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_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:45:49,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:45:49,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:45:49,966 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:45:49,967 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:45:49,968 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:45:49,969 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:45:49,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:45:49,973 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:45:49,974 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:45:49,975 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:45:49,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:45:49,976 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:45:49,977 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:45:49,978 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:45:49,979 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:45:49,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:45:49,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:45:49,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:45:49,995 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:45:49,996 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:45:49,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:45:50,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:45:50,003 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:45:50,004 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:45:50,005 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:45:50,005 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:45:50,006 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:45:50,007 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:45:50,011 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:45:50,012 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:45:50,012 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:45:50,013 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:45:50,014 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:45:50,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:45:50,016 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:45:50,016 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 20:45:50,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:45:50,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:45:50,050 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:45:50,051 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:45:50,051 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:45:50,051 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:45:50,051 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:45:50,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:45:50,052 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:45:50,052 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:45:50,052 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:45:50,052 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:45:50,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:45:50,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:45:50,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:45:50,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:45:50,054 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:45:50,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:45:50,054 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:45:50,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:45:50,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:45:50,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:45:50,055 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:45:50,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:45:50,055 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:45:50,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:45:50,056 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:45:50,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:45:50,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:45:50,056 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:45:50,057 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:45:50,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:45:50,057 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:45:50,057 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:45:50,057 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:45:50,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:45:50,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:45:50,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:45:50,122 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:45:50,122 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:45:50,123 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-11-07 20:45:50,187 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1271ecaa3/a930f0d0c3ba44219785054f125561e2/FLAG516f32482 [2018-11-07 20:45:50,863 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:45:50,864 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-11-07 20:45:50,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1271ecaa3/a930f0d0c3ba44219785054f125561e2/FLAG516f32482 [2018-11-07 20:45:50,904 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1271ecaa3/a930f0d0c3ba44219785054f125561e2 [2018-11-07 20:45:50,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:45:50,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:45:50,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:50,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:45:50,924 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:45:50,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:50" (1/1) ... [2018-11-07 20:45:50,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d73b804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:50, skipping insertion in model container [2018-11-07 20:45:50,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:50" (1/1) ... [2018-11-07 20:45:50,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:45:51,052 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:45:51,941 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:51,946 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:45:52,243 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:52,267 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:45:52,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52 WrapperNode [2018-11-07 20:45:52,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:52,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:52,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:45:52,270 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:45:52,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:52,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:45:52,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:45:52,491 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:45:52,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (1/1) ... [2018-11-07 20:45:52,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:45:52,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:45:52,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:45:52,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:45:52,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (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 20:45:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:45:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:45:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:45:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:45:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:45:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:45:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:45:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:45:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:45:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:45:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:46:00,437 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:46:00,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:00 BoogieIcfgContainer [2018-11-07 20:46:00,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:46:00,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:46:00,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:46:00,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:46:00,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:45:50" (1/3) ... [2018-11-07 20:46:00,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d27ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:00, skipping insertion in model container [2018-11-07 20:46:00,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:52" (2/3) ... [2018-11-07 20:46:00,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d27ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:00, skipping insertion in model container [2018-11-07 20:46:00,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:00" (3/3) ... [2018-11-07 20:46:00,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label44_true-unreach-call.c [2018-11-07 20:46:00,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:46:00,468 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:46:00,482 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:46:00,537 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:46:00,537 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:46:00,537 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:46:00,537 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:46:00,538 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:46:00,538 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:46:00,538 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:46:00,538 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:46:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:46:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 20:46:00,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:00,584 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:00,586 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:00,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2074557279, now seen corresponding path program 1 times [2018-11-07 20:46:00,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:00,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:00,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:00,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:00,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:01,093 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:46:01,216 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 20:46:01,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:01,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:46:01,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:01,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:46:01,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:46:01,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:01,261 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:46:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:08,518 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-11-07 20:46:08,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:08,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-07 20:46:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:08,545 INFO L225 Difference]: With dead ends: 1501 [2018-11-07 20:46:08,545 INFO L226 Difference]: Without dead ends: 1057 [2018-11-07 20:46:08,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-11-07 20:46:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-11-07 20:46:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:46:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-11-07 20:46:08,674 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 73 [2018-11-07 20:46:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:08,675 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-11-07 20:46:08,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-11-07 20:46:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 20:46:08,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:08,688 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:08,688 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:08,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash -512151083, now seen corresponding path program 1 times [2018-11-07 20:46:08,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:08,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:08,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:08,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:08,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:08,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:08,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:46:08,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:08,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:46:08,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:46:08,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:08,970 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-11-07 20:46:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:14,241 INFO L93 Difference]: Finished difference Result 2732 states and 4244 transitions. [2018-11-07 20:46:14,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:14,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-11-07 20:46:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:14,259 INFO L225 Difference]: With dead ends: 2732 [2018-11-07 20:46:14,260 INFO L226 Difference]: Without dead ends: 1994 [2018-11-07 20:46:14,266 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2018-11-07 20:46:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1682. [2018-11-07 20:46:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-11-07 20:46:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2410 transitions. [2018-11-07 20:46:14,349 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2410 transitions. Word has length 143 [2018-11-07 20:46:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:14,352 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 2410 transitions. [2018-11-07 20:46:14,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2410 transitions. [2018-11-07 20:46:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 20:46:14,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:14,370 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:14,370 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:14,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:14,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1056955347, now seen corresponding path program 1 times [2018-11-07 20:46:14,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:14,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:14,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:14,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:14,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 135 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:46:15,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:15,301 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:15,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-07 20:46:15,305 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [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], [816], [819], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:15,368 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:15,369 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:15,878 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:17,441 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:17,443 INFO L272 AbstractInterpreter]: Visited 130 different actions 874 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 20:46:17,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:17,484 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:18,348 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 77.98% of their original sizes. [2018-11-07 20:46:18,348 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:20,054 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-11-07 20:46:20,055 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:20,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:20,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:46:20,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:20,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:46:20,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:46:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:46:20,059 INFO L87 Difference]: Start difference. First operand 1682 states and 2410 transitions. Second operand 19 states. [2018-11-07 20:47:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:13,661 INFO L93 Difference]: Finished difference Result 5813 states and 7647 transitions. [2018-11-07 20:47:13,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 20:47:13,661 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 293 [2018-11-07 20:47:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:13,682 INFO L225 Difference]: With dead ends: 5813 [2018-11-07 20:47:13,682 INFO L226 Difference]: Without dead ends: 4137 [2018-11-07 20:47:13,693 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 305 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2018-11-07 20:47:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2018-11-07 20:47:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3604. [2018-11-07 20:47:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3604 states. [2018-11-07 20:47:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4411 transitions. [2018-11-07 20:47:13,801 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4411 transitions. Word has length 293 [2018-11-07 20:47:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:13,802 INFO L480 AbstractCegarLoop]: Abstraction has 3604 states and 4411 transitions. [2018-11-07 20:47:13,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:47:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4411 transitions. [2018-11-07 20:47:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-07 20:47:13,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:13,815 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:13,816 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:13,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:13,816 INFO L82 PathProgramCache]: Analyzing trace with hash 661351119, now seen corresponding path program 1 times [2018-11-07 20:47:13,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:13,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:13,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:13,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:13,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:47:14,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:14,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:14,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-07 20:47:14,619 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [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 20:47:14,641 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:14,641 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:15,073 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:15,073 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 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 20:47:15,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:15,082 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:15,777 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 79.07% of their original sizes. [2018-11-07 20:47:15,777 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:16,328 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-11-07 20:47:16,328 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:16,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:16,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 20:47:16,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:16,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:47:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:47:16,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:47:16,330 INFO L87 Difference]: Start difference. First operand 3604 states and 4411 transitions. Second operand 15 states. [2018-11-07 20:47:19,532 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:51,774 INFO L93 Difference]: Finished difference Result 5887 states and 7553 transitions. [2018-11-07 20:47:51,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:47:51,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 434 [2018-11-07 20:47:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:51,794 INFO L225 Difference]: With dead ends: 5887 [2018-11-07 20:47:51,794 INFO L226 Difference]: Without dead ends: 4211 [2018-11-07 20:47:51,801 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:47:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2018-11-07 20:47:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4207. [2018-11-07 20:47:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4207 states. [2018-11-07 20:47:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5058 transitions. [2018-11-07 20:47:51,908 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5058 transitions. Word has length 434 [2018-11-07 20:47:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:51,909 INFO L480 AbstractCegarLoop]: Abstraction has 4207 states and 5058 transitions. [2018-11-07 20:47:51,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:47:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5058 transitions. [2018-11-07 20:47:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-11-07 20:47:51,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:51,928 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 20:47:51,928 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:51,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash -706120551, now seen corresponding path program 1 times [2018-11-07 20:47:51,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:51,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:51,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:51,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:51,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 20:47:52,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:52,457 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:52,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 531 with the following transitions: [2018-11-07 20:47:52,458 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [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 20:47:52,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:52,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:52,521 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:59,983 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:47:59,983 INFO L272 AbstractInterpreter]: Visited 285 different actions 1132 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:47:59,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:59,997 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:47:59,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:59,997 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 20:48:00,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:00,009 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:48:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:00,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:48:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 308 proven. 41 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-07 20:48:01,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:48:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 208 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:48:03,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:48:03,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2018-11-07 20:48:03,385 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:48:03,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 20:48:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 20:48:03,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:48:03,387 INFO L87 Difference]: Start difference. First operand 4207 states and 5058 transitions. Second operand 12 states. [2018-11-07 20:48:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:39,003 INFO L93 Difference]: Finished difference Result 17584 states and 24788 transitions. [2018-11-07 20:48:39,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-11-07 20:48:39,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 530 [2018-11-07 20:48:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:39,084 INFO L225 Difference]: With dead ends: 17584 [2018-11-07 20:48:39,085 INFO L226 Difference]: Without dead ends: 13053 [2018-11-07 20:48:39,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1117 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1698, Invalid=7044, Unknown=0, NotChecked=0, Total=8742 [2018-11-07 20:48:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13053 states. [2018-11-07 20:48:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13053 to 11841. [2018-11-07 20:48:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11841 states. [2018-11-07 20:48:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11841 states to 11841 states and 14963 transitions. [2018-11-07 20:48:39,506 INFO L78 Accepts]: Start accepts. Automaton has 11841 states and 14963 transitions. Word has length 530 [2018-11-07 20:48:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:39,507 INFO L480 AbstractCegarLoop]: Abstraction has 11841 states and 14963 transitions. [2018-11-07 20:48:39,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 20:48:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11841 states and 14963 transitions. [2018-11-07 20:48:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-11-07 20:48:39,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:39,541 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:39,541 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:39,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1802874140, now seen corresponding path program 1 times [2018-11-07 20:48:39,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:39,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:39,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:39,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:39,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 204 proven. 174 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 20:48:40,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:40,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:40,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 555 with the following transitions: [2018-11-07 20:48:40,656 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [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], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [819], [823], [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], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:40,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:40,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:40,978 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:41,445 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:48:41,445 INFO L272 AbstractInterpreter]: Visited 297 different actions 888 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 20:48:41,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:41,452 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:48:41,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:41,452 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 20:48:41,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:41,462 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:48:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:41,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:48:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:48:42,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:48:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:48:43,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:48:43,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2018-11-07 20:48:43,021 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:48:43,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:48:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:48:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:48:43,023 INFO L87 Difference]: Start difference. First operand 11841 states and 14963 transitions. Second operand 11 states. [2018-11-07 20:49:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:05,739 INFO L93 Difference]: Finished difference Result 39011 states and 57235 transitions. [2018-11-07 20:49:05,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-11-07 20:49:05,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 554 [2018-11-07 20:49:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:05,961 INFO L225 Difference]: With dead ends: 39011 [2018-11-07 20:49:05,961 INFO L226 Difference]: Without dead ends: 29392 [2018-11-07 20:49:06,090 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1160 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1154, Invalid=4698, Unknown=0, NotChecked=0, Total=5852 [2018-11-07 20:49:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29392 states. [2018-11-07 20:49:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29392 to 27735. [2018-11-07 20:49:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27735 states. [2018-11-07 20:49:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27735 states to 27735 states and 34259 transitions. [2018-11-07 20:49:07,018 INFO L78 Accepts]: Start accepts. Automaton has 27735 states and 34259 transitions. Word has length 554 [2018-11-07 20:49:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:07,019 INFO L480 AbstractCegarLoop]: Abstraction has 27735 states and 34259 transitions. [2018-11-07 20:49:07,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:49:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27735 states and 34259 transitions. [2018-11-07 20:49:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-07 20:49:07,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:07,059 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:07,060 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:07,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash -13460220, now seen corresponding path program 1 times [2018-11-07 20:49:07,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:07,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:07,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:49:07,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:07,851 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:07,852 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 559 with the following transitions: [2018-11-07 20:49:07,852 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [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], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:49:07,858 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:07,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:08,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:49:09,198 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:49:09,198 INFO L272 AbstractInterpreter]: Visited 297 different actions 1173 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:49:09,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:09,203 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:49:09,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:09,203 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 20:49:09,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:09,214 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:49:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:09,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:49:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:49:09,564 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:49:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:49:09,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:49:09,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 20:49:09,824 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:49:09,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:49:09,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:49:09,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:49:09,826 INFO L87 Difference]: Start difference. First operand 27735 states and 34259 transitions. Second operand 9 states. [2018-11-07 20:49:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:16,742 INFO L93 Difference]: Finished difference Result 59988 states and 90148 transitions. [2018-11-07 20:49:16,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 20:49:16,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 558 [2018-11-07 20:49:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:16,959 INFO L225 Difference]: With dead ends: 59988 [2018-11-07 20:49:16,959 INFO L226 Difference]: Without dead ends: 34474 [2018-11-07 20:49:17,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1120 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:49:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2018-11-07 20:49:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 33507. [2018-11-07 20:49:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33507 states. [2018-11-07 20:49:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33507 states to 33507 states and 45654 transitions. [2018-11-07 20:49:18,356 INFO L78 Accepts]: Start accepts. Automaton has 33507 states and 45654 transitions. Word has length 558 [2018-11-07 20:49:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:18,357 INFO L480 AbstractCegarLoop]: Abstraction has 33507 states and 45654 transitions. [2018-11-07 20:49:18,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:49:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33507 states and 45654 transitions. [2018-11-07 20:49:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2018-11-07 20:49:18,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:18,382 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:18,382 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:18,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1589141200, now seen corresponding path program 1 times [2018-11-07 20:49:18,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:18,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:18,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:18,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-07 20:49:18,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:49:18,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:49:18,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:18,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:49:18,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:49:18,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:49:18,956 INFO L87 Difference]: Start difference. First operand 33507 states and 45654 transitions. Second operand 3 states. Received shutdown request... [2018-11-07 20:49:22,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:49:22,219 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:49:22,226 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:49:22,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:49:22 BoogieIcfgContainer [2018-11-07 20:49:22,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:49:22,227 INFO L168 Benchmark]: Toolchain (without parser) took 211310.83 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -819.9 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,228 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:49:22,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1349.60 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: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -913.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,230 INFO L168 Benchmark]: Boogie Preprocessor took 164.15 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,231 INFO L168 Benchmark]: RCFGBuilder took 7783.96 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: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,232 INFO L168 Benchmark]: TraceAbstraction took 201786.63 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -312.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:22,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1349.60 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: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -913.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 164.15 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7783.96 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: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201786.63 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -312.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 205). Cancelled while BasicCegarLoop was constructing difference of abstraction (33507states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (69344 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 201.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 171.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2975 SDtfs, 24717 SDslu, 3797 SDs, 0 SdLazy, 59045 SolverSat, 7725 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4349 GetRequests, 4099 SyntacticMatches, 9 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5360 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33507occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.3s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9979911356693494 AbsIntWeakeningRatio, 0.07310344827586207 AbsIntAvgWeakeningVarsNumRemoved, 16.979310344827585 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 4998 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 4791 NumberOfCodeBlocks, 4791 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 6419 ConstructedInterpolants, 0 QuantifiedInterpolants, 12801557 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2302 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 4657/5226 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown