java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:12:19,267 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:12:19,269 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:12:19,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:12:19,282 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:12:19,283 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:12:19,284 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:12:19,286 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:12:19,288 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:12:19,289 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:12:19,290 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:12:19,290 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:12:19,291 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:12:19,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:12:19,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:12:19,294 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:12:19,295 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:12:19,297 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:12:19,299 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:12:19,301 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:12:19,302 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:12:19,303 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:12:19,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 21:12:19,313 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:12:19,314 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:12:19,315 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:12:19,315 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:12:19,316 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:12:19,331 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:12:19,332 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:12:19,333 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:12:19,333 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:12:19,333 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:12:19,333 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:12:19,333 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:12:19,334 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:12:19,334 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:12:19,334 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:12:19,334 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:12:19,334 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:12:19,335 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:12:19,335 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:12:19,335 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:12:19,336 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:12:19,336 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:12:19,336 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:12:19,336 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:12:19,336 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:12:19,337 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:12:19,337 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:12:19,337 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:12:19,337 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:12:19,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:12:19,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:12:19,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:12:19,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:12:19,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:12:19,338 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:12:19,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:12:19,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:12:19,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:12:19,339 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:12:19,339 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:12:19,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:12:19,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:12:19,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:12:19,410 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:12:19,410 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:12:19,411 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-07 21:12:19,481 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b07da359/cb0e9989d4d94469b826e97935ec62fa/FLAG71eec535e [2018-11-07 21:12:20,297 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:12:20,298 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-07 21:12:20,326 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b07da359/cb0e9989d4d94469b826e97935ec62fa/FLAG71eec535e [2018-11-07 21:12:20,346 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b07da359/cb0e9989d4d94469b826e97935ec62fa [2018-11-07 21:12:20,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:12:20,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:12:20,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:20,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:12:20,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:12:20,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:20" (1/1) ... [2018-11-07 21:12:20,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:20, skipping insertion in model container [2018-11-07 21:12:20,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:20" (1/1) ... [2018-11-07 21:12:20,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:12:20,518 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:12:21,556 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:21,561 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:12:22,022 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:22,054 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:12:22,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22 WrapperNode [2018-11-07 21:12:22,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:22,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:22,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:12:22,056 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:12:22,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:22,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:12:22,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:12:22,392 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:12:22,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:12:22,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:12:22,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:12:22,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:12:22,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 21:12:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:12:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:12:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:12:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:12:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:12:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:12:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:12:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:12:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:12:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:12:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:12:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:12:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:12:30,136 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:12:30,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:30 BoogieIcfgContainer [2018-11-07 21:12:30,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:12:30,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:12:30,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:12:30,141 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:12:30,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:12:20" (1/3) ... [2018-11-07 21:12:30,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:30, skipping insertion in model container [2018-11-07 21:12:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22" (2/3) ... [2018-11-07 21:12:30,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:30, skipping insertion in model container [2018-11-07 21:12:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:30" (3/3) ... [2018-11-07 21:12:30,145 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label24_true-unreach-call.c [2018-11-07 21:12:30,156 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:12:30,167 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:12:30,184 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:12:30,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:12:30,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:12:30,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:12:30,234 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:12:30,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:12:30,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:12:30,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:12:30,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:12:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:12:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 21:12:30,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:30,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:30,289 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:30,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -926912268, now seen corresponding path program 1 times [2018-11-07 21:12:30,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:30,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:30,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:30,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:30,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:30,819 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:12:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:30,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:30,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:12:30,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:12:30,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:12:30,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:12:30,964 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:12:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:37,828 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:12:37,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:12:37,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-07 21:12:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:37,863 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:12:37,863 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:12:37,874 INFO L604 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 [2018-11-07 21:12:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:12:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:12:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:12:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-07 21:12:38,034 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 58 [2018-11-07 21:12:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:38,035 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-07 21:12:38,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:12:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-07 21:12:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 21:12:38,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:38,046 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:38,046 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:38,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1481566434, now seen corresponding path program 1 times [2018-11-07 21:12:38,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:38,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:38,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:38,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:38,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:38,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:38,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:38,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:38,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:38,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:38,340 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-07 21:12:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:45,996 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-07 21:12:46,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:12:46,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-11-07 21:12:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:46,024 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 21:12:46,025 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 21:12:46,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:12:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 21:12:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 21:12:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 21:12:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-07 21:12:46,135 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 128 [2018-11-07 21:12:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:46,137 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-07 21:12:46,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:12:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-07 21:12:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 21:12:46,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:46,147 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:46,147 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:46,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash -74605249, now seen corresponding path program 1 times [2018-11-07 21:12:46,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:46,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:46,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:46,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:46,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:46,465 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:12:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:46,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:46,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:46,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:46,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:46,516 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-07 21:12:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:51,872 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-07 21:12:51,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:12:51,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 21:12:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:51,906 INFO L225 Difference]: With dead ends: 7345 [2018-11-07 21:12:51,906 INFO L226 Difference]: Without dead ends: 4426 [2018-11-07 21:12:51,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:12:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-07 21:12:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-07 21:12:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-07 21:12:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-07 21:12:52,055 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 129 [2018-11-07 21:12:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:52,056 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-07 21:12:52,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:12:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-07 21:12:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 21:12:52,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:52,059 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:52,059 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:52,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:52,060 INFO L82 PathProgramCache]: Analyzing trace with hash 780877979, now seen corresponding path program 1 times [2018-11-07 21:12:52,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:52,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:52,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:52,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:52,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:52,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:52,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:52,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:52,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:52,242 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-07 21:13:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:01,198 INFO L93 Difference]: Finished difference Result 14803 states and 21960 transitions. [2018-11-07 21:13:01,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:13:01,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-11-07 21:13:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:01,253 INFO L225 Difference]: With dead ends: 14803 [2018-11-07 21:13:01,253 INFO L226 Difference]: Without dead ends: 10418 [2018-11-07 21:13:01,276 INFO L604 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 [2018-11-07 21:13:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10418 states. [2018-11-07 21:13:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10418 to 10271. [2018-11-07 21:13:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10271 states. [2018-11-07 21:13:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 13608 transitions. [2018-11-07 21:13:01,545 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 13608 transitions. Word has length 131 [2018-11-07 21:13:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:01,545 INFO L480 AbstractCegarLoop]: Abstraction has 10271 states and 13608 transitions. [2018-11-07 21:13:01,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:13:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 13608 transitions. [2018-11-07 21:13:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 21:13:01,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:01,551 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:01,551 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:01,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1032324202, now seen corresponding path program 1 times [2018-11-07 21:13:01,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:01,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:01,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:01,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:01,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:01,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:13:01,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:13:01,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:01,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:13:01,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:13:01,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:13:01,823 INFO L87 Difference]: Start difference. First operand 10271 states and 13608 transitions. Second operand 4 states. [2018-11-07 21:13:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:09,170 INFO L93 Difference]: Finished difference Result 38940 states and 53275 transitions. [2018-11-07 21:13:09,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:13:09,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-11-07 21:13:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:09,299 INFO L225 Difference]: With dead ends: 38940 [2018-11-07 21:13:09,299 INFO L226 Difference]: Without dead ends: 28675 [2018-11-07 21:13:09,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:13:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28675 states. [2018-11-07 21:13:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28675 to 28662. [2018-11-07 21:13:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28662 states. [2018-11-07 21:13:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28662 states to 28662 states and 36108 transitions. [2018-11-07 21:13:10,044 INFO L78 Accepts]: Start accepts. Automaton has 28662 states and 36108 transitions. Word has length 156 [2018-11-07 21:13:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:10,044 INFO L480 AbstractCegarLoop]: Abstraction has 28662 states and 36108 transitions. [2018-11-07 21:13:10,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:13:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28662 states and 36108 transitions. [2018-11-07 21:13:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-07 21:13:10,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:10,075 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:13:10,075 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:10,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash -351976915, now seen corresponding path program 1 times [2018-11-07 21:13:10,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:10,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:10,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:10,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:10,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 155 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:10,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:10,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:10,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-11-07 21:13:10,542 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2356], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:10,606 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:10,606 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:11,289 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:11,291 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:13:11,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:11,332 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:11,946 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-07 21:13:11,946 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:12,319 INFO L415 sIntCurrentIteration]: We unified 294 AI predicates to 294 [2018-11-07 21:13:12,319 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:12,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:12,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 21:13:12,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:12,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:13:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:13:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:13:12,322 INFO L87 Difference]: Start difference. First operand 28662 states and 36108 transitions. Second operand 7 states. [2018-11-07 21:13:19,871 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:13:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:36,033 INFO L93 Difference]: Finished difference Result 58023 states and 72984 transitions. [2018-11-07 21:13:36,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:36,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2018-11-07 21:13:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:36,125 INFO L225 Difference]: With dead ends: 58023 [2018-11-07 21:13:36,126 INFO L226 Difference]: Without dead ends: 29367 [2018-11-07 21:13:36,193 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 295 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:13:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29367 states. [2018-11-07 21:13:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29367 to 29365. [2018-11-07 21:13:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29365 states. [2018-11-07 21:13:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29365 states to 29365 states and 36823 transitions. [2018-11-07 21:13:36,748 INFO L78 Accepts]: Start accepts. Automaton has 29365 states and 36823 transitions. Word has length 295 [2018-11-07 21:13:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:36,748 INFO L480 AbstractCegarLoop]: Abstraction has 29365 states and 36823 transitions. [2018-11-07 21:13:36,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:13:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29365 states and 36823 transitions. [2018-11-07 21:13:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-07 21:13:36,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:36,775 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:36,775 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:36,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:36,775 INFO L82 PathProgramCache]: Analyzing trace with hash -644235286, now seen corresponding path program 1 times [2018-11-07 21:13:36,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:36,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:36,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:36,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:36,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:37,288 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:37,686 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:37,966 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:13:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 212 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:38,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:38,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:38,385 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-11-07 21:13:38,386 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2356], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:38,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:38,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:38,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:38,925 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:13:38,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:38,956 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:40,740 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 77.73% of their original sizes. [2018-11-07 21:13:40,740 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:41,111 INFO L415 sIntCurrentIteration]: We unified 481 AI predicates to 481 [2018-11-07 21:13:41,112 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:41,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:41,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:13:41,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:41,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:13:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:13:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:13:41,115 INFO L87 Difference]: Start difference. First operand 29365 states and 36823 transitions. Second operand 17 states. [2018-11-07 21:14:17,666 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:14:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:49,086 INFO L93 Difference]: Finished difference Result 61229 states and 76231 transitions. [2018-11-07 21:14:49,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 21:14:49,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 482 [2018-11-07 21:14:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:49,176 INFO L225 Difference]: With dead ends: 61229 [2018-11-07 21:14:49,176 INFO L226 Difference]: Without dead ends: 29656 [2018-11-07 21:14:49,246 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 492 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2018-11-07 21:14:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29656 states. [2018-11-07 21:14:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29656 to 29365. [2018-11-07 21:14:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29365 states. [2018-11-07 21:14:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29365 states to 29365 states and 36815 transitions. [2018-11-07 21:14:50,473 INFO L78 Accepts]: Start accepts. Automaton has 29365 states and 36815 transitions. Word has length 482 [2018-11-07 21:14:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:50,474 INFO L480 AbstractCegarLoop]: Abstraction has 29365 states and 36815 transitions. [2018-11-07 21:14:50,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:14:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 29365 states and 36815 transitions. [2018-11-07 21:14:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-11-07 21:14:50,516 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:50,517 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:50,517 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:50,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:50,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2071970747, now seen corresponding path program 1 times [2018-11-07 21:14:50,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:50,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:50,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:50,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:50,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:51,316 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:14:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 157 proven. 212 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-07 21:14:51,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:14:51,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:14:51,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 824 with the following transitions: [2018-11-07 21:14:51,995 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2356], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:14:52,009 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:14:52,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:14:52,998 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:14:52,999 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:14:53,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:53,007 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:15:03,038 INFO L227 lantSequenceWeakener]: Weakened 514 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 21:15:03,038 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:15:05,868 INFO L415 sIntCurrentIteration]: We unified 822 AI predicates to 822 [2018-11-07 21:15:05,868 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:15:05,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:15:05,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [8] total 36 [2018-11-07 21:15:05,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:15:05,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 21:15:05,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 21:15:05,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-07 21:15:05,871 INFO L87 Difference]: Start difference. First operand 29365 states and 36815 transitions. Second operand 30 states. [2018-11-07 21:15:51,245 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:15:59,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 21:15:59,236 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:15:59,242 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:15:59,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:15:59 BoogieIcfgContainer [2018-11-07 21:15:59,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:15:59,243 INFO L168 Benchmark]: Toolchain (without parser) took 218881.99 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,244 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:15:59,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1691.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 335.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -973.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,246 INFO L168 Benchmark]: Boogie Preprocessor took 258.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,247 INFO L168 Benchmark]: RCFGBuilder took 7486.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.9 MB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,248 INFO L168 Benchmark]: TraceAbstraction took 209104.32 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 21:15:59,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1691.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 335.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -973.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 258.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7486.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.9 MB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209104.32 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (29365states) and FLOYD_HOARE automaton (currently 34 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (12120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 181.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2653 SDtfs, 21504 SDslu, 1739 SDs, 0 SdLazy, 45486 SolverSat, 5806 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1675 GetRequests, 1481 SyntacticMatches, 84 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29365occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9981679782379469 AbsIntWeakeningRatio, 0.061365059486537255 AbsIntAvgWeakeningVarsNumRemoved, 12.610519724483407 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 514 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2202 NumberOfCodeBlocks, 2202 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2194 ConstructedInterpolants, 0 QuantifiedInterpolants, 4023836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 866/1407 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown