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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:27:04,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:27:04,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:27:04,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:27:04,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:27:04,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:27:04,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:27:04,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:27:04,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:27:04,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:27:05,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:27:05,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:27:05,003 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:27:05,004 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:27:05,007 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:27:05,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:27:05,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:27:05,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:27:05,022 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:27:05,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:27:05,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:27:05,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:27:05,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:27:05,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:27:05,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:27:05,033 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:27:05,034 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:27:05,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:27:05,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:27:05,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:27:05,037 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:27:05,037 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:27:05,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:27:05,038 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:27:05,039 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:27:05,040 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:27:05,041 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:27:05,070 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:27:05,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:27:05,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:27:05,072 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:27:05,072 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:27:05,072 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:27:05,073 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:27:05,074 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:27:05,074 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:27:05,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:27:05,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:27:05,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:27:05,077 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:27:05,078 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:27:05,078 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:27:05,078 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:27:05,078 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:27:05,078 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:27:05,079 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:27:05,079 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:27:05,079 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:27:05,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:27:05,080 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:27:05,080 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:27:05,080 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:27:05,080 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:27:05,080 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:27:05,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:27:05,081 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:27:05,081 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:27:05,081 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:27:05,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:27:05,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:27:05,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:27:05,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:27:05,172 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:27:05,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 08:27:05,244 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260099370/97cec7a947864160877274013ae47088/FLAGa14fd76ea [2018-11-07 08:27:05,845 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:27:05,846 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 08:27:05,872 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260099370/97cec7a947864160877274013ae47088/FLAGa14fd76ea [2018-11-07 08:27:05,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260099370/97cec7a947864160877274013ae47088 [2018-11-07 08:27:05,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:27:05,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:27:05,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:27:05,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:27:05,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:27:05,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:05" (1/1) ... [2018-11-07 08:27:05,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101bd247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:05, skipping insertion in model container [2018-11-07 08:27:05,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:05" (1/1) ... [2018-11-07 08:27:05,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:27:06,017 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:27:06,699 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:27:06,704 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:27:06,874 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:27:06,906 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:27:06,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06 WrapperNode [2018-11-07 08:27:06,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:27:06,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:27:06,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:27:06,908 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:27:06,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:27:07,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:27:07,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:27:07,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:27:07,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (1/1) ... [2018-11-07 08:27:07,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:27:07,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:27:07,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:27:07,208 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:27:07,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (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 08:27:07,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:27:07,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:27:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:27:07,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:27:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:27:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:27:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:27:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:27:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:27:12,831 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:27:12,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:12 BoogieIcfgContainer [2018-11-07 08:27:12,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:27:12,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:27:12,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:27:12,837 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:27:12,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:27:05" (1/3) ... [2018-11-07 08:27:12,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bef5e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:12, skipping insertion in model container [2018-11-07 08:27:12,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:06" (2/3) ... [2018-11-07 08:27:12,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bef5e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:12, skipping insertion in model container [2018-11-07 08:27:12,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:12" (3/3) ... [2018-11-07 08:27:12,842 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-11-07 08:27:12,853 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:27:12,863 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:27:12,880 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:27:12,921 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:27:12,922 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:27:12,922 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:27:12,922 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:27:12,922 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:27:12,922 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:27:12,923 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:27:12,923 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:27:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:27:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 08:27:12,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:12,965 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] [2018-11-07 08:27:12,968 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:12,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-11-07 08:27:12,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:13,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:13,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:13,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:13,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:13,520 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-11-07 08:27:13,548 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 08:27:13,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:13,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:27:13,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:13,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:27:13,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:27:13,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:27:13,582 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 08:27:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:17,323 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 08:27:17,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:27:17,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-07 08:27:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:17,351 INFO L225 Difference]: With dead ends: 985 [2018-11-07 08:27:17,352 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 08:27:17,363 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 08:27:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 08:27:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 08:27:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 08:27:17,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 08:27:17,463 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-11-07 08:27:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:17,464 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 08:27:17,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:27:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 08:27:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 08:27:17,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:17,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:17,473 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:17,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:17,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-11-07 08:27:17,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:17,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:17,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:17,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:17,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:18,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:18,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:27:18,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:18,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:27:18,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:27:18,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:27:18,089 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 08:27:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:22,908 INFO L93 Difference]: Finished difference Result 2339 states and 3734 transitions. [2018-11-07 08:27:22,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:27:22,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 08:27:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:22,920 INFO L225 Difference]: With dead ends: 2339 [2018-11-07 08:27:22,920 INFO L226 Difference]: Without dead ends: 1659 [2018-11-07 08:27:22,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:27:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-07 08:27:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-07 08:27:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-07 08:27:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2354 transitions. [2018-11-07 08:27:23,000 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2354 transitions. Word has length 131 [2018-11-07 08:27:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:23,001 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2354 transitions. [2018-11-07 08:27:23,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:27:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2354 transitions. [2018-11-07 08:27:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 08:27:23,007 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:23,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:23,008 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:23,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-11-07 08:27:23,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:23,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:23,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:23,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:23,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:23,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:23,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:27:23,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:23,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:27:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:27:23,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:27:23,296 INFO L87 Difference]: Start difference. First operand 1642 states and 2354 transitions. Second operand 4 states. [2018-11-07 08:27:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:26,187 INFO L93 Difference]: Finished difference Result 6013 states and 9018 transitions. [2018-11-07 08:27:26,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:27:26,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-11-07 08:27:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:26,224 INFO L225 Difference]: With dead ends: 6013 [2018-11-07 08:27:26,225 INFO L226 Difference]: Without dead ends: 4377 [2018-11-07 08:27:26,239 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 08:27:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-11-07 08:27:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-11-07 08:27:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-11-07 08:27:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6078 transitions. [2018-11-07 08:27:26,388 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6078 transitions. Word has length 182 [2018-11-07 08:27:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:26,388 INFO L480 AbstractCegarLoop]: Abstraction has 4354 states and 6078 transitions. [2018-11-07 08:27:26,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:27:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6078 transitions. [2018-11-07 08:27:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 08:27:26,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:26,402 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, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:27:26,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:26,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-11-07 08:27:26,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:26,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:26,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:26,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:26,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:27:26,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:26,701 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:26,702 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-07 08:27:26,704 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:27:26,754 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:26,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:27,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:27:27,664 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:27:27,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:27,707 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:27:28,445 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.55% of their original sizes. [2018-11-07 08:27:28,445 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:27:28,688 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-07 08:27:28,688 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:27:28,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:27:28,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:27:28,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:28,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:27:28,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:27:28,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:27:28,691 INFO L87 Difference]: Start difference. First operand 4354 states and 6078 transitions. Second operand 6 states. [2018-11-07 08:27:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:54,008 INFO L93 Difference]: Finished difference Result 8894 states and 12374 transitions. [2018-11-07 08:27:54,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:27:54,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 08:27:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:54,034 INFO L225 Difference]: With dead ends: 8894 [2018-11-07 08:27:54,034 INFO L226 Difference]: Without dead ends: 4546 [2018-11-07 08:27:54,052 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:27:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-11-07 08:27:54,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-11-07 08:27:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-11-07 08:27:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6278 transitions. [2018-11-07 08:27:54,164 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6278 transitions. Word has length 226 [2018-11-07 08:27:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:54,165 INFO L480 AbstractCegarLoop]: Abstraction has 4544 states and 6278 transitions. [2018-11-07 08:27:54,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:27:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6278 transitions. [2018-11-07 08:27:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-07 08:27:54,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:54,179 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:27:54,180 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:54,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-11-07 08:27:54,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:54,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:54,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:54,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:54,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 08:27:54,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:54,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:27:54,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:54,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:27:54,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:27:54,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:27:54,441 INFO L87 Difference]: Start difference. First operand 4544 states and 6278 transitions. Second operand 3 states. [2018-11-07 08:27:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:58,155 INFO L93 Difference]: Finished difference Result 10605 states and 15140 transitions. [2018-11-07 08:27:58,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:27:58,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-11-07 08:27:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:58,192 INFO L225 Difference]: With dead ends: 10605 [2018-11-07 08:27:58,192 INFO L226 Difference]: Without dead ends: 6257 [2018-11-07 08:27:58,222 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 08:27:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-11-07 08:27:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6257. [2018-11-07 08:27:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6257 states. [2018-11-07 08:27:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6257 states to 6257 states and 8403 transitions. [2018-11-07 08:27:58,366 INFO L78 Accepts]: Start accepts. Automaton has 6257 states and 8403 transitions. Word has length 320 [2018-11-07 08:27:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:58,366 INFO L480 AbstractCegarLoop]: Abstraction has 6257 states and 8403 transitions. [2018-11-07 08:27:58,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:27:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6257 states and 8403 transitions. [2018-11-07 08:27:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-07 08:27:58,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:58,385 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:58,385 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:58,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-11-07 08:27:58,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:58,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:58,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:58,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:58,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:27:58,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:58,817 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:58,818 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-07 08:27:58,819 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:27:58,825 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:58,825 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:59,410 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:27:59,410 INFO L272 AbstractInterpreter]: Visited 126 different actions 377 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:27:59,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:59,439 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:28:00,087 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-07 08:28:00,087 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:28:00,705 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-07 08:28:00,705 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:28:00,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:28:00,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 08:28:00,706 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:28:00,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 08:28:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 08:28:00,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:28:00,707 INFO L87 Difference]: Start difference. First operand 6257 states and 8403 transitions. Second operand 9 states. [2018-11-07 08:28:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:49,982 INFO L93 Difference]: Finished difference Result 15557 states and 21558 transitions. [2018-11-07 08:28:49,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 08:28:49,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 353 [2018-11-07 08:28:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:50,025 INFO L225 Difference]: With dead ends: 15557 [2018-11-07 08:28:50,025 INFO L226 Difference]: Without dead ends: 9496 [2018-11-07 08:28:50,050 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 359 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 08:28:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2018-11-07 08:28:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 9435. [2018-11-07 08:28:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9435 states. [2018-11-07 08:28:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9435 states to 9435 states and 12322 transitions. [2018-11-07 08:28:50,249 INFO L78 Accepts]: Start accepts. Automaton has 9435 states and 12322 transitions. Word has length 353 [2018-11-07 08:28:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:50,250 INFO L480 AbstractCegarLoop]: Abstraction has 9435 states and 12322 transitions. [2018-11-07 08:28:50,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 08:28:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 9435 states and 12322 transitions. [2018-11-07 08:28:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-11-07 08:28:50,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:50,274 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:28:50,274 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:50,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1324087715, now seen corresponding path program 1 times [2018-11-07 08:28:50,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:50,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:50,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:50,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:50,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:28:50,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:50,945 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:28:50,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 357 with the following transitions: [2018-11-07 08:28:50,946 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:28:50,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:28:50,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:28:51,625 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:28:51,626 INFO L272 AbstractInterpreter]: Visited 127 different actions 378 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:28:51,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:51,632 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:28:51,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:51,632 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 08:28:51,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:51,642 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:28:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:51,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:28:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:28:52,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:28:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:28:52,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:28:52,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 08:28:52,606 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:28:52,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:28:52,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:28:52,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:28:52,608 INFO L87 Difference]: Start difference. First operand 9435 states and 12322 transitions. Second operand 6 states. [2018-11-07 08:28:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:55,089 INFO L93 Difference]: Finished difference Result 18627 states and 24774 transitions. [2018-11-07 08:28:55,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:28:55,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 356 [2018-11-07 08:28:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:55,142 INFO L225 Difference]: With dead ends: 18627 [2018-11-07 08:28:55,142 INFO L226 Difference]: Without dead ends: 9387 [2018-11-07 08:28:55,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 713 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:28:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2018-11-07 08:28:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9100. [2018-11-07 08:28:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9100 states. [2018-11-07 08:28:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9100 states to 9100 states and 11476 transitions. [2018-11-07 08:28:55,412 INFO L78 Accepts]: Start accepts. Automaton has 9100 states and 11476 transitions. Word has length 356 [2018-11-07 08:28:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:55,413 INFO L480 AbstractCegarLoop]: Abstraction has 9100 states and 11476 transitions. [2018-11-07 08:28:55,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:28:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9100 states and 11476 transitions. [2018-11-07 08:28:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-07 08:28:55,443 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:55,443 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:28:55,444 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:55,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:55,444 INFO L82 PathProgramCache]: Analyzing trace with hash 695631289, now seen corresponding path program 1 times [2018-11-07 08:28:55,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:55,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:55,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:55,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:55,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 08:28:56,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:56,323 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:28:56,324 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 401 with the following transitions: [2018-11-07 08:28:56,324 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [633], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:28:56,336 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:28:56,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:28:57,578 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:28:57,578 INFO L272 AbstractInterpreter]: Visited 144 different actions 711 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:28:57,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:57,605 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:28:57,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:57,605 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 08:28:57,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:57,619 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:28:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:57,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:28:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 139 proven. 6 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-07 08:28:58,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:28:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 141 proven. 206 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-07 08:28:59,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:28:59,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-07 08:28:59,263 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:28:59,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 08:28:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 08:28:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-11-07 08:28:59,269 INFO L87 Difference]: Start difference. First operand 9100 states and 11476 transitions. Second operand 11 states. [2018-11-07 08:29:05,054 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 08:29:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:29:05,251 INFO L93 Difference]: Finished difference Result 25888 states and 33989 transitions. [2018-11-07 08:29:05,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 08:29:05,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 400 [2018-11-07 08:29:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:29:05,321 INFO L225 Difference]: With dead ends: 25888 [2018-11-07 08:29:05,321 INFO L226 Difference]: Without dead ends: 16983 [2018-11-07 08:29:05,349 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 800 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-11-07 08:29:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2018-11-07 08:29:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 15279. [2018-11-07 08:29:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15279 states. [2018-11-07 08:29:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15279 states to 15279 states and 19052 transitions. [2018-11-07 08:29:05,741 INFO L78 Accepts]: Start accepts. Automaton has 15279 states and 19052 transitions. Word has length 400 [2018-11-07 08:29:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:29:05,742 INFO L480 AbstractCegarLoop]: Abstraction has 15279 states and 19052 transitions. [2018-11-07 08:29:05,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 08:29:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 15279 states and 19052 transitions. [2018-11-07 08:29:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-11-07 08:29:05,791 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:29:05,791 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:29:05,791 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:29:05,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:05,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1976285809, now seen corresponding path program 1 times [2018-11-07 08:29:05,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:29:05,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:05,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:05,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:05,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:29:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 135 proven. 217 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 08:29:06,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:06,606 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:29:06,606 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 406 with the following transitions: [2018-11-07 08:29:06,606 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:29:06,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:29:06,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:29:07,171 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:29:07,171 INFO L272 AbstractInterpreter]: Visited 144 different actions 573 times. Merged at 8 different actions 34 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:29:07,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:07,199 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:29:07,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:07,199 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 08:29:07,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:07,217 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:29:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:07,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:29:09,206 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-11-07 08:29:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 307 proven. 107 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-07 08:29:09,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:29:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 240 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-07 08:29:09,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:29:09,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 12 [2018-11-07 08:29:09,950 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:29:09,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:29:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:29:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2018-11-07 08:29:09,951 INFO L87 Difference]: Start difference. First operand 15279 states and 19052 transitions. Second operand 10 states. [2018-11-07 08:29:10,358 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 08:30:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:30:50,341 INFO L93 Difference]: Finished difference Result 49415 states and 70271 transitions. [2018-11-07 08:30:50,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 08:30:50,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 405 [2018-11-07 08:30:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:30:50,568 INFO L225 Difference]: With dead ends: 49415 [2018-11-07 08:30:50,568 INFO L226 Difference]: Without dead ends: 34521 [2018-11-07 08:30:50,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 821 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=210, Invalid=589, Unknown=13, NotChecked=0, Total=812 [2018-11-07 08:30:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34521 states. [2018-11-07 08:30:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34521 to 32718. [2018-11-07 08:30:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32718 states. [2018-11-07 08:30:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32718 states to 32718 states and 42697 transitions. [2018-11-07 08:30:51,570 INFO L78 Accepts]: Start accepts. Automaton has 32718 states and 42697 transitions. Word has length 405 [2018-11-07 08:30:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:30:51,570 INFO L480 AbstractCegarLoop]: Abstraction has 32718 states and 42697 transitions. [2018-11-07 08:30:51,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:30:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 32718 states and 42697 transitions. [2018-11-07 08:30:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-11-07 08:30:51,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:30:51,750 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:30:51,751 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:30:51,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:30:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2096649763, now seen corresponding path program 1 times [2018-11-07 08:30:51,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:30:51,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:30:51,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:30:51,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:30:51,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:30:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:30:52,582 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 08:30:53,004 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-11-07 08:30:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 376 proven. 136 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 08:30:53,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:30:53,463 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:30:53,463 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 510 with the following transitions: [2018-11-07 08:30:53,463 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:30:53,467 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:30:53,467 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:30:57,647 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:30:57,648 INFO L272 AbstractInterpreter]: Visited 147 different actions 445 times. Merged at 9 different actions 30 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:30:57,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:30:57,654 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:30:57,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:30:57,654 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:30:57,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:30:57,664 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:30:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:30:57,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:30:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 645 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-11-07 08:30:58,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:30:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 393 proven. 112 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2018-11-07 08:30:59,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:30:59,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 08:30:59,498 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:30:59,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 08:30:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 08:30:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:30:59,500 INFO L87 Difference]: Start difference. First operand 32718 states and 42697 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 08:31:00,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:31:00,136 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:31:00,143 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:31:00,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:31:00 BoogieIcfgContainer [2018-11-07 08:31:00,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:31:00,144 INFO L168 Benchmark]: Toolchain (without parser) took 234237.40 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 08:31:00,148 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 08:31:00,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 998.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 08:31:00,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 168.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:31:00,150 INFO L168 Benchmark]: Boogie Preprocessor took 130.78 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:31:00,154 INFO L168 Benchmark]: RCFGBuilder took 5624.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 169.9 MB). Peak memory consumption was 169.9 MB. Max. memory is 7.1 GB. [2018-11-07 08:31:00,155 INFO L168 Benchmark]: TraceAbstraction took 227309.74 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -697.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 08:31:00,161 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 998.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 168.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.78 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5624.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 169.9 MB). Peak memory consumption was 169.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227309.74 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -697.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (32718states) and FLOYD_HOARE automaton (currently 6 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (123 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 227.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 200.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1959 SDtfs, 10475 SDslu, 1893 SDs, 0 SdLazy, 14514 SolverSat, 3509 SolverUnsat, 91 SolverUnknown, 0 SolverNotchecked, 168.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4050 GetRequests, 3929 SyntacticMatches, 13 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32718occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.9975996817338839 AbsIntWeakeningRatio, 0.10918544194107452 AbsIntAvgWeakeningVarsNumRemoved, 17.73310225303293 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 3897 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 4602 NumberOfCodeBlocks, 4602 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 6254 ConstructedInterpolants, 3 QuantifiedInterpolants, 8266486 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2713 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 6088/7059 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown