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/Problem13_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:21:19,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:21:19,463 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:21:19,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:21:19,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:21:19,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:21:19,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:21:19,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:21:19,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:21:19,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:21:19,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:21:19,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:21:19,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:21:19,498 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:21:19,499 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:21:19,507 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:21:19,508 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:21:19,512 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:21:19,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:21:19,518 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:21:19,519 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:21:19,520 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:21:19,522 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:21:19,528 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:21:19,528 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:21:19,529 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:21:19,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:21:19,530 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 [2018-10-24 18:21:19,545 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:21:19,545 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:21:19,546 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:21:19,547 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:21:19,548 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:21:19,548 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:21:19,548 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:21:19,548 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:21:19,549 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:21:19,549 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:21:19,549 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:21:19,549 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:21:19,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:21:19,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:21:19,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:21:19,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:21:19,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:21:19,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:21:19,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:21:19,552 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:21:19,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:21:19,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:21:19,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:21:19,554 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:21:19,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:21:19,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:21:19,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:21:19,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:21:19,555 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:21:19,555 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:21:19,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:21:19,555 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:21:19,556 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:21:19,556 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:21:19,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:21:19,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:21:19,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:21:19,623 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:21:19,624 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:21:19,624 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-24 18:21:19,698 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65e08a414/a842e8e36c544d4e8552dd54291e9003/FLAGb7428c251 [2018-10-24 18:21:20,451 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:21:20,452 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-24 18:21:20,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65e08a414/a842e8e36c544d4e8552dd54291e9003/FLAGb7428c251 [2018-10-24 18:21:20,500 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65e08a414/a842e8e36c544d4e8552dd54291e9003 [2018-10-24 18:21:20,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:21:20,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:21:20,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:20,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:21:20,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:21:20,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:20" (1/1) ... [2018-10-24 18:21:20,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116b2aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:20, skipping insertion in model container [2018-10-24 18:21:20,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:20" (1/1) ... [2018-10-24 18:21:20,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:21:20,702 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:21:22,096 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:22,101 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:21:22,887 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:22,926 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:21:22,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22 WrapperNode [2018-10-24 18:21:22,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:22,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:22,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:21:22,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:21:22,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:23,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:21:23,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:21:23,475 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:21:23,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (1/1) ... [2018-10-24 18:21:23,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:21:23,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:21:23,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:21:23,819 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:21:23,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (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 [2018-10-24 18:21:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:21:23,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:21:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:21:23,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:21:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:21:23,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:21:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:21:23,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:21:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:21:23,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:21:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:21:23,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:21:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:21:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:21:35,054 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:21:35,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:35 BoogieIcfgContainer [2018-10-24 18:21:35,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:21:35,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:21:35,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:21:35,059 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:21:35,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:21:20" (1/3) ... [2018-10-24 18:21:35,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4150bc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:35, skipping insertion in model container [2018-10-24 18:21:35,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:22" (2/3) ... [2018-10-24 18:21:35,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4150bc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:35, skipping insertion in model container [2018-10-24 18:21:35,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:35" (3/3) ... [2018-10-24 18:21:35,063 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07_false-unreach-call.c [2018-10-24 18:21:35,073 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:21:35,083 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:21:35,101 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:21:35,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:21:35,155 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:21:35,155 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:21:35,155 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:21:35,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:21:35,156 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:21:35,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:21:35,156 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:21:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:21:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 18:21:35,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:35,214 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] [2018-10-24 18:21:35,217 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:35,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:35,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1099869660, now seen corresponding path program 1 times [2018-10-24 18:21:35,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:35,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:35,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:35,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:35,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:35,695 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:21:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:35,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:35,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:21:35,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:35,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:21:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:21:35,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:21:35,826 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 18:21:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:45,191 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-10-24 18:21:45,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:21:45,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-10-24 18:21:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:45,229 INFO L225 Difference]: With dead ends: 3104 [2018-10-24 18:21:45,229 INFO L226 Difference]: Without dead ends: 1982 [2018-10-24 18:21:45,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:21:45,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-10-24 18:21:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-10-24 18:21:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-10-24 18:21:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-10-24 18:21:45,414 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 28 [2018-10-24 18:21:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:45,415 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-10-24 18:21:45,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:21:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-10-24 18:21:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:21:45,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:45,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:21:45,426 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:45,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1366067688, now seen corresponding path program 1 times [2018-10-24 18:21:45,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:45,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:45,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:45,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:45,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:45,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:45,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:21:45,850 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:45,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:21:45,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:21:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:21:45,853 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-10-24 18:22:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:00,736 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-10-24 18:22:00,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:00,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-24 18:22:00,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:00,769 INFO L225 Difference]: With dead ends: 5645 [2018-10-24 18:22:00,769 INFO L226 Difference]: Without dead ends: 3686 [2018-10-24 18:22:00,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:22:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-10-24 18:22:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-10-24 18:22:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-10-24 18:22:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5961 transitions. [2018-10-24 18:22:00,898 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5961 transitions. Word has length 98 [2018-10-24 18:22:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:00,899 INFO L481 AbstractCegarLoop]: Abstraction has 3654 states and 5961 transitions. [2018-10-24 18:22:00,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:22:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5961 transitions. [2018-10-24 18:22:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 18:22:00,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:00,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:00,907 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:00,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:00,908 INFO L82 PathProgramCache]: Analyzing trace with hash -230880332, now seen corresponding path program 1 times [2018-10-24 18:22:00,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:00,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:00,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:00,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:01,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:01,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:22:01,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:01,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:22:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:22:01,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:22:01,112 INFO L87 Difference]: Start difference. First operand 3654 states and 5961 transitions. Second operand 5 states. [2018-10-24 18:22:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:18,091 INFO L93 Difference]: Finished difference Result 10938 states and 18367 transitions. [2018-10-24 18:22:18,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:22:18,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-10-24 18:22:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:18,129 INFO L225 Difference]: With dead ends: 10938 [2018-10-24 18:22:18,129 INFO L226 Difference]: Without dead ends: 7290 [2018-10-24 18:22:18,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:22:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2018-10-24 18:22:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 7135. [2018-10-24 18:22:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7135 states. [2018-10-24 18:22:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 10864 transitions. [2018-10-24 18:22:18,341 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 10864 transitions. Word has length 100 [2018-10-24 18:22:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:18,342 INFO L481 AbstractCegarLoop]: Abstraction has 7135 states and 10864 transitions. [2018-10-24 18:22:18,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:22:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 10864 transitions. [2018-10-24 18:22:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 18:22:18,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:18,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:18,345 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:18,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1909063656, now seen corresponding path program 1 times [2018-10-24 18:22:18,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:18,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:18,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:18,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:18,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 18:22:18,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:18,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:22:18,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 123 with the following transitions: [2018-10-24 18:22:18,804 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2751], [2753], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:22:18,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:22:18,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:22:23,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:22:23,484 INFO L272 AbstractInterpreter]: Visited 98 different actions 98 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:22:23,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:23,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:22:26,044 INFO L232 lantSequenceWeakener]: Weakened 107 states. On average, predicates are now at 71.71% of their original sizes. [2018-10-24 18:22:26,044 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:22:27,836 INFO L413 sIntCurrentIteration]: We have 121 unified AI predicates [2018-10-24 18:22:27,836 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:22:27,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:22:27,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 18:22:27,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:27,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:22:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:22:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:22:27,839 INFO L87 Difference]: Start difference. First operand 7135 states and 10864 transitions. Second operand 10 states. [2018-10-24 18:23:09,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown