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/Problem15_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:08:39,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:08:39,460 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:08:39,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:08:39,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:08:39,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:08:39,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:08:39,484 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:08:39,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:08:39,488 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:08:39,489 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:08:39,490 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:08:39,498 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:08:39,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:08:39,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:08:39,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:08:39,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:08:39,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:08:39,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:08:39,509 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:08:39,510 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:08:39,511 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:08:39,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:08:39,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:08:39,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:08:39,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:08:39,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:08:39,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:08:39,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:08:39,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:08:39,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:08:39,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:08:39,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:08:39,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:08:39,520 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:08:39,521 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:08:39,521 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 18:08:39,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:08:39,539 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:08:39,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:08:39,540 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:08:39,540 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:08:39,540 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:08:39,540 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:08:39,540 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:08:39,541 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:08:39,541 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:08:39,541 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:08:39,541 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:08:39,541 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:08:39,542 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:08:39,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:08:39,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:08:39,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:08:39,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:08:39,543 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:08:39,543 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:08:39,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:08:39,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:08:39,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:08:39,544 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:08:39,544 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:08:39,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:08:39,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:08:39,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:08:39,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:08:39,545 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:08:39,545 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:08:39,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:08:39,546 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:08:39,546 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:08:39,546 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:08:39,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:08:39,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:08:39,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:08:39,610 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:08:39,610 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:08:39,611 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-11-07 18:08:39,679 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12e35ea7/f41e772f1af84ed7aafd533c295e6e1f/FLAG001f59c2a [2018-11-07 18:08:40,364 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:08:40,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-11-07 18:08:40,382 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12e35ea7/f41e772f1af84ed7aafd533c295e6e1f/FLAG001f59c2a [2018-11-07 18:08:40,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12e35ea7/f41e772f1af84ed7aafd533c295e6e1f [2018-11-07 18:08:40,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:08:40,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:08:40,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:40,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:08:40,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:08:40,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:40" (1/1) ... [2018-11-07 18:08:40,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:40, skipping insertion in model container [2018-11-07 18:08:40,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:40" (1/1) ... [2018-11-07 18:08:40,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:08:40,528 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:08:41,443 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:41,447 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:08:41,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:41,754 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:08:41,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41 WrapperNode [2018-11-07 18:08:41,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:41,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:41,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:08:41,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:08:41,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:41,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:41,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:42,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:08:42,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:08:42,000 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:08:42,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (1/1) ... [2018-11-07 18:08:42,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:08:42,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:08:42,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:08:42,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:08:42,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (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 18:08:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:08:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:08:42,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:08:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:08:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:08:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:08:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:08:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:08:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:08:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:08:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:08:48,077 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:08:48,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:48 BoogieIcfgContainer [2018-11-07 18:08:48,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:08:48,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:08:48,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:08:48,083 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:08:48,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:08:40" (1/3) ... [2018-11-07 18:08:48,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:48, skipping insertion in model container [2018-11-07 18:08:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:41" (2/3) ... [2018-11-07 18:08:48,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:48, skipping insertion in model container [2018-11-07 18:08:48,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:48" (3/3) ... [2018-11-07 18:08:48,086 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label37_false-unreach-call.c [2018-11-07 18:08:48,097 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:08:48,107 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:08:48,125 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:08:48,166 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:08:48,166 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:08:48,166 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:08:48,166 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:08:48,166 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:08:48,167 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:08:48,167 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:08:48,167 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:08:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 18:08:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 18:08:48,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:48,211 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] [2018-11-07 18:08:48,213 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:48,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1604486473, now seen corresponding path program 1 times [2018-11-07 18:08:48,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:48,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:48,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:48,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:48,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:48,618 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 18:08:48,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:48,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:08:48,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:48,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:08:48,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:08:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:48,642 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 18:08:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:52,025 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-11-07 18:08:52,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:08:52,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-07 18:08:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:52,063 INFO L225 Difference]: With dead ends: 1193 [2018-11-07 18:08:52,063 INFO L226 Difference]: Without dead ends: 753 [2018-11-07 18:08:52,072 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-11-07 18:08:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-11-07 18:08:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-11-07 18:08:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-11-07 18:08:52,200 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 27 [2018-11-07 18:08:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:52,200 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-11-07 18:08:52,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:08:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-11-07 18:08:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-07 18:08:52,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:52,210 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:08:52,210 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:52,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 539845592, now seen corresponding path program 1 times [2018-11-07 18:08:52,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:52,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:52,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:52,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:52,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:52,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:52,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:08:52,513 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:52,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:08:52,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:08:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:08:52,517 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-11-07 18:09:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:02,092 INFO L93 Difference]: Finished difference Result 2819 states and 5076 transitions. [2018-11-07 18:09:02,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:09:02,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-11-07 18:09:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:02,107 INFO L225 Difference]: With dead ends: 2819 [2018-11-07 18:09:02,108 INFO L226 Difference]: Without dead ends: 2072 [2018-11-07 18:09:02,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:09:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2018-11-07 18:09:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2046. [2018-11-07 18:09:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2018-11-07 18:09:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3209 transitions. [2018-11-07 18:09:02,204 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3209 transitions. Word has length 107 [2018-11-07 18:09:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:02,205 INFO L480 AbstractCegarLoop]: Abstraction has 2046 states and 3209 transitions. [2018-11-07 18:09:02,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:09:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3209 transitions. [2018-11-07 18:09:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 18:09:02,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:02,214 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:09:02,214 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:02,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1140571872, now seen corresponding path program 1 times [2018-11-07 18:09:02,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:02,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:02,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:02,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:02,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:09:02,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:09:02,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:09:02,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:02,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:09:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:09:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:09:02,567 INFO L87 Difference]: Start difference. First operand 2046 states and 3209 transitions. Second operand 6 states. [2018-11-07 18:09:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:09,021 INFO L93 Difference]: Finished difference Result 6256 states and 10254 transitions. [2018-11-07 18:09:09,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:09:09,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 18:09:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:09,045 INFO L225 Difference]: With dead ends: 6256 [2018-11-07 18:09:09,046 INFO L226 Difference]: Without dead ends: 4216 [2018-11-07 18:09:09,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:09:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2018-11-07 18:09:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4159. [2018-11-07 18:09:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2018-11-07 18:09:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 6091 transitions. [2018-11-07 18:09:09,172 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 6091 transitions. Word has length 111 [2018-11-07 18:09:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:09,173 INFO L480 AbstractCegarLoop]: Abstraction has 4159 states and 6091 transitions. [2018-11-07 18:09:09,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:09:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 6091 transitions. [2018-11-07 18:09:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 18:09:09,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:09,178 INFO L375 BasicCegarLoop]: trace histogram [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, 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 18:09:09,178 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:09,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:09,179 INFO L82 PathProgramCache]: Analyzing trace with hash -142723084, now seen corresponding path program 1 times [2018-11-07 18:09:09,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:09,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:09,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:09,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:09,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 41 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 18:09:09,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:09:09,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:09:09,601 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-11-07 18:09:09,603 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:09:09,660 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:09:09,660 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:09:10,197 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:10,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:09:10,217 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:09:10,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:10,261 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:09:10,692 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 18:09:10,692 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:09:10,952 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-11-07 18:09:10,953 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:09:10,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:09:10,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:09:10,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:10,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:09:10,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:09:10,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:09:10,955 INFO L87 Difference]: Start difference. First operand 4159 states and 6091 transitions. Second operand 7 states. [2018-11-07 18:09:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:38,837 INFO L93 Difference]: Finished difference Result 8622 states and 12530 transitions. [2018-11-07 18:09:38,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:09:38,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-11-07 18:09:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:38,857 INFO L225 Difference]: With dead ends: 8622 [2018-11-07 18:09:38,857 INFO L226 Difference]: Without dead ends: 4469 [2018-11-07 18:09:38,868 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:09:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2018-11-07 18:09:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4467. [2018-11-07 18:09:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4467 states. [2018-11-07 18:09:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6407 transitions. [2018-11-07 18:09:38,968 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6407 transitions. Word has length 181 [2018-11-07 18:09:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:38,969 INFO L480 AbstractCegarLoop]: Abstraction has 4467 states and 6407 transitions. [2018-11-07 18:09:38,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:09:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6407 transitions. [2018-11-07 18:09:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 18:09:38,972 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:38,973 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:09:38,973 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:38,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:38,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1466713142, now seen corresponding path program 1 times [2018-11-07 18:09:38,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:38,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:38,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:38,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:38,975 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 41 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 18:09:39,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:09:39,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:09:39,281 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-11-07 18:09:39,282 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:09:39,287 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:09:39,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:09:39,378 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:39,968 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:09:39,968 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:09:39,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:39,977 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:09:40,399 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 78.82% of their original sizes. [2018-11-07 18:09:40,399 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:09:42,087 INFO L415 sIntCurrentIteration]: We unified 206 AI predicates to 206 [2018-11-07 18:09:42,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:09:42,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:09:42,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 18:09:42,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:42,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:09:42,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:09:42,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:09:42,090 INFO L87 Difference]: Start difference. First operand 4467 states and 6407 transitions. Second operand 19 states. [2018-11-07 18:10:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:38,635 INFO L93 Difference]: Finished difference Result 10587 states and 15200 transitions. [2018-11-07 18:10:38,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:10:38,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2018-11-07 18:10:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:38,659 INFO L225 Difference]: With dead ends: 10587 [2018-11-07 18:10:38,660 INFO L226 Difference]: Without dead ends: 6434 [2018-11-07 18:10:38,672 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:10:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2018-11-07 18:10:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 5922. [2018-11-07 18:10:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5922 states. [2018-11-07 18:10:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7904 transitions. [2018-11-07 18:10:38,799 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7904 transitions. Word has length 207 [2018-11-07 18:10:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:38,800 INFO L480 AbstractCegarLoop]: Abstraction has 5922 states and 7904 transitions. [2018-11-07 18:10:38,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 18:10:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7904 transitions. [2018-11-07 18:10:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-07 18:10:38,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:38,819 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:10:38,819 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:38,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1658349153, now seen corresponding path program 1 times [2018-11-07 18:10:38,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:38,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:38,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:38,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:38,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-07 18:10:39,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:10:39,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:10:39,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:39,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:10:39,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:10:39,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:10:39,573 INFO L87 Difference]: Start difference. First operand 5922 states and 7904 transitions. Second operand 5 states. [2018-11-07 18:10:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:43,223 INFO L93 Difference]: Finished difference Result 14192 states and 20251 transitions. [2018-11-07 18:10:43,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:10:43,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 452 [2018-11-07 18:10:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:43,265 INFO L225 Difference]: With dead ends: 14192 [2018-11-07 18:10:43,265 INFO L226 Difference]: Without dead ends: 10039 [2018-11-07 18:10:43,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:10:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2018-11-07 18:10:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 9446. [2018-11-07 18:10:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9446 states. [2018-11-07 18:10:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9446 states to 9446 states and 12141 transitions. [2018-11-07 18:10:43,480 INFO L78 Accepts]: Start accepts. Automaton has 9446 states and 12141 transitions. Word has length 452 [2018-11-07 18:10:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:43,481 INFO L480 AbstractCegarLoop]: Abstraction has 9446 states and 12141 transitions. [2018-11-07 18:10:43,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:10:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9446 states and 12141 transitions. [2018-11-07 18:10:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-07 18:10:43,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:43,497 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:10:43,497 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:43,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 417045728, now seen corresponding path program 1 times [2018-11-07 18:10:43,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:43,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:43,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:43,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:43,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:43,964 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:10:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 140 proven. 86 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 18:10:44,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:44,333 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:44,334 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-11-07 18:10:44,334 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:44,343 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:44,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:44,580 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:44,759 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:10:44,759 INFO L272 AbstractInterpreter]: Visited 284 different actions 562 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 18:10:44,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:44,764 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:10:45,395 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 79.71% of their original sizes. [2018-11-07 18:10:45,395 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:10:45,939 INFO L415 sIntCurrentIteration]: We unified 462 AI predicates to 462 [2018-11-07 18:10:45,939 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:10:45,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:10:45,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [8] total 26 [2018-11-07 18:10:45,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:45,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 18:10:45,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 18:10:45,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:10:45,941 INFO L87 Difference]: Start difference. First operand 9446 states and 12141 transitions. Second operand 20 states. [2018-11-07 18:11:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:17,477 INFO L93 Difference]: Finished difference Result 18515 states and 24098 transitions. [2018-11-07 18:11:17,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 18:11:17,477 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 463 [2018-11-07 18:11:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:17,507 INFO L225 Difference]: With dead ends: 18515 [2018-11-07 18:11:17,508 INFO L226 Difference]: Without dead ends: 10838 [2018-11-07 18:11:17,527 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 473 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:11:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2018-11-07 18:11:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 10597. [2018-11-07 18:11:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10597 states. [2018-11-07 18:11:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10597 states to 10597 states and 13390 transitions. [2018-11-07 18:11:17,731 INFO L78 Accepts]: Start accepts. Automaton has 10597 states and 13390 transitions. Word has length 463 [2018-11-07 18:11:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:17,732 INFO L480 AbstractCegarLoop]: Abstraction has 10597 states and 13390 transitions. [2018-11-07 18:11:17,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 18:11:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10597 states and 13390 transitions. [2018-11-07 18:11:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-11-07 18:11:17,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:17,751 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:11:17,751 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:17,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash -854442456, now seen corresponding path program 1 times [2018-11-07 18:11:17,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:17,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:17,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:17,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:17,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:18,227 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:11:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 140 proven. 117 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 18:11:19,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:19,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:11:19,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 495 with the following transitions: [2018-11-07 18:11:19,410 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:11:19,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:11:19,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:11:19,559 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:11:20,825 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:11:20,826 INFO L272 AbstractInterpreter]: Visited 285 different actions 1694 times. Merged at 8 different actions 42 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:11:20,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:20,835 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:11:20,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:20,835 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 18:11:20,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:20,849 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:11:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:21,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:11:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:11:21,354 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:11:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:11:22,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:11:22,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 18:11:22,315 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:11:22,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:11:22,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:11:22,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-11-07 18:11:22,317 INFO L87 Difference]: Start difference. First operand 10597 states and 13390 transitions. Second operand 11 states. [2018-11-07 18:11:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:31,959 INFO L93 Difference]: Finished difference Result 30239 states and 40559 transitions. [2018-11-07 18:11:31,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 18:11:31,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 494 [2018-11-07 18:11:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:32,064 INFO L225 Difference]: With dead ends: 30239 [2018-11-07 18:11:32,065 INFO L226 Difference]: Without dead ends: 21411 [2018-11-07 18:11:32,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 997 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:11:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21411 states. [2018-11-07 18:11:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21411 to 20955. [2018-11-07 18:11:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20955 states. [2018-11-07 18:11:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20955 states to 20955 states and 24134 transitions. [2018-11-07 18:11:32,601 INFO L78 Accepts]: Start accepts. Automaton has 20955 states and 24134 transitions. Word has length 494 [2018-11-07 18:11:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:32,603 INFO L480 AbstractCegarLoop]: Abstraction has 20955 states and 24134 transitions. [2018-11-07 18:11:32,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:11:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 20955 states and 24134 transitions. [2018-11-07 18:11:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-11-07 18:11:32,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:32,641 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:11:32,641 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:32,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:32,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1175807720, now seen corresponding path program 1 times [2018-11-07 18:11:32,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:32,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:32,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:32,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:32,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:33,191 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:11:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 167 proven. 300 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:11:34,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:34,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:11:34,677 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-11-07 18:11:34,677 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [636], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:11:34,683 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:11:34,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:11:34,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:11:35,560 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:11:35,560 INFO L272 AbstractInterpreter]: Visited 285 different actions 854 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:11:35,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:35,599 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:11:36,220 INFO L227 lantSequenceWeakener]: Weakened 537 states. On average, predicates are now at 80.08% of their original sizes. [2018-11-07 18:11:36,220 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:11:37,004 INFO L415 sIntCurrentIteration]: We unified 541 AI predicates to 541 [2018-11-07 18:11:37,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:11:37,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:11:37,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2018-11-07 18:11:37,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:11:37,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:11:37,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:11:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:11:37,006 INFO L87 Difference]: Start difference. First operand 20955 states and 24134 transitions. Second operand 10 states. [2018-11-07 18:11:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:46,140 INFO L93 Difference]: Finished difference Result 43520 states and 50204 transitions. [2018-11-07 18:11:46,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:11:46,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 542 [2018-11-07 18:11:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:46,209 INFO L225 Difference]: With dead ends: 43520 [2018-11-07 18:11:46,209 INFO L226 Difference]: Without dead ends: 24644 [2018-11-07 18:11:46,245 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 548 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:11:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24644 states. [2018-11-07 18:11:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24644 to 24618. [2018-11-07 18:11:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24618 states. [2018-11-07 18:11:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24618 states to 24618 states and 28056 transitions. [2018-11-07 18:11:46,595 INFO L78 Accepts]: Start accepts. Automaton has 24618 states and 28056 transitions. Word has length 542 [2018-11-07 18:11:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:46,595 INFO L480 AbstractCegarLoop]: Abstraction has 24618 states and 28056 transitions. [2018-11-07 18:11:46,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:11:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24618 states and 28056 transitions. [2018-11-07 18:11:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-11-07 18:11:46,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:46,629 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:11:46,629 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:46,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1773416336, now seen corresponding path program 1 times [2018-11-07 18:11:46,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:46,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:46,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:46,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:46,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 18:11:47,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:11:47,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:11:47,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:11:47,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:11:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:11:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:11:47,526 INFO L87 Difference]: Start difference. First operand 24618 states and 28056 transitions. Second operand 3 states. [2018-11-07 18:11:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:50,012 INFO L93 Difference]: Finished difference Result 43796 states and 50565 transitions. [2018-11-07 18:11:50,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:11:50,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 543 [2018-11-07 18:11:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:50,086 INFO L225 Difference]: With dead ends: 43796 [2018-11-07 18:11:50,086 INFO L226 Difference]: Without dead ends: 24920 [2018-11-07 18:11:50,118 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:11:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24920 states. [2018-11-07 18:11:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24920 to 24612. [2018-11-07 18:11:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24612 states. [2018-11-07 18:11:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24612 states to 24612 states and 28042 transitions. [2018-11-07 18:11:50,463 INFO L78 Accepts]: Start accepts. Automaton has 24612 states and 28042 transitions. Word has length 543 [2018-11-07 18:11:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:50,465 INFO L480 AbstractCegarLoop]: Abstraction has 24612 states and 28042 transitions. [2018-11-07 18:11:50,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:11:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 24612 states and 28042 transitions. [2018-11-07 18:11:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2018-11-07 18:11:50,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:50,490 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:50,490 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:50,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:50,490 INFO L82 PathProgramCache]: Analyzing trace with hash -728701636, now seen corresponding path program 1 times [2018-11-07 18:11:50,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:50,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:50,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:50,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:50,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 18:11:50,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:50,996 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:11:50,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 565 with the following transitions: [2018-11-07 18:11:50,996 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:11:51,002 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:11:51,002 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:11:51,157 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:11:53,119 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:11:53,119 INFO L272 AbstractInterpreter]: Visited 286 different actions 1705 times. Merged at 9 different actions 48 times. Widened at 1 different actions 1 times. Found 14 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:11:53,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:53,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:11:53,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:53,126 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:11:53,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:53,135 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:11:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:53,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:11:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 18:11:53,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:11:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 18:11:53,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:11:53,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-07 18:11:53,955 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:11:53,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:11:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:11:53,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:11:53,957 INFO L87 Difference]: Start difference. First operand 24612 states and 28042 transitions. Second operand 7 states. [2018-11-07 18:11:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:58,055 INFO L93 Difference]: Finished difference Result 47894 states and 56536 transitions. [2018-11-07 18:11:58,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:11:58,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 564 [2018-11-07 18:11:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:58,130 INFO L225 Difference]: With dead ends: 47894 [2018-11-07 18:11:58,130 INFO L226 Difference]: Without dead ends: 29024 [2018-11-07 18:11:58,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1126 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:11:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29024 states. [2018-11-07 18:11:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29024 to 26788. [2018-11-07 18:11:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26788 states. [2018-11-07 18:11:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26788 states to 26788 states and 30025 transitions. [2018-11-07 18:11:58,583 INFO L78 Accepts]: Start accepts. Automaton has 26788 states and 30025 transitions. Word has length 564 [2018-11-07 18:11:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:58,584 INFO L480 AbstractCegarLoop]: Abstraction has 26788 states and 30025 transitions. [2018-11-07 18:11:58,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:11:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 26788 states and 30025 transitions. [2018-11-07 18:11:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-11-07 18:11:58,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:58,610 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:58,610 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:58,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1312283364, now seen corresponding path program 1 times [2018-11-07 18:11:58,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:58,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:58,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:58,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:58,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-11-07 18:11:59,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:11:59,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:11:59,462 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:11:59,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:11:59,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:11:59,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:11:59,463 INFO L87 Difference]: Start difference. First operand 26788 states and 30025 transitions. Second operand 4 states. [2018-11-07 18:12:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:03,042 INFO L93 Difference]: Finished difference Result 76777 states and 87566 transitions. [2018-11-07 18:12:03,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:12:03,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-11-07 18:12:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:03,168 INFO L225 Difference]: With dead ends: 76777 [2018-11-07 18:12:03,168 INFO L226 Difference]: Without dead ends: 51233 [2018-11-07 18:12:03,239 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 18:12:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51233 states. [2018-11-07 18:12:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51233 to 49903. [2018-11-07 18:12:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49903 states. [2018-11-07 18:12:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49903 states to 49903 states and 55263 transitions. [2018-11-07 18:12:03,901 INFO L78 Accepts]: Start accepts. Automaton has 49903 states and 55263 transitions. Word has length 583 [2018-11-07 18:12:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:03,902 INFO L480 AbstractCegarLoop]: Abstraction has 49903 states and 55263 transitions. [2018-11-07 18:12:03,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:12:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49903 states and 55263 transitions. [2018-11-07 18:12:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-11-07 18:12:03,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:03,933 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:12:03,934 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:03,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:03,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1076436241, now seen corresponding path program 1 times [2018-11-07 18:12:03,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:03,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:03,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:03,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:03,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-07 18:12:04,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:12:04,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:12:04,549 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:04,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:12:04,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:12:04,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:12:04,549 INFO L87 Difference]: Start difference. First operand 49903 states and 55263 transitions. Second operand 4 states. [2018-11-07 18:12:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:08,570 INFO L93 Difference]: Finished difference Result 123607 states and 139608 transitions. [2018-11-07 18:12:08,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:12:08,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 589 [2018-11-07 18:12:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:08,656 INFO L225 Difference]: With dead ends: 123607 [2018-11-07 18:12:08,656 INFO L226 Difference]: Without dead ends: 45116 [2018-11-07 18:12:08,795 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 18:12:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45116 states. [2018-11-07 18:12:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45116 to 44531. [2018-11-07 18:12:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44531 states. [2018-11-07 18:12:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44531 states to 44531 states and 48376 transitions. [2018-11-07 18:12:09,342 INFO L78 Accepts]: Start accepts. Automaton has 44531 states and 48376 transitions. Word has length 589 [2018-11-07 18:12:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:09,342 INFO L480 AbstractCegarLoop]: Abstraction has 44531 states and 48376 transitions. [2018-11-07 18:12:09,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:12:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 44531 states and 48376 transitions. [2018-11-07 18:12:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-11-07 18:12:09,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:09,355 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:12:09,355 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:09,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1829760868, now seen corresponding path program 1 times [2018-11-07 18:12:09,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:09,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:09,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:09,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:09,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-07 18:12:09,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:12:09,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:12:09,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 628 with the following transitions: [2018-11-07 18:12:09,971 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [790], [793], [797], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:12:09,977 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:12:09,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:12:10,118 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 18:12:10,283 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 18:12:10,284 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 18:12:10,284 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 18:12:10,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:12:10,285 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:12:10,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:10,302 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:12:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:10,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:12:10,495 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 18:12:10,696 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:12:10,697 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:12:10,703 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:12:10,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:12:10 BoogieIcfgContainer [2018-11-07 18:12:10,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:12:10,704 INFO L168 Benchmark]: Toolchain (without parser) took 210293.30 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 972.2 MB in the end (delta: 463.2 MB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,706 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-07 18:12:10,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1342.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -895.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,708 INFO L168 Benchmark]: Boogie Preprocessor took 157.29 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,709 INFO L168 Benchmark]: RCFGBuilder took 5920.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 277.8 MB). Peak memory consumption was 277.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,709 INFO L168 Benchmark]: TraceAbstraction took 202624.65 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 972.2 MB in the end (delta: 961.2 MB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2018-11-07 18:12:10,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1342.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 243.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -895.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.29 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5920.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 277.8 MB). Peak memory consumption was 277.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202624.65 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 972.2 MB in the end (delta: 961.2 MB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was analyzing trace of length 628 with TraceHistMax 5,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 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 173.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4164 SDtfs, 24017 SDslu, 3366 SDs, 0 SdLazy, 35727 SolverSat, 6015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.0s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 3635 GetRequests, 3485 SyntacticMatches, 11 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49903occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.5s AbstIntTime, 7 AbstIntIterations, 4 AbstIntStrong, 0.9973544475501672 AbsIntWeakeningRatio, 0.08855291576673865 AbsIntAvgWeakeningVarsNumRemoved, 18.13390928725702 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 6372 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 5921 NumberOfCodeBlocks, 5921 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8961742 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1535 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 4910/5563 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown