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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:44:34,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:44:34,981 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:44:34,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:44:34,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:44:34,995 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:44:34,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:44:35,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:44:35,003 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:44:35,004 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:44:35,005 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:44:35,005 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:44:35,007 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:44:35,008 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:44:35,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:44:35,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:44:35,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:44:35,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:44:35,024 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:44:35,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:44:35,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:44:35,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:44:35,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:44:35,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:44:35,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:44:35,032 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:44:35,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:44:35,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:44:35,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:44:35,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:44:35,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:44:35,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:44:35,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:44:35,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:44:35,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:44:35,039 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:44:35,039 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:44:35,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:44:35,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:44:35,056 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:44:35,056 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:44:35,056 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:44:35,056 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:44:35,056 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:44:35,057 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:44:35,057 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:44:35,057 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:44:35,057 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:44:35,057 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:44:35,058 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:44:35,058 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:44:35,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:44:35,059 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:44:35,060 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:44:35,060 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:44:35,060 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:44:35,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:44:35,061 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:44:35,061 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:44:35,061 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:44:35,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:44:35,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:44:35,062 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:44:35,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:44:35,062 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:44:35,063 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:44:35,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:44:35,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:44:35,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:44:35,140 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:44:35,140 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:44:35,141 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c [2018-11-07 02:44:35,208 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d9d761e/29fdc35538a849f4bd58bde11e0c000b/FLAG763321478 [2018-11-07 02:44:35,743 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:44:35,745 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c [2018-11-07 02:44:35,762 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d9d761e/29fdc35538a849f4bd58bde11e0c000b/FLAG763321478 [2018-11-07 02:44:35,777 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d9d761e/29fdc35538a849f4bd58bde11e0c000b [2018-11-07 02:44:35,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:44:35,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:44:35,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:44:35,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:44:35,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:44:35,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:44:35" (1/1) ... [2018-11-07 02:44:35,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f322134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:35, skipping insertion in model container [2018-11-07 02:44:35,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:44:35" (1/1) ... [2018-11-07 02:44:35,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:44:35,875 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:44:36,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:44:36,340 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:44:36,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:44:36,456 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:44:36,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36 WrapperNode [2018-11-07 02:44:36,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:44:36,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:44:36,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:44:36,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:44:36,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:44:36,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:44:36,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:44:36,591 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:44:36,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (1/1) ... [2018-11-07 02:44:36,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:44:36,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:44:36,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:44:36,679 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:44:36,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (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 02:44:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:44:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:44:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:44:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:44:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:44:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:44:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:44:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:44:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:44:39,869 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:44:39,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:44:39 BoogieIcfgContainer [2018-11-07 02:44:39,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:44:39,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:44:39,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:44:39,876 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:44:39,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:44:35" (1/3) ... [2018-11-07 02:44:39,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:44:39, skipping insertion in model container [2018-11-07 02:44:39,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:44:36" (2/3) ... [2018-11-07 02:44:39,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:44:39, skipping insertion in model container [2018-11-07 02:44:39,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:44:39" (3/3) ... [2018-11-07 02:44:39,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label19_true-unreach-call.c [2018-11-07 02:44:39,893 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:44:39,904 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:44:39,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:44:39,958 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:44:39,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:44:39,959 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:44:39,959 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:44:39,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:44:39,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:44:39,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:44:39,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:44:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:44:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 02:44:39,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:44:39,999 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] [2018-11-07 02:44:40,001 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:44:40,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:44:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash -354571332, now seen corresponding path program 1 times [2018-11-07 02:44:40,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:44:40,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:40,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:44:40,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:40,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:44:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:44:40,477 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:44:40,599 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 02:44:40,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:44:40,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:44:40,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:44:40,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:44:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:44:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:44:40,634 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:44:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:44:42,494 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:44:42,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:44:42,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-07 02:44:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:44:42,515 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:44:42,516 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:44:42,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:44:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:44:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:44:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:44:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:44:42,612 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 36 [2018-11-07 02:44:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:44:42,612 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:44:42,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:44:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:44:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 02:44:42,619 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:44:42,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:42,620 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:44:42,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:44:42,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1266355187, now seen corresponding path program 1 times [2018-11-07 02:44:42,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:44:42,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:42,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:44:42,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:42,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:44:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:44:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:44:42,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:44:42,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:44:42,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:44:42,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:44:42,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:44:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:44:42,941 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:44:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:44:45,597 INFO L93 Difference]: Finished difference Result 1287 states and 2312 transitions. [2018-11-07 02:44:45,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 02:44:45,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-07 02:44:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:44:45,608 INFO L225 Difference]: With dead ends: 1287 [2018-11-07 02:44:45,608 INFO L226 Difference]: Without dead ends: 937 [2018-11-07 02:44:45,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:44:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-11-07 02:44:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 924. [2018-11-07 02:44:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2018-11-07 02:44:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1441 transitions. [2018-11-07 02:44:45,673 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1441 transitions. Word has length 119 [2018-11-07 02:44:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:44:45,674 INFO L480 AbstractCegarLoop]: Abstraction has 924 states and 1441 transitions. [2018-11-07 02:44:45,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:44:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1441 transitions. [2018-11-07 02:44:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 02:44:45,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:44:45,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:45,681 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:44:45,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:44:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 585581779, now seen corresponding path program 1 times [2018-11-07 02:44:45,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:44:45,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:45,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:44:45,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:45,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:44:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:44:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:44:45,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:44:45,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:44:45,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:44:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:44:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:44:45,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:44:45,949 INFO L87 Difference]: Start difference. First operand 924 states and 1441 transitions. Second operand 6 states. [2018-11-07 02:44:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:44:49,905 INFO L93 Difference]: Finished difference Result 2533 states and 4079 transitions. [2018-11-07 02:44:49,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:44:49,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 02:44:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:44:49,921 INFO L225 Difference]: With dead ends: 2533 [2018-11-07 02:44:49,922 INFO L226 Difference]: Without dead ends: 1615 [2018-11-07 02:44:49,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:44:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2018-11-07 02:44:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1584. [2018-11-07 02:44:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2018-11-07 02:44:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2317 transitions. [2018-11-07 02:44:50,009 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2317 transitions. Word has length 135 [2018-11-07 02:44:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:44:50,009 INFO L480 AbstractCegarLoop]: Abstraction has 1584 states and 2317 transitions. [2018-11-07 02:44:50,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:44:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2317 transitions. [2018-11-07 02:44:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 02:44:50,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:44:50,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:50,019 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:44:50,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:44:50,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1699784157, now seen corresponding path program 1 times [2018-11-07 02:44:50,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:44:50,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:50,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:44:50,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:50,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:44:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:44:50,383 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:44:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:44:50,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:44:50,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:44:50,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:44:50,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:44:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:44:50,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:44:50,733 INFO L87 Difference]: Start difference. First operand 1584 states and 2317 transitions. Second operand 6 states. [2018-11-07 02:44:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:44:52,226 INFO L93 Difference]: Finished difference Result 3504 states and 5315 transitions. [2018-11-07 02:44:52,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:44:52,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-11-07 02:44:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:44:52,252 INFO L225 Difference]: With dead ends: 3504 [2018-11-07 02:44:52,252 INFO L226 Difference]: Without dead ends: 1926 [2018-11-07 02:44:52,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:44:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2018-11-07 02:44:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1887. [2018-11-07 02:44:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-11-07 02:44:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2680 transitions. [2018-11-07 02:44:52,330 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2680 transitions. Word has length 159 [2018-11-07 02:44:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:44:52,331 INFO L480 AbstractCegarLoop]: Abstraction has 1887 states and 2680 transitions. [2018-11-07 02:44:52,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:44:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2680 transitions. [2018-11-07 02:44:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 02:44:52,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:44:52,340 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:44:52,340 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:44:52,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:44:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1569874428, now seen corresponding path program 1 times [2018-11-07 02:44:52,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:44:52,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:52,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:44:52,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:44:52,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:44:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:44:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:44:52,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:44:52,917 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:44:52,919 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-11-07 02:44:52,923 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:44:53,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:44:53,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:44:55,625 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:45:09,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:45:09,304 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:45:09,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:09,318 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:45:12,579 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 74.01% of their original sizes. [2018-11-07 02:45:12,579 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:45:22,848 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-11-07 02:45:22,849 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:45:22,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:45:22,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 02:45:22,850 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:22,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 02:45:22,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 02:45:22,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 02:45:22,852 INFO L87 Difference]: Start difference. First operand 1887 states and 2680 transitions. Second operand 17 states. [2018-11-07 02:47:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:47:54,335 INFO L93 Difference]: Finished difference Result 4523 states and 6505 transitions. [2018-11-07 02:47:54,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 02:47:54,335 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2018-11-07 02:47:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:47:54,351 INFO L225 Difference]: With dead ends: 4523 [2018-11-07 02:47:54,351 INFO L226 Difference]: Without dead ends: 2642 [2018-11-07 02:47:54,361 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 197 GetRequests, 162 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-11-07 02:47:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2018-11-07 02:47:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2329. [2018-11-07 02:47:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2018-11-07 02:47:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3164 transitions. [2018-11-07 02:47:54,501 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3164 transitions. Word has length 190 [2018-11-07 02:47:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:47:54,502 INFO L480 AbstractCegarLoop]: Abstraction has 2329 states and 3164 transitions. [2018-11-07 02:47:54,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 02:47:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3164 transitions. [2018-11-07 02:47:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 02:47:54,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:47:54,508 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:47:54,508 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:47:54,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:47:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1084822497, now seen corresponding path program 1 times [2018-11-07 02:47:54,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:47:54,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:54,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:47:54,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:54,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:47:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:47:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:47:55,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:47:55,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:47:55,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 02:47:55,064 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:47:55,070 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:47:55,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:47:56,632 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:48:06,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:48:06,763 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:48:06,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:06,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:48:08,904 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 77.84% of their original sizes. [2018-11-07 02:48:08,904 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:48:29,829 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 02:48:29,829 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:48:29,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:48:29,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-07 02:48:29,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:48:29,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 02:48:29,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 02:48:29,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-11-07 02:48:29,831 INFO L87 Difference]: Start difference. First operand 2329 states and 3164 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 02:48:34,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 02:48:34,032 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:48:34,038 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:48:34,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:48:34 BoogieIcfgContainer [2018-11-07 02:48:34,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:48:34,039 INFO L168 Benchmark]: Toolchain (without parser) took 238252.60 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,040 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:48:34,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.56 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 133.06 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,042 INFO L168 Benchmark]: Boogie Preprocessor took 87.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,043 INFO L168 Benchmark]: RCFGBuilder took 3192.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,044 INFO L168 Benchmark]: TraceAbstraction took 234165.82 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -444.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 02:48:34,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.56 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 133.06 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3192.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234165.82 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -444.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (2329states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (22 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 234.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 165.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 552 SDtfs, 3935 SDslu, 447 SDs, 0 SdLazy, 5350 SolverSat, 1223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 434 GetRequests, 328 SyntacticMatches, 41 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2329occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9939051791933489 AbsIntWeakeningRatio, 0.1343669250645995 AbsIntAvgWeakeningVarsNumRemoved, 269.67700258397934 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 396 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 838 NumberOfCodeBlocks, 838 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 832 ConstructedInterpolants, 0 QuantifiedInterpolants, 922249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 350/354 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown