java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:19:37,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:19:37,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:19:37,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:19:37,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:19:38,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:19:38,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:19:38,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:19:38,005 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:19:38,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:19:38,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:19:38,008 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:19:38,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:19:38,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:19:38,011 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:19:38,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:19:38,012 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:19:38,015 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:19:38,017 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:19:38,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:19:38,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:19:38,025 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:19:38,032 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:19:38,032 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:19:38,033 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:19:38,034 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:19:38,038 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:19:38,039 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:19:38,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:19:38,045 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:19:38,046 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:19:38,046 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:19:38,048 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:19:38,049 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:19:38,050 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:19:38,051 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:19:38,051 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:19:38,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:19:38,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:19:38,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:19:38,089 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:19:38,089 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:19:38,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:19:38,089 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:19:38,090 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:19:38,090 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:19:38,090 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:19:38,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:19:38,090 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:19:38,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:19:38,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:19:38,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:19:38,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:19:38,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:19:38,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:19:38,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:19:38,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:19:38,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:19:38,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:19:38,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:19:38,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:19:38,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:19:38,096 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:19:38,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:19:38,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:19:38,097 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:19:38,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:19:38,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:19:38,097 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:19:38,098 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:19:38,098 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:19:38,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:19:38,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:19:38,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:19:38,189 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:19:38,189 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:19:38,190 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-10-27 02:19:38,254 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fef759d4/bec2a2a65c794de3bae3a395389c766b/FLAGc91250623 [2018-10-27 02:19:38,850 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:19:38,851 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-10-27 02:19:38,869 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fef759d4/bec2a2a65c794de3bae3a395389c766b/FLAGc91250623 [2018-10-27 02:19:38,882 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fef759d4/bec2a2a65c794de3bae3a395389c766b [2018-10-27 02:19:38,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:19:38,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:19:38,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:19:38,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:19:38,900 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:19:38,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:19:38" (1/1) ... [2018-10-27 02:19:38,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:38, skipping insertion in model container [2018-10-27 02:19:38,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:19:38" (1/1) ... [2018-10-27 02:19:38,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:19:38,975 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:19:39,418 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:19:39,423 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:19:39,547 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:19:39,570 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:19:39,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39 WrapperNode [2018-10-27 02:19:39,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:19:39,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:19:39,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:19:39,572 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:19:39,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:19:39,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:19:39,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:19:39,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:19:39,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... [2018-10-27 02:19:39,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:19:39,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:19:39,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:19:39,889 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:19:39,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 02:19:39,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:19:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:19:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:19:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:19:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:19:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:19:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:19:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:19:43,452 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:19:43,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:19:43 BoogieIcfgContainer [2018-10-27 02:19:43,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:19:43,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:19:43,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:19:43,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:19:43,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:19:38" (1/3) ... [2018-10-27 02:19:43,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:19:43, skipping insertion in model container [2018-10-27 02:19:43,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:39" (2/3) ... [2018-10-27 02:19:43,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:19:43, skipping insertion in model container [2018-10-27 02:19:43,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:19:43" (3/3) ... [2018-10-27 02:19:43,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label14_true-unreach-call.c [2018-10-27 02:19:43,480 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:19:43,490 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:19:43,509 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:19:43,551 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:19:43,552 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:19:43,552 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:19:43,552 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:19:43,552 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:19:43,553 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:19:43,553 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:19:43,553 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:19:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 02:19:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 02:19:43,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:19:43,590 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] [2018-10-27 02:19:43,593 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:19:43,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:19:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1440498332, now seen corresponding path program 1 times [2018-10-27 02:19:43,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:19:43,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:43,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:19:43,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:43,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:19:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:19:44,103 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:19:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:19:44,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:19:44,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:19:44,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:19:44,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:19:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:19:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:19:44,259 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 02:19:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:19:46,103 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 02:19:46,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:19:46,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-10-27 02:19:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:19:46,125 INFO L225 Difference]: With dead ends: 574 [2018-10-27 02:19:46,125 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 02:19:46,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:19:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 02:19:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 02:19:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 02:19:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-27 02:19:46,258 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 38 [2018-10-27 02:19:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:19:46,259 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-27 02:19:46,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:19:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-27 02:19:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 02:19:46,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:19:46,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:19:46,274 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:19:46,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:19:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 247043784, now seen corresponding path program 1 times [2018-10-27 02:19:46,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:19:46,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:46,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:19:46,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:46,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:19:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:19:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:19:46,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:19:46,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:19:46,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:19:46,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:19:46,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:19:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:19:46,780 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-27 02:19:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:19:49,798 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-27 02:19:49,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:19:49,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-27 02:19:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:19:49,810 INFO L225 Difference]: With dead ends: 1140 [2018-10-27 02:19:49,810 INFO L226 Difference]: Without dead ends: 790 [2018-10-27 02:19:49,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:19:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-27 02:19:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-27 02:19:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-27 02:19:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-27 02:19:49,870 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 158 [2018-10-27 02:19:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:19:49,871 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-27 02:19:49,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:19:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-27 02:19:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-27 02:19:49,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:19:49,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:19:49,885 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:19:49,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:19:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1650350691, now seen corresponding path program 1 times [2018-10-27 02:19:49,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:19:49,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:49,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:19:49,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:49,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:19:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:19:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:19:50,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:19:50,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:19:50,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:19:50,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:19:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:19:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:19:50,228 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-27 02:19:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:19:54,019 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-27 02:19:54,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:19:54,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-27 02:19:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:19:54,029 INFO L225 Difference]: With dead ends: 1975 [2018-10-27 02:19:54,029 INFO L226 Difference]: Without dead ends: 1197 [2018-10-27 02:19:54,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:19:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-27 02:19:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-27 02:19:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-27 02:19:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-27 02:19:54,078 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 165 [2018-10-27 02:19:54,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:19:54,079 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-27 02:19:54,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:19:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-27 02:19:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-27 02:19:54,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:19:54,085 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:19:54,085 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:19:54,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:19:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash -837763145, now seen corresponding path program 1 times [2018-10-27 02:19:54,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:19:54,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:54,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:19:54,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:19:54,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:19:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:19:54,577 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 02:19:54,779 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 02:19:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:19:55,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:19:55,238 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:19:55,239 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-27 02:19:55,241 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], [205], [207], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:19:55,313 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:19:55,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:19:57,358 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:20:10,907 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:20:10,909 INFO L272 AbstractInterpreter]: Visited 128 different actions 494 times. Merged at 5 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 02:20:10,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:20:10,955 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:20:14,033 INFO L227 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 75.22% of their original sizes. [2018-10-27 02:20:14,035 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:20:25,157 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-10-27 02:20:25,157 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:20:25,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:20:25,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-10-27 02:20:25,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:20:25,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 02:20:25,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 02:20:25,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-10-27 02:20:25,160 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 19 states. [2018-10-27 02:22:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:22:51,855 INFO L93 Difference]: Finished difference Result 2813 states and 4270 transitions. [2018-10-27 02:22:51,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-27 02:22:51,856 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 229 [2018-10-27 02:22:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:22:51,866 INFO L225 Difference]: With dead ends: 2813 [2018-10-27 02:22:51,866 INFO L226 Difference]: Without dead ends: 1642 [2018-10-27 02:22:51,871 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 200 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2018-10-27 02:22:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2018-10-27 02:22:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1619. [2018-10-27 02:22:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2018-10-27 02:22:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2225 transitions. [2018-10-27 02:22:51,984 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2225 transitions. Word has length 229 [2018-10-27 02:22:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:22:51,985 INFO L481 AbstractCegarLoop]: Abstraction has 1619 states and 2225 transitions. [2018-10-27 02:22:51,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 02:22:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2225 transitions. [2018-10-27 02:22:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-27 02:22:51,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:22:51,992 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:22:51,993 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:22:51,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:22:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 910411004, now seen corresponding path program 1 times [2018-10-27 02:22:51,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:22:51,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:22:51,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:22:51,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:22:51,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:22:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:22:52,291 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:22:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 02:22:52,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:22:52,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:22:52,520 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-27 02:22:52,520 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], [205], [207], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:22:52,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:22:52,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:22:54,075 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:23:13,927 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:23:13,928 INFO L272 AbstractInterpreter]: Visited 128 different actions 738 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. [2018-10-27 02:23:13,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:23:13,938 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:23:16,038 INFO L227 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 74.15% of their original sizes. [2018-10-27 02:23:16,039 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:23:40,514 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-10-27 02:23:40,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:23:40,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:23:40,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-10-27 02:23:40,515 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:23:40,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 02:23:40,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 02:23:40,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-27 02:23:40,517 INFO L87 Difference]: Start difference. First operand 1619 states and 2225 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 02:23:41,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:23:41,176 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:23:41,181 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:23:41,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:23:41 BoogieIcfgContainer [2018-10-27 02:23:41,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:23:41,183 INFO L168 Benchmark]: Toolchain (without parser) took 242289.18 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 02:23:41,184 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 02:23:41,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.85 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. [2018-10-27 02:23:41,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 213.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:23:41,187 INFO L168 Benchmark]: Boogie Preprocessor took 102.06 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. [2018-10-27 02:23:41,188 INFO L168 Benchmark]: RCFGBuilder took 3569.23 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: 128.7 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:23:41,188 INFO L168 Benchmark]: TraceAbstraction took 237721.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -912.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 02:23:41,193 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.85 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 213.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.06 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 3569.23 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: 128.7 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237721.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -912.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (1619states) and FLOYD_HOARE automaton (currently 4 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 237.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 156.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 461 SDtfs, 2848 SDslu, 564 SDs, 0 SdLazy, 4907 SolverSat, 916 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 502 GetRequests, 400 SyntacticMatches, 43 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 38.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 37.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949275362318839 AbsIntWeakeningRatio, 0.11182795698924732 AbsIntAvgWeakeningVarsNumRemoved, 528.6795698924731 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 828 NumberOfCodeBlocks, 828 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 823 ConstructedInterpolants, 0 QuantifiedInterpolants, 1135449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 329/337 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown