22,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:22,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:22,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:22,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:22,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:06:22,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:06:22,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:06:22,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:06:22,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:06:22,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:06:22,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:06:22,495 INFO L87 Difference]: Start difference. First operand 1585 states and 2320 transitions. Second operand 6 states. [2018-10-24 18:06:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:06:23,911 INFO L93 Difference]: Finished difference Result 3506 states and 5314 transitions. [2018-10-24 18:06:23,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:06:23,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 18:06:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:06:23,926 INFO L225 Difference]: With dead ends: 3506 [2018-10-24 18:06:23,926 INFO L226 Difference]: Without dead ends: 1927 [2018-10-24 18:06:23,933 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 18:06:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2018-10-24 18:06:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1888. [2018-10-24 18:06:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2018-10-24 18:06:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2674 transitions. [2018-10-24 18:06:24,002 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2674 transitions. Word has length 141 [2018-10-24 18:06:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:06:24,002 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2674 transitions. [2018-10-24 18:06:24,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:06:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2674 transitions. [2018-10-24 18:06:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 18:06:24,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:24,010 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:06:24,011 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:24,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash 307682743, now seen corresponding path program 1 times [2018-10-24 18:06:24,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:24,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:24,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:24,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:24,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:06:24,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:06:24,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:06:24,552 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 18:06:24,555 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:06:24,639 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:06:24,639 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:06:27,352 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:06:39,695 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:06:39,698 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:06:39,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:39,743 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:06:43,158 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 76.53% of their original sizes. [2018-10-24 18:06:43,159 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:07:09,285 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 18:07:09,285 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:07:09,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:07:09,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-24 18:07:09,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:07:09,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 18:07:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 18:07:09,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:07:09,289 INFO L87 Difference]: Start difference. First operand 1888 states and 2674 transitions. Second operand 20 states. [2018-10-24 18:10:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:00,340 INFO L93 Difference]: Finished difference Result 4763 states and 6872 transitions. [2018-10-24 18:10:00,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 18:10:00,340 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 181 [2018-10-24 18:10:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:00,361 INFO L225 Difference]: With dead ends: 4763 [2018-10-24 18:10:00,361 INFO L226 Difference]: Without dead ends: 2881 [2018-10-24 18:10:00,373 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 138 SyntacticMatches, 24 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-10-24 18:10:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2018-10-24 18:10:00,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2670. [2018-10-24 18:10:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2018-10-24 18:10:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3538 transitions. [2018-10-24 18:10:00,538 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3538 transitions. Word has length 181 [2018-10-24 18:10:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:00,539 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 3538 transitions. [2018-10-24 18:10:00,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 18:10:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3538 transitions. [2018-10-24 18:10:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 18:10:00,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:00,545 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:10:00,546 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:00,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1321868351, now seen corresponding path program 1 times [2018-10-24 18:10:00,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:00,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:00,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:00,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:00,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:10:00,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:10:00,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:10:00,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 18:10:00,930 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [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], [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 18:10:00,938 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:10:00,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:10:02,315 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:10:05,282 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:10:05,283 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:10:05,284 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:10:05,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:10:05,285 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 18:10:05,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:05,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:10:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:05,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:10:05,429 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:10:05,630 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:10:05,631 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:10:05,638 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:10:05,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:10:05 BoogieIcfgContainer [2018-10-24 18:10:05,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:10:05,640 INFO L168 Benchmark]: Toolchain (without parser) took 239579.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -44.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 18:10:05,641 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:10:05,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.03 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 18:10:05,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:10:05,644 INFO L168 Benchmark]: Boogie Preprocessor took 139.01 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 18:10:05,644 INFO L168 Benchmark]: RCFGBuilder took 3919.56 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: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:10:05,645 INFO L168 Benchmark]: TraceAbstraction took 234576.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 590.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:10:05,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.03 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 212.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.01 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 3919.56 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: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234576.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 590.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 218 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 234.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 182.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 548 SDtfs, 4901 SDslu, 670 SDs, 0 SdLazy, 5433 SolverSat, 1137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 28 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2670occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9934480676328505 AbsIntWeakeningRatio, 0.14444444444444443 AbsIntAvgWeakeningVarsNumRemoved, 253.41666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 296 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 691282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 133/135 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown